CARL F. w. MVESEBECK The Nearctic Species

of Orgilus Haliday

(Hymenoptera:

Braconidae)

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY • 1970 NUMBER 30
SERIAL PUBLICATIONS OF TH E SMITHSONIAN INSTITUTIO N

The emphasis upon publications as a means of diffusing knowledge was expressed

by the first Secretary of the Smithsonian Institution. In his formal plan for the Institution, Joseph Henry articulated a program that included the following statement:

"It is proposed to publish a series of reports, giving an account of the new discoveries

in science, and of the changes made from year to year in all branches of knowledge

not strictly professional." This keynote of basic research has been adhered to over the

years in the issuance of thousands of titles in serial publications under the Smithsonian

imprint, commencing with Smithsonian Contributions to Knowledge in 1848 and continuing

with the following active series:

Smithsonian Annals of Flight

Smithsonian Contributions to Anthropology

Smithsonian Contributions to Astrophysics

Smithsonian Contributions to Botany

Smithsonian Contributions to the Earth Sciences

Smithsonian Contributions to Paleobiology

Smithsonian Contributions to ^oology

Smithsonian Studies in History and Technology

In these series, the Institution publishes original articles and monographs dealing

with the research and collections of its several museums and offices and of professional

colleagues at other institutions of learning. These papers report newly acquired facts,

synoptic interpretations of data, or original theory in specialized fields. Each publication is distributed by mailing lists to libraries, laboratories, institutes, and interested

specialists throughout the world. Individual copies may be obtained from the Smithsonian Institution Press as long as stocks are available.

S. DILLON RIPLEY

Secretary

Smithsonian Institution
SMITHSONIAN CONTRIBUTIONS TO

ZOOLOGY

NUMBER 30

Carl F. w. Muesebeck Th e Nearctic Species

of Orgilus Haliday

(Hymenoptera:

Braconidae)

SMITHSONIAN INSTITUTION PRESS

CITY OF WASHINGTON

I97O
ABSTRACT

Muesebeck, Carl F. W. The Nearctic Species of Orgilus Haliday (Hymenoptera:

Braconidae). Smithsonian Contributions to Zoology, 30:1-104. 1970.—The species

of the braconid genus Orgilus are all internal parasites of lepidopterous larvae,

principally of the larvae of Microlepidoptera; some have been employed in the

biological control of troublesome pest species. The number of different kinds seems to

be very great. In the present paper 107 Nearctic species are treated, all except 16 of

these previously undescribed. Keys to the genera considered as comprising the subfamily Orgilinae and to the species of Orgilus recognized in the paper are followed

by detailed descriptions of the species.

Official publication date is handstamped in a limited number of initial copies and is recorded in

the Institution's annual report, Smithsonian Year.

UNITED STATES GOVERNMENT PRINTING OFFICE

WASHINGTON : 1970

For sale by the Superintendent of Documents, U.S. Government Printing Office

Washington, D.C. 20402 - Price $1.25. (paper cover)
Carl F. W. Muesebeck The Nearctic Species

of Orgilus Haliday

(Hymenoptera:

Braconidae)

Introduction

The species of the braconid genus Orgilus Haliday are

internal parasites of lepidopterous larvae. Some of

them appear to be of importance in the control of serious insect pests. Orgilus obscurator (Nees) was introduced from Europe into Canada and the United States

about forty years ago to assist in the control of the

European pine-shoot moth, Rhyacionia buoliana

(Schiffermuller); and a little later O. longiceps Muesebeck was imported from Japan and released in widely

separated areas of the United States where its host, the

oriental fruit moth, Grapholitha molesta (Busck), was

destructive. Very recently another species, O. lepidus

Muesebeck, was brought into California from South

America in the hope that it might become of some importance as a control agent of the potato tuberworm,

Phthorimaea operculella (Zeller). It has also been introduced into India and Australia. For the great majority of the species treated in this paper, however, the

hosts are not yet known, although they may be presumed to be mostly, if not entirely, Microlepidoptera.

Apparently the Nearctic species are very numerous.

The number considered in this paper is 107, of which

only 16 were previously described; but I have left untreated a considerable residue of specimens comprising

many different species. The vast majority of these species are represented by only single specimens, many of

them males and some more or less damaged and not

suitable for description. They are not identifiable as

any of the species discussed in the paper and are

presumed to represent further undescribed forms. AcCar/ F. W. Muesebeck, Department of Entomology, Smithsonian Institution, Washington, D.C. 20560.

cordingly, it is quite evident that the present study can

be considered only a preliminary treatment of the

group, extension of which will need to await accumulation of more material, particularly reared series. It

seems likely that eventually several hundred Nearctic

species of Orgilus will be known.

Foerster (1862, p. 246) included Orgilus in what

we now know as the Agathidinae, and until recently

he has been followed in this by most European authors,

including Marshall (1885, p. 277), Dalla Torre (1898,

p. 127), Szepligeti (1904, p. 119), Morley (1907, p.

219), Enderlein (1920, p. 162), Lyle (1920, p. 178),

and Telenga (1933, p. 245); although as early as 1865

Reinhard (1865, p. 261) had questioned the correctness of the placement of Orgilus in the Agathidinae,

principally because of the difference in the number of

segments in the maxillary palpi (5 in Agathidinae and

6 in Orgilus) and in certain details of wing venation.

He suggested that Orgilus seemed related to Macrocentrus Curtis.

Enderlein (1905, p. 449) proposed the subfamily

name Mimagathidinae for his new genus Mimagathis

and Stantonia Ashmead, 1904; and Szepligeti (1908,

p. 426) also gave this little group subfamily rank but

incorrectly suppressed Mimagathis as a synonym of

Microtypus Ratzeburg, 1848, and used the subfamily

name Microtypinae. Mimagathis is actually a synonym

of Stantonia—n. syn. Although Enderlein later (1920,

p. 162) still included Orgilus in the Agathidinae he

recognized its relationship with Mimagathis and Stantonia and indicated in a footnote that he considered

these three to constitute the tribe Mimagathidini in the

subfamily Agathidinae.

1
2 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Meanwhile Ashmead (1900, p. 122) had placed tonia and Eubadizon (in part). Tobias (1965) disOrgilus in the subfamily Blacinae and had proposed posed of the Blacinae by transferring Blacus Nees,

for it the tribal name Orgilini, under which he in- 1818, and its relatives to the Euphorinae, and in his

eluded also two new genera, Oresimus and Origilomor- critical paper on the classification of the Braconidae

pha (both now considered synonyms of Orgilus) and (1967) he used the subfamily name Microtypinae for

Hymenochaonia Dalla Torre, 1898, which clearly does Orgilus, Microtypus, Stantonia, and what he called

not belong in the Blacinae but appears to be a macro- Eubadizon, although he placed the type-species of

centrine. Although Lyle (1920-1921), as indicated Eubadizon in the Calyptinae under the genus Calyptus

above, included Orgilus in his treatment of the Aga- Haliday, 1835. In 1957 (Muesebeck, p. 51) I did not

thidinae, he expressed some doubt concerning the cor- believe there was justification for such a breakdown of

rectness of this placement and stated (1921, p. 7) that Eubadizon and for the recognition of Calyptus, and

he was inclined to agree with Ashmead. Recent Ameri- after further study I am still of that opinion. Moreover,

can authors—Martin (1956, p. 9) and Muesebeck and I find it difficult to agree with Tobias in the assignment

Walkley (1951, p. Ill)—kept Orgilus in the Blacinae, of Blacus to the Euphorinae, and for the present, at

while Granger (1949, p. 334) treated it as a distinct least, I consider Blacus and its close relatives as consubfamily, Orgilinae, and Hellen (1958, p. 34) gave stituting a distinct subfamily. However, I am prepared

it tribal rank (Orgilini) in his broad subfamily Hel- to recognize Orgilus, Stantonia, Microtypus, and

coninae. Eubadizon Nees, 1834, was placed by Hellen Eubadizon as comprising another subfamily closely rein the Blacini, also treated as a tribe of the Helconinae. lated to the Blacinae, from which it is distinguished by

Other recent workers, including Fahringer (1937), having the first brachial cell closed at the apex; and

Watanabe (1937), and Tobias (1967), have recog- since a supergeneric name based on Orgilus antedates

nized the subfamily Microtypinae for Orgilus and any such name based on Microtypus, I prefer to use

Microtypus and in some cases have included also Stan- the name Orgilinae for this subfamily.

Genera of the Subfamily Orgilinae

1. Second cubital cell small, triangular, and closed outwardly by the second intercubitus, which

may be weak but is at least indicated 2

Second cubital cell open; no indication of the second intercubitus 3

2. Anellan cell of hind wing extremely short, less than one-third as long as mediellan cell;

nervellus strongly inclivous, meeting mediella in a sharply acute angle. .Stantonia Ashmead

Anellan cell large, at least half as long as mediellan cell; nervellus meeting mediella in

virtually a right angle Microtypus Ratzeburg

3. Mesopleuron with the longitudinal furrow distinct, usually sharply impressed and foveolate;

second abscissa of radius straight; inner calcarium of hind tibia nearly always half as long

as metatarsus Orgilus Haliday

Mesopleuron without a longitudinal furrow; second abscissa of radius arched

downward at base; inner calcarium of hind tibia much less than half as long

as metatarsus Eubadizon Nees

Acknowledgments

For the loan of unworked material I am indebted to

the University of Arizona, University of California,

Museum of Comparative Zoology, Cornell University,

University of Wisconsin, and particularly to Dr. W. R.

M. Mason, of the Entomology Research Institute,

Canada Department of Agriculture, who supplied long

series of some forms tfiat helped greatly in the development of an understariding of the extent of intraspecific variability. My sincere thanks are also given

to Mrs. Elsie H. Froeschner, of the Department of

Entomology, who prepared all the illustrations.

Genus Orgilus Haliday

Orgilus Haliday, 1833, p. 262. [Type-species: Microdus obscurator Nees. By monotypy.]

Ischius Wesmael, 1837, p. 20. [Type-species: Microdus

obscurator Nees. Designated by Muesebeck and Walkley,

1951, p. 111.]

Macro palpus Ratzeburg, 1844, p. 56. [Type-species: Eubadizon leptocephalus Hartig. By monotypy.]

Oresimus Ashmead, 1900, p. 123. [Type-species: Eubadizon

maculiventris Cresson. By monotypy.]

Orgiomorpha Ashmead, 1900, p. 123. [Type-species: Ganychorus gelechiae Ashmead. By monotypy.]

Ischiolus Hellen, 1958, p. 34 (as subgenus of Orgilus.) [Typespecies : Microgaster rugosus Nees. By monotypy.]
NUMBER 30

In length, exclusive of the ovipositor, Orgilus normally

ranges between 2.5 and 5 mm, very rarely exceeding

these limits. The head is variable in shape, sometimes

very strongly transverse with the face flat and the temples narrow and sharply receding, but in other species

long anteroposteriorly with the face strongly protuberant and the temples not at all receding; in front view

the head varies from nearly circular to subquadrate, or

to narrowly subtriangular, even subrostriform in certain species. The malar space may be only one-sixth as

long as the eye height or more than half as long; and

there is also wide variation in the relative width of

the face and of the temples and in the relative size of

the ocelli, also in the extent and nature of the sculpture

of the face, cheeks, temples, and vertex. The occipital

carina is sometimes complete and very rarely entirely

absent, but usually it is strong at the sides and more

or less broadly interrupted at the middle. The maxillary palpi are 6-segmented, the labial palpi 4-segmented. In the majority of the species treated in this

paper the number of antenna! segments falls within a

range of 28 to 34, but in a considerable number of

forms the number is outside these limits; rarely, however (in occasional specimens of macrurus, new

species), have I counted as many as 44 segments or

(in capsicola, new species and persimilis, new species)

as few as 23.

Usually the thorax is moderately stout but occasionally it is slender; the notauli are always present, usually

strongly foveolate but sometimes weakly or indistinctly

so. The propodeum is usually rather strongly declivous,

very rarely nearly horizontal, and nearly always more or

less sculptured (from granulose to coarsely rugose).

The longitudinal furrow of the mesopleuron is nearly

always foveolate, but rarely weakly indicated in species

in which there is no vestige of the third abscissa of

cubitus in the forewing. The prepectus is always carinately margined. The hind coxa is usually half as long

as the hind femur, sometimes longer, and the latter may

be from 3 to 6 times as long as broad; the inner calcarium of the hind tibia is always longer than the outer

one and is usually at least half as long as the metatarsus;

and the tarsal claws are variable, usually simple but

sometimes provided with a subbasal tooth or angulation. In the forewing the stigma is usually rather narrow and the radial cell on the wing margin most often

is about as long as the stigma but sometimes noticeably

longer although very rarely going nearly to the wing

apex; the first discoidal cell is always sessile; the third

abscissa of cubitus is most frequently represented by a

stub that is at least as long as the second abscissa, but in

one group of species this stub is reduced to little more

than a punctiform spur and in another group it is entirely absent; the first brachial cell is always closed, the

subdiscoideus originating very low on the outer end of

the cell. In the hind wing the submediellan cell is at

least half as long as the mediellan cell; the wing itself

varies considerably in form, being sometimes very narrow but more often relatively broad.

The abdomen is sessile, although the first segment

narrows gradually toward the base, and the spiracles

of the first segment are far before the middle. The

suture between the first and second tergites is sometimes sharply impressed though fine but often it is only

weakly or faintly indicated. The ovipositor is always

prominent, the sheath ranging in length from shorter

than the abdomen to more than twice as long as the

head, thorax and abdomen combined. Very rarely the

abdomen is entirely smooth and polished; usually it

is more or less extensively granulose, rugulose or striate,

especially toward the base.

The genus may be readily divided into three species

groups on the basis of the extent to which the stub

or spur of the third abscissa of cubitus is developed. The

group in which this part of the cubitus is represented

only by a more or less punctiform spur and the group

in which not a vestige of such a spur remains are both

small, each containing comparatively few species. Most

of the known species have a well-developed stub of a

third abscissa of cubitus that is at least as long as the

second abscissa. There is considerable intraspecific variation and specific identification is often difficult.

Among the more stable and reliable characters are the

shape of the head, the relative length of the malar

space, the number of antennal segments, the character

and extent of the sculpture on the cheeks, propodeum,

metapleura, hind coxae and abdomen, the relative

length and width of the hind wing, and the relative

length of the lower abscissa of basella, also the relative

length and width of the hind femora and the relative

length of the ovipositor sheath. The following key will

facilitate the identification of the species covered in this

paper.
SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Key to the Known Nearctic Species of Orgilus

1. Cubitus entirely effaced beyond intercubitus or represented there by a very short spur that

is usually punctiform and rarely one-third as long as second abscissa of cubitus 2

Cubitus beyond intercubitus represented by a stub that is at least as long as

second abscissa 22

2. Third abscissa of cubitus represented by a very short, more or less punctiform spur;

mesopleura usually smooth and shiny 3

Not even a vestige of third abscissa of cubitus remaining; mesopleura finely granulose or

coriaceous and more or less mat 17

3. Ocellocular line not, or barely, longer than diameter of an ocellus 4

Ocellocular line much longer than diameter of an ocellus 6

4. Occipital carina entirely effaced immarginatus, new species

Occipital carina present laterally 5

5. Temples finely granulose; propodeum and metapleura uniformly coriaceous and more or

less mat; middle lobe of mesoscutum long and narrow and extending far beyond middle

of scutum disparilis, new species

Temples largely smooth; propodeum and metapleura smooth and shiny; middle

lobe of mesoscutum short and broad, extending only slightly beyond middle

of scutum imitator, new species

6. Occipital carina broadly interrupted medially; hind tibia without a pale annulus

at base; ovipositor sheath at least twice as long as head, thorax, and abdomen

combined macrurus, new species

Occipital carina not or indistinctly interrupted medially; hind tibia with a pale annulus at

extreme base; ovipositor sheath not so long 7

7. Abdomen unusually narrow, the first tergite fully twice as long as wide at

apex, the second longer than broad and parallel-sided; antennae 36-40-

segmented maculiventris (Cresson)

Abdomen not so narrow, the first tergite not nearly twice as long as wide at apex, the

second usually wider than long; antennae usually 23- to 34-segmented 8

8. Hind coxae and metapleura smooth and shiny, sometimes punctate but not shagreened

or alutaceous 9

Hind coxae, and usually the metapleura, finely shagreened or alutaceous 12

9. Thorax yellow, the propodeum sometimes more or less darkened; abdomen largely yellow,

darkened only on the basal tergites infrequent, new species

Thorax extensively marked with black, sometimes entirely black; abdomen largely black,

always black apically 10

10. Dorsal keels of first tergite very weak and short, not distinct beyond spiracles; thorax and

abdomen black; hind coxae black on basal half discrepant, new species

Dorsal keels of first tergite well developed to the middle of the tergite; thorax and abdomen

usually with ferruginous markings; hind coxae yellow, rarely a little darkened at

extreme bases 11

11. Metapleuron and outer side of hind coxa minutely but distinctly punctate; mesoscutum

closely, finely punctate even along the posterior margin; antennae 30- to 33-segmented;

ovipositor sheath as long as the body melissopi, new species

Metapleuron and outer side of hind coxa virtually impunctate; mesoscutum smooth,

polished, and impunctate along posterior margin; antennae 27-segmented in the single

known specimen; ovipositor sheath as long as distance from base of scutellum to end

of abdomen lautus, new species

12. Antennae normally 22- to 25-segmented; tarsal claw simple; radial cell not or barely

longer than stigma 13

Antennae normally 27- to 32-segmented; tarsal claw with a subbasal tooth or angulation;

radial cell conspicuously longer than stigma 14

13. Head and thorax black; wings whitish hyaline; hind coxae darkened, at least

basally persimilis, new species

Head and thorax yellow, sometimes varied with black; wings hyaline but not whitish;

hind coxae entirely yellow capsicola, new species
NUMBER 30

Key to the Known Nearctic Species of Orgilus—Continued

14. First tergite only slightly longer than wide at apex, the dorsal keek prominent and extending

to apical third of tergite; distance between lateral ocelli shorter than the diameter of one

of them; ovipositor sheath one and one-half times as long as head, thorax, and abdomen

combined proprius, new species

First tergite usually relatively longer and the keels weak and short; distance between

lateral ocelli a little longer than the diameter of one of them; ovipositor sheath at most

only barely longer than head, thorax and abdomen combined 15

15. Second tergite about as long as broad, parallel-sided; tergites 1 to 5 of female and 1 to 6 of

male completely finely rugulose punctate or granulose; hind femur four times as long as

wide; hind wing five times as long as its maximum width walleyi, new species

Second tergite broader at base than long and usually widening caudad; abdomen not so

completely sculptured; at least not combining all the above characters 16

16. Third and following tergites smooth and polished, the first and second coriaceous and shiny;

tarsal claw with a subbasal angulation but without a subbasal tooth or lobe; palpi

dark ~. lepidus Muesebeck

Abdomen more coarsely and extensively sculptured; tarsal claw with a subbasal tooth or

lobe, palpi usually pale yellow lateraUs (Cresson)

17. Abdomen slender; second tergite longer than wide; ovipositor sheath longer than head,

thorax, and abdomen combined 18

Abdomen not slender; second tergite decidedly wider than long; ovipositor sheath not

longer than abdomen 19

18. Occiput immargined; inner calcarium of hind tibia not nearly half as long as metatarsus;

thorax black; antenna of female without a pale annulus tenuis, new species

Occiput weakly but distinctly margined at the sides; inner calcarium of hind tibia fully

half as long as metatarsus; thorax testaceous; antenna of female with a conspicuous

white annulus notabilis, new species

19. Head in front view subtriangular, strongly narrowed below; anterior tentorial pits below

level of lower eye margins; occiput immargined absonus, new species

Head in front view round, not narrowed below; anterior tentorial pits at or above level of

lower eye margins; occiput margined 20

20. Tarsal claw with a well-developed subbasal tooth momphae, new species

Tarsal claw without a distinct subbasal tooth 21

21. Temples less than half as wide as eyes; hind wing not nearly five times as long

as broad; lower abscissa of basella not more, usually less, than half as long as

mediella coleophorae, new species

Temples more than half as wide as eyes; hind wing more than five times as long as wide;

lower abscissa of basella more than half as long as mediella gelechiae (Ashmead)

22. Head rostriform 23

Head not rostriform 24

23. Wings uniformly rather strongly infumated; malar space 0.6 as long as eye

height rostratus, new species

Wings hyaline basally, subhyaline apically; malar space hardly half as long as eye

height dreisbachi, new species

24. Tergites 1 to 6 completely sculptured, the basal ones rugose, the apical ones usually

granulose or granulose punctate; hind femur less than 3.5 times as long as broad; second

tergite about twice as broad at base as long 25

Abdomen not so completely sculptured; hind femur and second tergite relatively longer.. .26

25. Wings rather strongly infumated; apex of abdomen brownish to reddish yellow; hind

femora usually testaceous or brownish scaber, new species

Wings clear hyaline; abdomen completely black; hind femora black.... hyalinus, new species

26. Face strongly protruding and not wider, usually narrower, than eye height; cheeks shiny,

not granulose or shagreened; head usually 0.75 as long as wide, in dorsal view, and

strongly excavated behind; ocellocular line less than twice as long as diameter of

an ocellus 27

Face convex but not so strongly protruding; at least not combining the

above characters 35
SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Key to the Known Nearctic Species of Orgilus—Continued

27. All coxae and trochanters black; hind coxa rugulose above and on outer side 28

Coxae and trochanters yellowish or brownish yellow, the hind coxa sometimes blackish

basally; hind coxa largely smooth or finely shagreened on outer side 29

28. Face rather evenly covered with large, separated punctures; cheeks flaring, not convex;

lower abscissa of basella not longer than nervellus; first tergite more than 1.5 times as

long as wide at apex buccalus, new species

Face rugulose, at least on upper part; cheeks strongly convex; lower abscissa of basella

much longer than nervellus; first tergite not nearly 1.5 times as long as broad at

apex obscurator (Nees)

29. Head, and also thorax and abdomen largely, testaceous or brownish yellow comptanae, new species

Head and thorax black; abdomen sometimes more or less reddish yellow 30

30. Metapleuron and outer side of hind coxa granulose or coriaceous and rather mat; tegulae

usually yellow 31

Metapleuron and outer side of hind coxa shiny and largely smooth, not granulose or

coriaceous; tegulae usually dark 33

31. Lower temples rounded and receding; mesonotal lobes more or less shagreened and somewhat dull intermedius, new species

Lower temples not receding; mesonotal lobes not shagreened, very shiny 32

32. Abdomen black above, piceous below; hind tibiae entirely darkened fictus, new species

Abdomen more or less testaceous on second and third tergites; basal sternites yellow; hind

tibiae darkened apically and very narrowly basally cinctus, new species

33. Second tergite apically and the third entirely smooth and polished 34

Second tergite entirely and the third in part rugulose longiceps Muesebeck

34. Face and clypeus closely, strongly punctate; middle lobe of mesoscutum with irregular,

shallow punctures; first tergite closely rugulose fulgens, new species

Face and clypeus only faintly punctate; middle lobe of mesoscutum impunctate; first

tergite smooth except for a little weak rugulosity laterally lissus, new species

35. First and second tergites largely or entirely, the third at least in part, and sometimes the

fourth, sculptured; suture between second and third tergites always sharply impressed. .36

Third and following tergites smooth and polished, the second usually in large part, and

sometimes entirely, smooth; suture between second and third tergites variable, often very

weak or even faint 53

36. Hind wing very narrow, five times as long as broad; lower abscissa of basella half as long

as maximum width of hind wing 37

Hind wing relatively broad, conspicuously less than five times as long as broad; lower

abscissa of basella less than half as long as maximum width of hind wing 45

37. Reddish yellow gelechiaevorus Cushman

Black, sometimes more or less varied with reddish yellow 38

38. Tegulae and wing bases dark 39

Tegulae and wing bases yellow or yellowish 41

39. Legs black; thorax largely granulose and dull; ovipositor sheath decidedly longer than

abdomen arcticus, new species

Legs largely testaceous; thorax smooth and shiny; ovipositor sheath not longer

than abdomen 40

40. Very slender; second tergite at least as long as broad at base; the basal three tergites

ferruginous; cheeks smooth and polished ejuncidus, new species

Not slender; second tergite much broader at base than long; abdomen black; cheeks

shagreened and subopaque insularis, new species

41. Head, including vertex, frons and temples, entirely granulose and dull, opacus, new species

At least the temples largely smooth and polished 42

42. Temples as wide as eyes; head and second and third tergites in female more or less

testaceous zonalis, new species

Temples not as wide as eyes; head and dorsum of abdomen black, at most with reddish

spots laterally at apices of first and second tergites 43
NUMBER 30

Key to the Known Nearctic Species of Orgilus—Continued

43. Forewings contrastingly hyaline basally and infumated apically; ovipositor sheath not or

barely longer than abdomen; none of the flagellar segments of the female antennae wider

than long indagator Muesebeck

Forewings rather uniformly weakly infumated; ovipositor sheath noticeably longer than the

abdomen; some of the preapical segments of the female antennae wider than long 44

44. Mesoscutum smooth and shiny, with only fine setigerous punctures; mesopleuron smooth

and shiny cuneatus (Provancher)

Mesoscutum, especially the middle lobe, finely granulose or shagreened and

mat; mesopleuron coriaceous, especially below the longitudinal furrow, and

mat consuetus, new species

45. Tergites 1 to 4 closely sculptured agrestis, new species

Fourth tergite smooth and polished 46

46. First and second tergites longitudinally aciculate; legs black in both

sexes... .*. anthracinus, new species

First and second tergites not aciculate; legs largely brownish yellow, at least in the

female 47

47. Wings clear hyaline; tegulae and wing bases black or blackish ferus, new species

Wings at least somewhat smoky apically 48

48. Head ferruginous; female antennae with about 35 segments invictus, new species

Head black; female antennae usually 30- to 32-segmented 49

49. Malar space clearly more than half as long as eye height; abdomen with reddish

spots in apical corners of tergites 1 and 2; metapleuron largely shagreened and

dull calijornicus (Provancher)

Malar space not more than half as long as eye height; abdomen entirely black; metapleuron

not shagreened 50

50. Metapleuron and outer side of hind coxa largely smooth and shining 51

Metapleuron and outer side of hind coxa largely rugulose 52

51. Tegulae black; propodeum with a short, prominent, median longitudinal keel at

base cristatus, new species

Tegulae yellow; propodeum without such a keel lunaris, new species

52. First tergite completely rugulose, even at base; nervulus postfurcal by more than one-third

its length; ovipositor sheath barely as long as abdomen frigidus, new species

First tergite smooth and polished at base; nervulus virtually interstitial; ovipositor sheath

at least as long as propodeum and abdomen combined fallax, new species

53. Metapleuron finely granulose or shagreened and mat, at least on upper half; hind coxa

finely granulose and dull on the entire outer side; ovipositor sheath never as long

as the body 54

Metapleuron usually very shiny and not granulose; at least not the above combination

of characters 60

54. Head and thorax largely testaceous inopinus, new species

Head and thorax black 55

55. Tegulae and wing bases, all coxae and trochanters, and the femora largely,

black glacialis, new species

Tegulae and wing bases yellow; legs largely yellowish 56

56. Hind wing five times as long as wide; lower abscissa of basella usually half as long as

maximum width of hind wing 57

Hind wing not nearly five times as long as wide; lower abscissa of basella relatively

shorter 59

57. Abdomen testaceous except at apex; malar space more than half as long as eye

height tersus, new species

Abdomen black; malar space less than half as long as eye height 58

58. Second tergite punctate on basal half; hind coxae yellow gracilis (Brues)

Second tergite smooth and shiny; hind coxae largely black citus, new species

59. Abdomen noticeably narrower than thorax; second tergite parallel-sided and as

long as broad at base; mesoscutum and mesopleuron largely smooth and

shiny dissidens, new species

Abdomen about as broad as thorax; second tergite broadening caudad and broader at base

than long; mesoscutum and mesopleuron extensively sculptured dolosus, new species
SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Key to the Known Nearctic Species of Orgilus—Continued

60. Hind coxae unusually large, at least 0.65 as long as hind femora, usually smooth and shiny

and always completely bright testaceous; inner calcarium of hind tibia less than half as

long as metatarsus; malar space shorter than longest segment of maxillary palpus;

ovipositor sheath fully as long as head, thorax and abdomen combined 61

Hind coxae not as above; otherwise, not that combination of characters 64

61. Abdomen completely smooth and polished, with no suggestion of sculpture even on the

first and second tergites 62

At least the first tergite more or less rugulose 63

62. Hind wing at least five times as long as wide; wings rather strongly infumated; hind femur

less than four times as long as wide levis, new species

Hind wing not so narrow; wings almost hyaline; hind femur relatively

longer politus, new species

63. Hind coxae smooth and polished; cheeks largely smooth and shining, shagreened and mat

only near the lower margins; temples 0.85 as wide as eyes and only slightly receding;

abdomen completely black alacer, new species

Hind coxae somewhat shagreened above basally on outer side; cheeks completely strongly

shagreened and dull; temples narrower and more strongly receding; first and second

tergites with reddish markings in their apical corners simulator, new species

64. All coxae and trochanters black; clypeus entirely black; nervulus usually postfurcal by at

least one-third its length 65

At least fore- and middle coxae testaceous or brownish yellow, very rarely all coxae black

in the males of certain species; clypeus usually reddish yellow anteriorly; nervulus

variable 70

65. Propodeum smooth and polished apically and with no stubs of longitudinal carinae arising

from the posterior margin dioryctriae, Gahan

Propodeum rugulose apically and with stubs of longitudinal carinae setting off a median

apical area and also lateral areas 66

66. Malar space more than half as long as eye height; hind femur more than five times as long

as wide cor acinus, new species

Malar space not more, usually less, than half as long as eye height; hind femur less than

five times as long as wide 67

67. Second tergite smooth and polished 68

Second tergite rugulose or confluently punctate on basal half 69

68. Malar space less than 0.4 as long as eye height; all coxae and trochanters, and the femora

more or less, black or blackish in both sexes balsameae, new species

Malar space longer; coxae and trochanters blackish only in male, grapholithae, new species

69. Hind wing very narrow, more than five times as long as its maximum width;

antennae of holotype 34-segmented, none of the preapical segments broader than

long morulus, new species

Hind wing only about four times as long as its maximum width; antennae 30-segmented in

holotype, some of the preapical segments broader than long utahensis, new species

70. Head and, or, thorax more or less testaceous or ferruginous 71

Head and thorax black 75

71. Temples noticeably wider than the eyes and with scattered, distinct punctures; antennae

36- to 38-segmented coloradensis, new species

Temples not wider than eyes and without distinct, separate punctures; antennae with

fewer segments 72

72. Abdomen entirely black medicaginis, new species

Abdomen more or less testaceous or ferruginous 73

73. First tergite fully 1.5 times as long as broad at apex, its width at apex less than the distance

from apex to the spiracles; head largely black; ovipositor sheath a little longer than head,

thorax, and abdomen combined; length 3.5 to 4 mm parallelus, new species

First tergite much stouter; head entirely testaceous; ovipositor sheath shorter than the body;

length less than 3 mm 74

74. Cheeks smooth and shiny except at lower margins; malar space more than half as long as

eye height; forewing whitish hyaline basally and contrastingly infumated apically;

ovipositor sheath only slightly longer than abdomen cerinus, new species
NUMBER 30

Key to the Known Nearctic Species of Orgilus—Continued

Cheeks shagreened and mat; malar space less than half as long as eye height; forewings

uniformly a little smoky; ovipositor sheath about as long as thorax and abdomen

combined pumilus, new species

75. Second tergite conspicuously wider (1.2-1.5 times) at base than long; first tergite usually

at least 0.8 as wide at apex as long; tegulae black or blackish (except usually

in modicus) 76

Second tergite relatively narrower, usually with length and basal width subequal; first

tergite not so stout; tegulae sometimes black or blackish but more often pale 87

76. Cheeks largely smooth and polished, only narrowly shagreened near lower margins 77

Cheeks shagreened or granulose and more or less dull 81

77. First tergite fully as broad at apex as long; ovipositor sheath about as long as distance from

base of scutellum to end of abdomen gramineus, new species

First tergite not so short and broad; ovipositor sheath about as long as abdomen 78

78. Face about 1.25 times as wide as eye height and malar space nearly or quite half as long as

eye height; forewing clear hyaline at base and noticeably infumated beyond median

cell cognatus, new species

Face not or barely wider than eye height and malar space not more than 0.4 as long as eye

height; forewings hyaline, subhyaline or weakly infumated 79

79. Deep black, including clypeus, mandibles, antennae, tegulae and wing bases and the

abdomen both above and below; hind coxae largely blackish; female antennae

stout, most of the segments beyond the 15th conspicuously broader than long

.compactus, new species

Not so dark; abdomen more or less suffused with brown; female antennae more slender... 80

80. Antennae 26- to 28-segmented; metapleuron virtually smooth in upper anterior angle;

hind wing about five times as long as wide; tegulae usually yellow; ovipositor sheath as

long as distance from base of scutellum to end of abdomen modicus, new species

Antennae normally 30- to 32-segmented; metapleuron finely rugulose or confluently punctate

in upper anterior angle; hind wing much less than five times as long as wide; tegulae

blackish; ovipositor sheath about as long as abdomen mellipes (Say)

81. Face not or barely wider than eye height; malar space less than half as long as eye height;

hind femur less than twice as long as hind coxa and not more than 4.5 times as long

as wide 82

Face at least 1.2 times as wide as eye height; malar space half as long as eye height; hind

femur twice as long as hind coxa and five times as long as wide 84

82. Disc of scutellum flat; all coxae, trochanters, and femora uniformly brownish yellow;

abdomen suffused with brown clivicola, new species

Disc of scutellum convex; hind coxae and all trochanters and femora with blackish

markings 83

83. Face shagreened and dull except narrowly down the middle; malar space not longer

than clypeus and hardly 0.4 as long as eye height; ovipositor sheath not quite as long

as abdomen solidus, new species

Face very shiny, with scattered hair punctures; malar space longer than clypeus and 0.45

as long as eye height; ovipositor sheath as long as propodeum and abdomen

combined delectus Provancher

84. Clypeus, antennal scapes, and abdomen completely black; mesopleuron smooth below the

longitudinal furrow; ovipositor sheath about as long as abdomen 85

Clypeus and antennal scapes more or less reddish yellow; abdomen with rufous markings

in apical corners of first and second tergites; mesopleuron somewhat rugulose punctate

below the longitudinal furrow; ovipositor sheath as long as propodeum and abdomen

combined 86

85. Second tergite completely smooth and polished; temples nearly as wide as eyes and hardly

receding oregonensis, new species

Second tergite more or less rugulose punctate on basal half; temples 0.75 as wide as eyes

and distinctly somewhat receding impiger, new species

86. Metapleuron smooth and shiny on upper anterior part; frons transversely striate; second

tergite weakly punctate medially on basal third erythropus, new species

Metapleuron completely rugulose; frons irregularly rugulose; second tergite smooth and

shining validus, new species
10 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Key to the Known Nearctic Species of Orgilus—Continued

87. Hind femora unusually slender, about six times as long as wide 88

Hind femora not nearly six times as long as wide 90

88. Metapleuron largely rugulose; face conspicuously wider than eye height; second tergite fully

as long as broad at base; tegulae yellow 89

Metapleuron largely smooth and shiny; face hardly wider than eye height; second tergite a

little broader at base than long; tegulae black exilis, new species

89. Ovipositor sheath as long as head, thorax, and abdomen combined; antennal scape yellow;

wings virtually hyaline, the veins of the hind wing not at all pigmented

femoralis, new species

Ovipositor sheath considerably shorter than the body; antennal scape blackish; wings

distinctly infumated, the veins of the hind wing pigmented ablusus, new species

90. Temples wider than eyes and with numerous sharp punctures coloradensh, new species

Temples not as above 91

91. Metapleuron almost entirely rugulose though more weakly so in anterior upper angle; face

at least 1.2 times as broad as eye height; ovipositor sheath never as long as the body 92

Metapleuron rugulose at lower posterior margin but nearly always largely smooth and

shining; if not so then face is barely wider than eye height and ovipositor sheath is

longer than the body 96

92. First tergite closely and finely striate; second tergite rather extensively, though finely,

rugulose aciculate striatus, new species

First tergite largely rugulose, sometimes more or less longitudinally so 93

93. Forewings hyaline basally, somewhat infumated on apical half; venter of abdomen black

or piceous 95

Forewings a little infumated even basally; basal abdominal sternites normally yellowish.. .94

94. Mcsoscutum densely and sharply punctate on middle lobe; the lateral lobes more sparsely

but distinctly punctate; mesopleuron extensively punctate below the longitudinal furrow;

face closely, finely rugulose and somewhat mat boharti, new species

Mesoscutum smooth and shiny, not distinctly punctate; at least not combining the above

characters detectiformis Viereck

95. Stubs of the carinae that arise from the posterior margin of the propodeum prominent and

long, setting off apical areas that are open in front; hind femur five times as long as wide;

dorsal keek of first tergite distinct to beyond the spiracles medicaginis, new species

Stubs of the carinae at apex of propodeum weak, only the two median ones distinct and

these short; hind femur less than five times as long as wide; keels of first tergite not

developed vallis, new species

96. Abdomen, including first tergite, smooth and polished; all coxae entirely yellow; tegulae

and wing bases pale yellow; ovipositor sheath longer than head, thorax, and abdomen

combined rasilis, new species

First tergite closely sculptured; at least not combining all the above characters 97

97. First tergite longitudinally striate 98

First tergite rugulose 100

98. Second tergite largely finely longitudinally rugulose aciculate 99

Second tergite smooth and polished except for a small rugulose area each side of the middle

at base strigosus, new species

99. Cheeks largely smooth and polished; abdomen entirely black monticola, new species

Cheeks shagreened and rather dull; abdomen with ferruginous markings and brownish

shading mundus, new species

100. Tegulae and wing bases black or blackish 101

Tegulae and wing bases yellow or brownish yellow 103

101. Head conspicuously wider than thorax; temples 0.75 as wide as eyes; ovipositor sheath as

long as distance from scutellum to end of abdomen grapholithae, new species

Head not or barely wider than thorax; temples a little narrower; ovipositor sheath much

longer than head, thorax, and abdomen combined 102

102. Hind wing more than five times as long as wide; cheeks almost entirely smooth and shiny;

wings a little infumated fisheri, new species

Hind wing not nearly five times as long as wide; cheeks shagreened and subopaque; wings

hyaline prolixus, new species
NUMBER 30 11

Key to the Known Nearctic Species of Orgilus—Continued

103. Abdomen largely, or at least on second and third tergites, reddish yellow 104

Abdomen black 105

104. Hind coxae finely shagreened at bases above; hind wing five times as long as wide;

face about 1.3 times as wide as eye height; malar space fully half as long as

eye height elasmopalpi, new species

Hind coxae rugulose at bases above; hind wing not five times as long as wide; face narrower;

malar space less than half as long as eye height pedalis, new species

105. Wings hyaline nit id us, new species

Wings distinctly a little infumated 106

106. Hind coxa granulose and dull over most of the outer side; hind wing about five times as

long as wide; lower abscissa of basella more than half as long as mediella or maximum

width of hind wing 108

Hind coxa not granulose but largely smooth on outer side; hind wing not so narrow; lower

abscissa of basella relatively much shorter 107

107. Lower part of face very smooth and shiny; clypeus virtually impuctatc; temples rather

strongly rounded; second tergite fully as long as wide at base pratensis, new species

Lower part of face closely punctate; clypeus punctate; temples rather flat; second tergite a

little wider at base than long mimicus, new species

108. Hind coxae reddish yellow, a little darkened at bases; mesonotal lobes with no suggestion of

alutaceous sculpturing; posterior furrow of mesopleuron very coarsely foveate, with

about 10 foveae burksi, new species

Hind coxae black; mesonotal lobes weakly alutaceous posteriorly; posterior furrow of

mesopleuron not so coarsely foveate confiictanae, new species

Orgilus ablusus, new species

This is one of three species treated in this paper with

unusually slender hind femora; in this character it resembles femoralis, new species, and exilis, new species,

from both of which it may be readily distinguished as

shown in the key.

FEMALE.—Length 3.8 mm. Head distinctly wider

than thorax, in dorsal view 1.7 times as wide as

long; face in holotype 1.8 times as wide as eye height,

minutely punctate and in large part shiny, but along

the eye margins the surface is shagreened and somewhat mat; clypeus shiny, with well-separated minute

punctures; malar space just about half as long as eye

height, shagreened and mat; cheeks also shagreened

and mat; temples hardly 0.75 as wide as eyes, polished

along eye margins but broadly shagreened and mat

along occipital margin and below; occipital carina

rather broadly interrupted medially; vertex smooth

and shiny; ocellocular line about 3 times, postocellar

line more than twice, as long as diameter of an ocellus;

antennae of holotype 31-segmented, even the shortest

flagellar segments at least as long as broad.

Thorax rather slender; mesoscutum shiny, the

lateral lobes impunctate and polished, the median lobe

with very shallow, rather closely placed punctures that

fade out on the posterior part of the lobe; notauli

sharply impressed, finely foveolate, disc of scutellum

slightly convex, smooth and polished, impunctate;

propodeum largely rugulose but with a small triangular

polished area each side of the middle at base, the open

apical areas rather distinctly set off by well-developed

stubs of longitudinal carinae; side of pronotum rugulose and shiny except for a small area at anterior margin that is very finely granulose and dull; mesopleuron

smooth and polished, the longitudinal furrow a little

sinuate and evenly finely foveolate; metapleuron rugulose except for a small smooth area in the upper

anterior angle. Hind coxa very weakly rugulose on

dorsal edge at base, otherwise finely granulose above

and on upper part of outer side; hind femur fully

twice as long as hind coxa and very nearly or quite

six times as long as wide; inner calcarium of hind tibia

more than half as long as metatarsus; tarsal claws

simple. Stigma about as long as radial cell on wing

margin; nervulus just postfurcal; hind wing 4.3 times

as long as wide; lower abscissa of basella about as long

as nervellus and about one-third as long as mediella or

maximum width of hind wing.

Abdomen slender, narrower than thorax; first tergite more than 1.5 times as long as wide at apex, the

spiracles a little more than twice as far from apex as

from base and the distance between them only slightly

more than their distance from base, the tergite closely

rugulose, longitudinally so laterally; second tergite as
12

long as wide at base, parallel-sided, smooth and

polished except for a very small area basally each side

of middle which is faintly rugulose punctate; second

suture faint; remainder of dorsum of abdomen smooth

and polished; ovipositor sheath fully as long as propodeum and abdomen combined.

Black; lower part of clypeus and the mandibles ferruginous; antennal scape blackish, the flagellum reddish yellow on basal half and becoming gradually

darker beyond middle, nearly black at apex; legs ferruginous, the hind coxa somewhat darkened on lower

edge and on basal part of upper edge, each of the

femora with a blackish streak on inner side above;

hind tibiae slightly darkened at apices and all tarsi

darkened; tegulae and wing bases yellow; wings distinctly infumated, the radiella and cubitella of hind

wings clearly somewhat pigmented.

MALE.—Unknown.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Known only from a single female

collected at Chatterton, Ontario, 25 August 1948, by

J. C. Martin.

Orgilus absonus, new species

FIGURES 6, 6a, 66, 20, 52

In general appearance this species is very similar to

rostratus, new species, and dreisbachi, new species,

which it resembles in head shape, in the very short

maxillary palpi, in the stout abdomen with a very short

and broad second tergite, in the unusually short and

broad hind femora and in the short ovipositor. It differs

significantly from those species, however, in lacking

even a vestige of the third abscissa of cubitus and in its

virtually immargined occiput.

FEMALE.—Length about 3 mm. Head not wider

than thorax, in dorsal view about twice as broad as

long and in front view narrowly triangular; eyes very

large; face about 0.8 as wide as eye height, shallowly

punctate and with an indistinct and incomplete median

longitudinal keel; clypeus not distinctly separated from

face; malar space hardly one-third as long as eye

height, finely alutaceous and shiny; temples smooth,

not more than half as wide as eyes; head rather strongly

excavated behind; occiput smooth, not carinately margined except very weakly below on the sides; antennae

shorter than the body, 24- to 26-segmented in the availSMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

able specimens, some of the preapical segments fully

as broad as long, and the apical segment with a short

terminal spicule; maxillary palpi very short, barely as

long as eye height.

Thorax compact; mesoscutum rather uniformly covered with closely placed, minute and very shallow

punctures; notauli sharply impressed, minutely foveolate; disc of scutellum large and rather flat, sculptured

like mesoscutum; propodeum finely granulose laterally,

a little rugulose medially; side of pronotum, mesopleuron and metapleuron shagreened; longitudinal furrow of mesopleuron weak or even indistinct, usually

indicated by an incomplete row of very shallow punctures. Hind coxa shiny, nearly smooth; hind femur

barely more than three times as long as broad; longer

calcarium of hind tibia not quite half as long as metatarsus; tarsal claw slender, without a subbasal tooth

but weakly angulate beyond middle. Radial cell on

wing margin just about as long as stigma; second

abscissa of radius slightly arched and not quite on a

line with intercubitus; not even a vestige of third

abscissa of cubitus present; nervulus just postfurcal;

hind wing slightly less than five times as long as wide;

lower abscissa of basella much longer than nervellus

and nearly or quite half as long as mediella.

Abdomen short and stout; first tergite about as broad

at apex as long, entirely minutely confluently punctate,

the dorsal keels not developed; second tergite about

twice as wide at base as long, finely granulose or

minutely confluently punctate like the first; third and

following tergites sculptured like the second but successively more weakly so; ovipositor sheath about as

long as abdomen.

Brown; head black or blackish; antennae black;

palpi pale; tegulae and wing bases testaceous; wings

hyaline; lateral lobes of mesoscutum and the pleura

sometimes darkened basally; legs brown, hind tibiae

apically and all tarsi darkened.

MALE.—Essentially like the female, but the antennae

are more slender and as long as the body, and the

thorax is much darker, usually concolorous with the

head.

HOLOTYPE.—USNM 70138.

DISTRIBUTION.—Known only from the type-series,

consisting of 13 females (one the holotype) and 3 males

collected by P. H. Timberlake at Mill Creek, San

Bernardino Mts., California, at 6000 feet, on

Eriogonum.
NUMBER 30 13

Orgilus agrestis, new species

This species differs from related forms especially in

having the first four tergites closely sculptured and the

following largely retracted.

FEMALE.—Length about 4 mm. Head slightly

broader than thorax, in dorsal view two-thirds as long

as wide; face about 1.4 times as broad as eye height,

punctate below, finely rugulose medially above, shagreened laterally; clypeus shiny, punctate; malar space

distinctly more than half as long as eye height, minutely granulose and dull; cheeks sculptured like malar

space; temples receding gradually from eye margins

and at mideye point about as wide as eyes, granulose or

shagreened behind, smooth and shiny along eye margins; occipital carina narrowly interrupted medially;

frons smooth medially, granulose and mat laterally;

ocellocular line more than twice as long as diameter of

an ocellus; antennae 33- or 34-segmented in the available specimens, even the shortest segments in apical

fourth of flagellum a little longer than broad.

Mesoscutum with some very shallow punctures,

which are most noticeable on the middle lobe; notauli

foveolate, meeting in a small rugulose area; propodeum

gently convex, finely rugulose but with a small smooth

and polished area each side at base, the stubs of the

longitudinal carinae that arise from the posterior margin not distinct; side of pronotum largely rugulose

punctate; mesopleuron smooth and polished, with the

longitudinal furrow foveolate; metapleuron rugulose

posteriorly, irregularly punctate anteriorly. Hind coxa

barely more than half as long as hind femur and largely

finely rugulose; hind femur about five times as long as

broad; longer calcarium of hind tibia just about half

as long as metatarsus; tarsal claws simple. Radial cell

on wing margin hardly as long as stigma; second abscissa of radius on a line with intercubitus; stub of

third abscissa of cubitus as long as the second abscissa;

nervulus a little postfurcal; hind wing a little less than

five times as long as wide; lower abscissa of basella

longer than nervellus but not half as long as mediella

or maximum width of hind wing.

Abdomen as wide as thorax; first tergite about 1.2

times as long as wide at apex, finely rugulose punctate,

the dorsal keels not developed; second tergite a little

broader at base than long, the third strongly transverse,

and both closely confluently punctate or very finely rugulose punctate, the third smooth and polished along

its posterior margin; fourth tergite largely confluently

punctate but more weakly so than second and third,

smooth apically; the following almost completely retracted, only a little of the fifth tergite being visible;

second suture sharply impressed and relatively broad;

ovipositor sheath barely as long as abdomen.

Head and thorax black; clypeus largely and mandibles red; antennae light brown, blackish apically; palpi

dark; tegulae black, wing bases brownish yellow; wings

hyaline at bases, noticeably smoky on apical two-thirds;

legs yellowish brown, the hind coxae basally, the trochanters in part, all femora inwardly more or less, hind

tibiae and all tarsi, somewhat darkened; abdomen

reddish brown to black, always black apically.

MALE.—Unknown.

HOLOTYPE.—USNM 70139.

DISTRIBUTION.—Known only from the holotype

female collected 12 miles southeast of Bend, Oregon,

on Artemisia tridentata, 19 July 1957, by Gerald F.

Craft, and a female paratype taken by W. R. M.

Mason at Drumheller, Alberta, 14 June 1946.

Orgilus alacer, new species

This species very closely resembles politus, new species,

from which it differs, however, in the presence of some

sculpture on the first and second tergites of the abdomen, and in the more strongly sculptured propodeum, darker wings, and relatively shorter lower abscissa of basella.

FEMALE.—Length about 5 mm. Head barely wider

than thorax and about 0.6 as long as wide in dorsal

view; face only slightly wider than eye height (in ratio

of 75:70), very shiny, and finely punctate, the punctures for the most part about a puncture width apart;

malar space shagreened and rather dull, about 0.4 as

long as eye height, longer than clypeus but slightly

shorter than longest segment of maxillary palpus; only

lower part of cheeks shagreened and rather mat; temples about 0.85 as wide as eyes, smooth and shiny, occipital carina only narrowly interrupted medially; frons

and vertex smooth and shiny; ocellocular line hardly

twice as long as diameter of an ocellus; antennae of

holotype 37-segmented, a few of the preapical flagellar

segments about as broad as long.

Mesoscutum very shiny, with only some minute and

shallow setigerous punctures; notauli deep and fine,

finely foveolate and meeting in a strongly rugulose and

narrowly triangular area just before apex of scutum;

disc of scutellum very shiny, rather flat; prescutellar

sulcus deep but weakly foveolate; propodeum entirely
14

rugulose except for a small smooth and polished area

each side at extreme base, the stubs of the longitudinal

carinae that arise from the posterior margin very short

and rather weak; side of pronotum largely finely rugulose and shiny; mesopleuron smooth and polished except for a small area below tegula which is rugulose,

the longitudinal furrow a little sinuate and completely,

strongly foveolate; metapleuron shiny, closely and shallowly punctate, rugulose at the lower posterior margin. Hind coxa smooth and shiny, 0.65 as long as hind

femur, which is 4.5 times as long as wide; inner calcariura of hind tibia clearly less than half as long as

metatarsus; tarsal claws simple. Radial cell on wing

margin as long as stigma; second abscissa of radius

on a line with intercubitus; stub of third abscissa of

cubitus longer than second abscissa; nervulus postfurcal by about one-third of its length; hind wing very

nearly five times as long as wide; lower abscissa of

basella not longer than nervellus and much less than

half as long as mediella.

Abdomen as long as head and thorax combined; first

tergite about 1.3 times as long as broad at apex, the

spiracles more than twice as far from apex as from base,

the dorsal keels not developed, the surface of the tergite smooth at base and at apex and very narrowly

along the middle, but longitudinally rugulose laterally;

second tergite about as long as broad at base, smooth

and shiny except for a small confluently punctate area

each side of middle at base; remainder of the abdomen

smooth and polished; ovipositor sheath a little longer

than head, thorax, and abdomen combined.

Deep black; clypeus, palpi and antennae all entirely

black; tegulae black, wing bases piceous; wings distinctly somewhat infumated; all coxae, trochanters,

and femora yellow, the forefemora a little darkened on

the upper edges and the hind femora at extreme apices;

middle and hind tibiae a little darkened toward apices,

and all tarsi dark; abdomen black above and below.

MALE.—None included in the type material.

HOLOTYPE.—USNM 70140.

DISTRIBUTION.—Described from the holotype female

collected in Boulder Canyon, Colorado, at 7800 feet,

8 August 1960, by R. and K. Dreisbach. The United

States National Museum has a male from Custer

County, Nebraska, collected by R. R. Dreisbach, 21

August 1951, which I believe to be the same species.

It appears to agree in all essential respects. The antennae are 38-segmented.

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Orgilus anthracinus, new species

FIGURE 42

The closely aciculate first and second tergites, coupled

with the intensely black color of the entire insect, including the legs, distinguish this species.

FEMALE.—Length about 3.5 mm. Head not wider

than thorax, in dorsal view about 1.7 times as wide

as long; face rather strongly convex, only slightly (1.1

times) wider than eye height, finely granulose with a

little rugulosity each side of the middle, rather dull

laterally, shiny medially, clypeus shiny, largely finely

punctate, separated from the face by a sharply impressed line; anterior tentorial pits large and deep;

malar space granulose and mat, about half as long

as eye height; cheeks and lower temples finely granulose and mat, upper temples smooth and shiny; temples

as seen from above somewhat rounded and only slightly

receding, at mideye point nearly as wide as eyes;

antennae of holotype 28-segmented (29-segmented in

the only female paratype with complete antennae), segments 18-27 about as broad as long.

Mesoscutum shiny, and with numerous shallow,

setigerous punctures; notauli sharply impressed and

finely foveolate; disc of scutellum shiny, with shallow

setigerous punctures; propodeum completely strongly

rugulose except at extreme base, and without distinct

spurs of longitudinal carinae arising from the posterior

margin, the apical areas, therefore, not clearly defined;

lateral face of pronotum largely rugulose, smooth along

upper margin; mesopleuron largely smooth and polished, but with a broad, partly foveolate, partly rugulose longitudinal furrow; metapleuron shiny, nearly

smooth anteriorly, rugulose posteriorly and below. Hind

coxa largely granulose but a little longitudinally rugulose on upper edge toward base, nearly smooth below

on outer side; hind femur slender, about five times as

long as wide and twice as long as hind coxa;

inner calcarium of hind tibia slightly more than half

as long as metatarsus; tarsal claw simple. Radial cell

on wing margin barely as long as stigma; second abscissa of radius and intercubitus virtually on a straight

line; stub of third abscissa of cubitus as long as the

second abscissa; nervulus very slightly postfurcal; hind

wing about four times as long as wide; lower abscissa

of basella usually less than half as long as mediella

and less than half as long as maximum width of

hind wing.

Abdomen very shiny; first tergite little longer than

its apical width, the two dorsal keels very weak and
NUMBER 30 15

short; first and second tergites closely longitudinally

aciculate; second tergite nearly as long as wide at

base; third tergite largely or entirely smooth and polished, but usually with a little very weak longitudinal

sculpture at the middle; ovipositor sheath barely longer

than abdomen.

Deep black; tibiae and tarsi sometimes dark piceous;

tegulae and wing bases black; wings uniformly weakly

infumated.

MALE.—Essentially like the female. However, the

malar space is relatively shorter; the antennae of the

males examined are 28- to 30-segmented with even the

shortest flagellar segments decidedly longer than broad;

the face is usually more weakly sculptured and more

shiny than in the three known females; the second

tergite is often only very weakly aciculate and the third

is usually entirely smooth.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—The type-series, which comprises

all the known material, consists of 2 females (one the

holotype) and 36 males taken at Payne Bay, Quebec,

in July and August 1958; 1 female and 2 males from

Sugluk, Quebec; 1 male from Eskimo Point, and 2

males from Chesterfield, Northwest Territories; and

1 male from Chilcat Pass, British Columbia, altitude

3500 feet.

Orgilus arcticus, new species

In habitus this species resembles invictus, new species,

also from Labrador, but it is much darker and much

more extensively sculptured.

FEMALE.—Length about 4 mm. Head in dorsal

view about twice as broad as long and a little wider

than the thorax; face about 1.2 times as broad as eye

height and closely punctate; clypeus strongly convex

and closely, finely punctate, and sharply set off from the

face by a deep furrow; malar space longer than clypeus

but hardly half as long as eye height, finely granulose

and dull; cheeks also finely granulose and dull; temples

about three-fourths as wide as eyes, shagreened and

dull; frons laterally and the vertex entirely granulose

and dull; ocellocular line just about twice as long as

diameter of an ocellus; antennae of holotype 31-segmented, a few of the segments in the apical third of the

flagellum about as broad as long.

Middle lobe of mesoscutum entirely finely granulose

and dull, the lateral lobes granulose and dull along the

notauli but otherwise more shiny and weakly sha356-598 O—69 2

greened; notauli sharply impressed and foveolate; disc

of scutellum finely punctate and shiny; propodeum

rugulose, the stubs of the longitudinal carinae that

arise from the posterior margin very prominent and

sharply setting off the apical areas; side of pronotum

largely granulose and dull, rugose in the impression;

mesopleuron above the foveolate longitudinal furrow

largely smooth and polished, immediately below it a

little rugulose or confluently punctate, and farther

down finely granulose and dull like the mesopectus;

metapleuron finely granulose and dull anteriorly,

rugose posteriorly. Fore- and middle coxae shagreened;

hind coxa coarsely granulose and dull, somewhat

rugulose on upper edge toward base; hind femur

strongly shagreened, barely four times as long as broad

and less than twice as long as hind coxa; inner calcarium of hind tibia noticeably more than half as

long as metatarsus; tarsal claws simple. Radial cell on

wing margin a little shorter than stigma; second abscissa of radius on a line with intercubitus; stub of

third abscissa of cubitus at least as long as the second

abscissa; nervulus in holotype postfurcal by about onethird its length; hind wing five times as long as wide;

lower abscissa of basella much longer than nervellus

and a little more than half as long as mediella or maximum width of hind wing.

Abdomen nearly as wide as thorax; first tergite 1.2

times as long as wide at apex, closely rugulose, the

distance from the spiracle to the base much less than

one-third the distance to the apex, the dorsal keels

not developed; second tergite 1.3 times as wide at base

as long, rather uniformly, closely granulose; second

suture sharply impressed; third tergite with a little very

weak shagreening medially; remainder of dorsum of

abdomen smooth and polished; ovipositor sheath

nearly or quite as long as propodeum and abdomen

combined; ovipositor very slightly and gradually decurved apically.

Black; even the mandibles, as well as palpi and

antennae, black; venter of abdomen entirely black; legs

black, apices of fore- and middle femora and all the

tarsi dark brown; tegulae and wing bases black; wings

rather uniformly infumated.

MALE.—Essentially like the female except that the

segments of the apical part of the antennal flagellum

are longer and more slender.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Known only from the holotype female collected at Nachvak Fiord, Labrador, 15 August
16

1954, by E. E. Sterns; and a male paratype from

British Mts., Firth River, Yukon Territory, collected

24 July 1956, by R. E. Leech.

Orgilus balsameae, new species

Structurally this species is very similar to modicus, new

species, seeming to differ only in minor details; but it is

readily distinguished from modicus by its blackish

antennae, tegulae, and wing bases, its extensively

blackish legs, its slightly infumated wings and distinctly

pigmented radiella and cubitella of the hind wing.

FEMALE.—Length about 3 mm. Head broader than

thorax, in dorsal view about 0.6 as long as broad;

face just about as wide as eye height, strongly shiny,

weakly rugulose punctate, especially laterally above;

clypeus shiny, weakly punctate, medially not separated

from the face; malar space shagreened and somewhat

mat, about as long as clypeus and 0.4 as long as eye

height; lower cheeks shagreened; temples a little

rounded, gradually receding, about 0.75 as wide as

eyes, smooth and shiny, ocellocular line hardly twice

as long as diameter of an ocellus; antennae normally

29- to 31-segmented, the 10 or 12 segments before the

last about as wide as long.

Mesoscutum smooth and shiny with only indistinct

setigerous punctures; notauli sharply impressed, finely,

minutely punctate and meeting at the very apex of the

scutum; disc of scutellum smooth and polished;

propodeum finely rugulose but with a large smooth

and polished area each side of the middle at base and

five small, smooth areas at apex separated by very short

stubs of longitudinal carinae that arise from the

posterior margin; side of pronotum largely finely

rugulose but broadly smooth and shiny at upper margin ; mesopleuron smooth and polished, the longitudinal

furrow nearly straight and finely foveolate; metapleuron rugulose at the posterior margin, otherwise smooth

and shiny, with scattered, extremely shallow punctures.

Hind coxa very shiny, more or less rugulose on dorsal

edge toward base and on upper part of outer side,

largely smooth elsewhere; hind femur about twice as

long as hind coxa and 4.5 to 4.7 times as long as

broad; inner calcarium of hind tibia a little more than

half as long as metatarsus, tarsal claws simple. Radial

cell on wing margin not longer than stigma; second

abscissa of radius on a line with intercubitus; stub of

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

third abscissa of cubitus longer than second abscissa;

nervulus distinctly postfurcal; hind wing 4.6 times as

long as wide; lower abscissa of basella longer than

nervellus but not quite, or barely, half as long as mediella or maximum width of hind wing.

Abdomen slender; first tergite about one and onehalf times as long as wide at apex, weakly longitudinally sculptured but smooth and polished basally and

narrowly across apex; second tergite nearly as long

as broad at base, largely or entirely smooth and

polished, at most with a little weak sculpture each side

of middle toward base; third and following tergites

polished; second suture very fine but distinct; ovipositor sheath slightly longer than propodeum and abdomen combined.

Black; mandibles red; clypeus black; antennal

flagellum more or less brownish beneath toward base;

tegulae and wing bases black or blackish; all coxae

black, remainder of legs dark brown to black, with

considerable variation in the intensity of the darkening; wings a little infumated, radiella and cubitella

distinctly somewhat pigmented.

MALE.—Like the female in essential characters.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Quebec, New Brunswick, Ontario,

Maine, New York, and Wisconsin. The type-series

consists of the following: 3 females (one the holotype)

and 2 males reared at New Carlisle, Quebec, from

what was thought to be Pulicalvaria piceaella (Kearfott) in June and July 1958; 1 female from an unknown host on balsam fir, Ashland, Maine, 14 June

1948; 3 males from P. piceaella on balsam fir, Saranac

Lake, New York, 10 June 1948; 1 female from P.

piceaella, St. Augustine, Quebec, 29 June 1948; 1

female from the same host, St. Denis, Quebec, 26 July

1947; 1 male and 2 females from "Recurvaria" sp.,

Tobique, New Brunswick, June and July 1960; 1 male,

same host, Kedgwick, New Brunswick, 29 June 1960;

2 unusually small females with 27-segmented antennae

from unknown hosts, Burnett County, Wisconsin,

21 May 1956, and Douglas County, Wisconsin,

4 June 1956; 1 female from Zeiraphera sp., Fort William, Ontario; and 1 female, Tobique, New Brunswick, 13 July 1963, 2 females and 1 male, Upsalquitch,

New Brunswick, July 1963, 5 females and 3 males,

Green River, New Brunswick, July 1963, and 1 male,

Cape Breton, Nova Scotia, July 1963, all reared from

"Evagora sp." on balsam fir by T. Renault.
NUMBER 30

Orgilus boharti, new species

Orgilus, new species.—Bohart, 1947, p. 291.

In many respects this is very similar to vallis, new

species, but it differs from that form in its uniformly

infumated wings, in its much more coarsely rugose

propodeum with prominent and relatively long stubs

of longitudinal carinae at its posterior margin, in its

closely punctate mesoscutum, and the reddish testaceous coloring of the second and third tergites of the

female. From detectiformis Viereck, which it also

resembles closely, it differs particularly in the presence

of sculpture on the upper occiput, in the much more

strongly punctate mesoscutum, and in the sculpture

of the mesopleura.

FEMALE.—Length about 3.8 mm. Head a little

wider than thorax, in dorsal view about 0.6 as long as

wide; face 1.3 times as wide as eye height, finely

closely rugulose punctate and somewhat mat; malar

space longer than clypeus and about half as long as

eye height, finely granulose and dull; cheeks also

granulose and dull; clypeus closely punctate and shiny;

temples gradually receding, nearly three-fourths as

wide as eyes, broadly shagreened and mat along the

occipital carina, smooth and polished adjacent to the

eyes; vertex smooth and shiny, with only setigerous

punctures; occiput more or less rugulose above, the

occipital carina broadly interrupted at the middle;

ocellocular line hardly twice as long as diameter of

an ocellus; antennae 29-segmented in the available

females, not tapering noticeably toward the tips, and

with some of the segments of the apical fourth a little

wider than long.

Mesoscutum with notauli deep and coarsely foveolate; middle lobe finely and densely punctate, confluently so anteriorly, the lateral lobes more sparsely

but distinctly punctate; disc of scutellum strongly convex, smooth and shiny; propodeum coarsely rugose

reticulate on the dorsal face but with a small transverse smooth and polished area each side of the middle

at base, the rather long posterior face divided into

five large, anteriorly open areas by very prominent

stubs of longitudinal carinae; side of pronotum rugulose; mesopleuron smooth and shiny above the longitudinal furrow, rather extensively and coarsely

punctate below it, the furrow itself coarsely foveolate

and medially widened into a small rugose area; metapleuron rugose, very coarsely so on posterior lower

half. Hind coxa about half as long as hind femur,

17

rugulose above at base, rather coarsely granulose outwardly; hind femur about four and one-half times

as long as wide; inner calcarium of hind tibia slightly

more than half as long as metatarsus, tarsal claws

simple. Radial cell on wing margin about as long as

stigma; second abscissa of radius only four times as

long as the first and on a line with intercubitus; stub

of third abscissa of cubitus as long as second abscissa;

nervulus very slightly postfurcal; hind wing about 4.2

times as long as wide, lower abscissa of basella slightly

longer than nervellus but less than half as long as

mediella and much less than half as long as maximum

width of hind wing.

Abdomen nearly as wide as thorax, first tergite about

1.3 times as long as wide at apex, finely rugulose

except basally where it is smooth and shiny, the spiracles well beyond the basal third of the segment, the

basal, dorsal keels poorly developed; second tergite

large, slightly broader at base than long, largely

smooth and polished but with a little weak sculpture

medially toward base; second suture very weak; third

and following tergites smooth and polished; ovipositor

sheath as long as propodeum and abdomen combined.

Head and thorax black; palpi blackish; mandibles

and apex of clypeus reddish yellow; antennae dark

brown, scape and first flagellar segment lighter below;

tegulae and wing bases yellow; legs, including all

coxae, testaceous, with the bases of hind coxae, the

basal trochanters, the apices of hind femora and tibiae,

and all the tarsi a little darkened, hind femora not

darkened along dorsal edges and on inner surfaces as

in detectiformis and vallis; forewings entirely rather

strongly infumated; abdomen black at base and apex

but with apex of first tergite and all of second and

third tergites reddish yellow.

MALE.—In general like the female except as follows:

Antennae 30-segmented in the two available males

with complete antennae, entirely black, longer and

tapering noticeably toward tips, all flagellar segments

considerably longer than wide; clypeus entirely black;

abdomen without the conspicuous reddish-yellow band,

the second tergite piceous to castaneous with rufous

shadings laterally.

HOLOTYPE.—USNM 70141.

DISTRIBUTION.—Known only from the short typeseries consisting of the following: 2 females (one the

holotype) and 1 male reared from bent grass at Southgate, Los Angeles County, California, 29 July 1941, and

1 male reared from bluegrass, Bakersfield, California,
18

30 June 1941, by R. M. Bohart, who has informed me

in correspondence that all the specimens were reared

from the larvae of Crambus spp.; also 1 female from

Tulare County, California, 14 May 1947, collected by

N. W. Frazier.

Orgilus buccatus, new species

FIGURES 10, 10a, lOfr

These species is structurally most similar to longiceps

Muesebeck, which it resembles in its unusually long

head, with flaring temples and cheeks, but it may be

immediately distinguished by its dark legs and clypeus,

its coarsely roughened hind coxae, and its smooth

third tergite. From obscurator (Nees), which it closely

resembles superficially, it differs in its longer head,

flaring temples and cheeks, narrower first abdominal

tergite, and evenly punctate face.

FEMALE.—Length 5 mm. Head a little narrower

than thorax and 0.8 as long as wide, in dorsal view;

face protuberant, its straight-line diameter hardly as

long as eye height, its surface shiny and uniformly

covered with strong, well-separated punctures; clypeus

strongly convex, and punctate like the face; anterior

tentorial pits below level of lower eye margins; malar

space about 0.4 as long as eye height, minutely punctate; cheeks and temples very broad and flaring beyond outer margins of the eyes, the cheeks shiny and

with rather well-separated punctures, the temples

shiny and weakly punctate and at their widest a little

wider than eyes; frons rugulose; vertex largely smooth

but with scattered punctures; back of head above

rugulose punctate; occipital carina distinct only at

the sides; ocellocular line less than twice the diameter

of an ocellus; antennae of the single known specimen

broken, 25 segments remaining, the last of which is as

broad as long.

Thorax stout, deeper than wide; mesoscutum covered with sharp, well-separated punctures; notauli

very shallow but finely foveolate and extending into

an elongate median rugose area on apical third of

scutum; disc of scutellum punctate like mesoscutum;

propodeum very weakly declivous caudad, and closely

rugulose with only a very small smooth and polished

area each side at base, the usual short apical carinae

not distinct; side of pronotum completely rugose; mesopleuron smooth and shiny, the longitudinal furrow

a little sinuate and strongly foveolate; metapleuron

largely rugulose punctate, weakly so anteriorly above.

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Hind coxa rugulose above, closely, strongly punctate

on outer side, shiny; hind femur about four times as

long as broad; hind tibia with numerous short and

stout spines on outer side near apex, the inner calcarium slightly more than half as long as metatarsus;

tarsal claws simple. Radial cell on wing margin barely

as long as stigma; second abscissa of radius on a line

with intercubitus; stub of third abscissa of cubitus a little longer than second abscissa; nervulus slightly postfurcal; hind wing about four times as long as wide;

lower abscissa of basella not longer than nervellus and

much less than half as long as mediella.

Abdomen a little narrower than thorax; first tergite

fully one and one-half times as long as wide at apex,

completely closely rugulose except for the small basal

impression, which is smooth and polished; second tergite about as long as broad at base, finely rugulose except along apical margin where it is smooth and

polished; third and following tergites smooth and

polished; ovipositor sheath about as long as thorax and

abdomen combined.

Black; mandibles reddish; antennae dark brown beneath ; tegulae and wing bases black; wings subhyaline;

coxae and trochanters black, remainder of the legs

largely dark brown or piceous; venter of abdomen

ferruginous.

HOLOTYPE.—USNM 70143.

DISTRIBUTION.—Known only from the holotype female collected at Long Beach, Long Island, New York,

17 April 1926, by F. M. Schott. In the United States

National Museum collection there is a male specimen

from Mono County, California, taken at an elevation of

10,000 feet, which is so strikingly similar to the type

that it would appear to be the same species, but this

seems unlikely in view of the locality record. More material of the western form, and especially female specimens, will be required to determine its status.

Orgilus burksi, new species

Although very similar to conflictanae, new species,

burksi may be distinguished as shown in the key (couplet 108).

FEMALE.—Length about 3.2 mm. Head a little

wider than thorax, and in dorsal view 0.65 as long as

wide; face slightly narrower than eye height, shiny,

weakly shagreened above, smooth and shiny below;

clypeus smooth and shiny, almost impunctate; malar

space barely 0.4 as long as eye height, weakly
NUMBER 30 19

shagreened and shiny; cheeks smooth and polished except near their lower margins where they are weakly

shagreened; temples polished, rather strongly rounded

and about 0.6 as wide as eyes; vertex and frons (except

the latter narrowly at eye margins) smooth and shiny;

ocellocular line hardly twice as long as diameter of an

ocellus; antennae of holotype 32-segmented, even the

shortest flagellar segments at least as long as broad.

Thorax slender; mesoscutum smooth and shiny, the

middle lobe with some very shallow punctures, the

lateral lobes impunctate; notauli strongly foveolate;

disc of scutellum small, shiny, with a few indistinct

punctures; propodeum rugose, with a narrow, transverse polished area each side of middle at base, and the

large apical areas, which are set off by short longitudinal carinae, largely smooth and shiny; side of pronotum

largely finely rugulose and shiny, more weakly roughened above and with a large area at anterior margin

coarsely granulose and dull; mesopleuron smooth and

polished, the longitudinal furrow coarsely foveate;

metapleuron smooth and shiny except posteriorly and

below where it is rugulose. Hind coxa finely granulose

above and on upper part of outer side; hind femur

hardly twice as long as hind coxa and 4.3 times as long

as broad; inner calcarium of hind tibia a little more

than half as long as metatarsus; tarsal claws simple.

Stigma just about as long as radial cell and very narrow; radius arising from well beyond middle of stigma,

the first abscissa longer than width of stigma, the second more than 5 times as long as the first and on a line

with intercubitus; stub of third abscissa of cubitus as

long as second abscissa; nervulus postfural by about

one-third its length; hind wing about 5.5 times as long

as wide; lower abscissa of basella a little more than half

as long as mediella or maximum width of hind wing.

Abdomen at widest point about as wide as thorax at

tegulae; first tergite about 1.7 times as long as wide at

apex and closely finely granularly rugulose except

basad of spiracles where it is smooth and shiny, the

spiracles about twice as far from apex of tergite as

from base, the distance between them one and one-half

times the distance to the base; second tergite as long as

wide at base, noticeably wider at apex than at base,

smooth and polished, with only a few faint punctures

laterally near base; the following tergites entirely

smooth and polished; ovipositor sheath barely longer

than abdomen.

Black; clypeus entirely black; antennae testaceous

above as well as below on more than basal third and

including the scape; legs largely testaceous, the hind

coxae rather broadly blackish basally; hind femora

black on apical half; hind tibiae a little darkened;

tegulae and wing bases yellowish brown; wings distinctly a little infumated.

MALE.—Unknown.

HOLOTYPE.—USNM 70142.

DISTRIBUTION.—Known only from female holotype

collected on Mt. Mitchell, North Carolina, at 5500

feet, 9 September 1950, by B. D. Burks.

Orgilus californicus (Provancher)

Eubadizon calif ornicus Provancher, 1888, p. 383.

Orgilus californicus (Provancher).—Muesebeck and Walkley,

1951, p. 111.

Superfically this seems most similar to cuneatus

(Provancher), but the malar space is relatively much

longer and the face broader, and the hind wing is relatively wide, with the lower abscissa of basella barely

longer than the nervellus; in addition, californicus is

much larger. I have seen no other specimen that I can

confidently identify as californicus. The following notes

are based on the female holotype.

Length about 4 mm. Head a little wider than

thorax, in dorsal view about 0.6 as long as wide; face

about 1.3 times as wide as eye height, mat, rather

strongly sculptured and densely hairy, the hair punctures tending to form aciculae that converge obliquely

on the meson; malar space conspicuously more than

half as long as eye height, nearly 1.5 times as long as

clypeus, and granulose and mat; cheeks shagreened

and mat; temples smooth and shining near the eyes,

somewhat shagreened adjacent to the occipital carina;

antennae broken, but 28 segments of the right antenna

remain, the last of these, like several of the preceding

ones, slightly broader than long.

Mesoscutum shining, rather thickly hairy; propodeum largely very finely rugulose, but smooth and

shining at base and in the apical lateral angles; mesopleuron smooth and shining, the longitudinal furrow

foveolate; metapleuron shiny and nearly smooth above

with only a little faint shagreening there, rugulose below. Hind coxa somewhat granulose and opaque;

longer calcarium of hind tibia a little more than half as

long as metatarsus; tarsal claws simple. Radial cell on

wing margin about as long as stigma; second abscissa

of radius on a line with intercubitus; nervulus a little

postfurcal; hind wing not nearly five times as long as
20

wide; lower abscissa of basella about as long as nervellus

and much less than half as long as mediella or maximum width of hind wing.

Abdomen elongate, narrower than thorax; first and

second tergites finely rugulose, the second nearly

parallel-sided, the suture between it and the third

sharply impressed; third tergite largely smooth and

shining but with a small, finely, and confluently punctate area near base; ovipositor sheath about as long as

propodeum and abdomen combined.

Black; antennae reddish yellow on basal half, the

scapes darkened above; clypeus yellow on lower third;

tegulae yellowish; legs brownish yellow, the hind coxae

weakly darkened basally above; wings a little infumated; abdomen black but with conspicuous yellowish

spots in the apical corners of the first and second tergites, the second tergite also rather broadly pale along

the lateral margins.

MALE.—Unknown.

HOLOTYPE.—In the Quebec Provincial Museum collection, Laval University, Sainte Foy, Quebec.

DISTRIBUTION.—Known only from the holotype,

which was taken at Los Angeles, California, by D. W.

Coquillett.

Orgilus capsicola, new species

FIGURES 11,21

Orgilus, new species, Schuster, 1959, p. 118.

Superficially this species resembles some of the smaller

specimens of lateralis (Cresson), but it may be at once

distinguished from that species by its relatively short

radial cell and simple tarsal claws.

FEMALE.—Length about 3 mm. Head wider than

thorax, in dorsal view about twice as broad as long;

face nearly flat, smooth and shiny, with scattered, very

shallow punctures, its width subequal to the eye

height; clypeus smooth and polished; anterior ten tonal

pits on a line with the lower eye margins; malar space

about one-fourth as long as eye height, weakly

shagreened; cheeks very shiny, slightly shagreened near

malar line; temples receding gradually, half as wide

as eyes, smooth and shiny; occipital carina not strong

but complete; ocellocular line hardly twice as long as

diameter of an ocellus; antennae 23- to 25-segmented

in the available specimens, even the shortest segments

of the flagellum distinctly longer than broad, the apical

segment with a short but distinct terminal spicule.

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Mesoscutum largely smooth and shiny, with scattered, very shallow punctures on the lobes; notauli

sharply impressed and finely foveolate; disc of scutellum evenly convex, smooth; propodeum rugulose punctate, the petiolar area not marked off by stubs of

carinae arising from the posterior margin; side of pronotum very shiny, nearly smooth, with only weak

shagreening below and above the impression; mesopleuron smooth and polished, the longitudinal furrow

sinuate and finely foveolate; metapleuron smooth and

shiny, with a few weak puctures. Hind coxa about

two-thirds as long as hind femur, shiny, weakly

shagreened on outer side; hind femur hardly four times

as long as broad; inner calcarium of hind tibia not

more than half as long as metatarsus; tarsal claws

simple. Radial cell on wing margin not or barely longer

than stigma; second abscissa of radius very nearly on

a line with intercubitus; stub of third abscissa of cubitus

punctiform; nervulus postfurcal by more than onethird its length; hind wing a little more than 4 times

as long as wide; lower abscissa of basella much longer

than nervellus and about half as long as mediella.

Abdomen about as wide as thorax; first tergite almost or quite as broad at apex as long, closely punctate

or rugulose punctate, the dorsal keels not distinct, the

spiracles much farther from each other than from the

base of the segment; second tergite nearly twice as

broad as long, sculptured like the first; second suture

sharply impressed and curved forward at the sides;

third, fourth, and fifth tergites all strongly transverse

and all more or less punctate, the fifth very sparsely so;

ovipositor sheath slightly longer than the abdomen.

Brownish yellow, sometimes with dark markings on

the vertex and the back of the head, on the mesonotal

lobes and on the sides of the scutellum; antennae

brown, paler beneath; palpi pale; propodeum and

mesopectus blackish; wings clear hyaline; tegulae and

wing bases yellow; legs yellow, apices of hind femora

darkened, also hind tibia on apical third and narrowly

a little beyond base; extreme base of hind tibia whitish;

all tarsi darkened; abdomen testaceous or brownish

yellow, with the first tergite and sometimes the second

more or less darkened medially.

MALE.—Essentially like the female but darker.

HOLOTYPE.—USNM 70144.

DISTRIBUTION.—Known only from the type-series

consisting of 8 females (one the holotype) and 6 males

which were reared from the pepperflower budworm,

Symmetischema capsicum (Bradley and Povolny),
NUMBER 30 21

often incorrectly recorded in the literature under the

name Gnorimoschema gudmanella (Walsingham), at

Weslaco, Texas, in March 1967, by M. F. Schuster.

Orgilus cerinus, new species

In size and general color this species is very much like

pumilus, new species, but it is readily distinguished

from that species by its relatively broader face and

longer malar space, shorter ovipostitor, smoother

cheeks, and basally hyaline forewings.

FEMALE.—Length about 2.5 mm. Head wider than

thorax, in dorsal view barely more than half as long as

wide; face 1.3 times as wide as eye height, shiny, weakly

and sparsely punctate and a little shagreened between

the punctures on the upper half laterally; clypeus

smooth and shiny; malar space decidedly longer than

clypeus and 0.55 as long as eye height, finely shagreened ; cheeks shiny, smooth except near lower margins where they are very weakly shagreened; temples

nearly as wide as eyes, smooth and shiny; frons shagreened laterally; occipital carina broadly interrupted

medially; ocellocular line at least twice as long as diameter of an ocellus; antennae slender, 25- and 26-segmented in the two available specimens, even the segments of the apical fourth of the flagellum noticeably

longer than broad.

Mesoscutum smooth and shiny, with only a few,

rather indistinct, punctures; notauli sharply impressed

and very finely foveolate; disk of scutellum smooth

and shiny; propodeum rugulose, with a small smooth

and polished area each side at base, and with the apical

areas rather smooth but poorly defined, the stubs of the

carinae that arise from the posterior margin being

weak or indistinct; side of pronotum closely rugulose

except narrowly along upper margin; mesopleuron

smooth and polished, the longitudinal furrow weakly

sinuate and foveolate; metapleuron rugulose at the

posterior margin, elsewhere with scattered, shallow

punctures, and shiny. Hind coxa only half as long as

hind femur, largely smooth, weakly rugulose above

toward base; hind femur 4.5 times as long as broad;

inner calcarium of hind tibia not more than half as

long as metatarsus; tarsal claws simple. Radial cell on

wing margin just about as long as stigma; second

abscissa of radius on a line with intercubitus; stub of

third abscissa of cubitus as long as second abscissa;

nervulus slightly postfurcal; hind wing about 4.3 times

as long as wide; lower abscissa of basella a little longer

than nervellus but less than half as long as mediella.

Abdomen with first tergite about 1.4 times as long

as wide at apex, finely longitudinally rugulose punctate, the dorsal keels indicated only at extreme base;

second tergite about 1.2 times as wide at base as long,

smooth and shiny laterally and posteriorly but with the

median basal half very fine confluently punctate; remainder of abdomen smooth and shiny; ovipositor

sheath only slightly longer than abdomen.

Head and thorax reddish yellow; palpi dark; antennae reddish yellow basally, especially below, elsewhere

brown; tegulae and wing bases yellow; wings hyaline

basally, somewhat infumated apically; legs yellowish

brown, the hind femora darkened inwardly toward

apices, also the hind tibiae more or less and the hind

tarsi darkened; abdomen testaceous on first and second tergites, the third and following darkened.

MALE.—Unknown.

HOLOTYPE.—USNM 70145.

DISTRIBUTION.—Known only from two females, one

the holotype, taken at Claypool, Arizona, 19 June

1957, by F. G. Werner and G. D. Butler.

Orgilus cinctus, new species

This species is exceedingly like fictus in structure, but

the second tergite is relatively longer and the propodeum is smoother at the base; in color it differs strikingly, at least in the female, in having the apex of the

first tergite and all the second and third tergites yellow.

FEMALE.—Length about 3.2 mm. Head not wider

than thorax, deeply excavated behind, in dorsal view

0.75 as long as wide; straight-line width of face a little shorter than eye height; face weakly and minutely

punctate on a shagreened surface; malar space about

0.3 as long as eye height; the anterior tentorial pits

only very slightly below level of lower eye margins;

cheeks and temples smooth and polished, the latter not

receding and about 0.75 as wide as eyes; frons smooth

medially, shagreened laterally; occiput carinately margined only at the sides; ocellocular line 1.5 times as

long as diameter of an ocellus; antennae of holotype

33-segmented, even the shortest flagellar segments distinctly longer than broad.

Thorax slender; mesonotal lobes shiny, not distinctly

punctate; notauli sharply and deeply impressed, finely

foveolate; propodeum largely smooth at base, elsewhere finely rugulose; side of pronotum finely rugulose, mesopleuron smooth and polished, the longitu-
22 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

dinal furrow strongly foveolate; metapleuron largely

very finely coriaceous, rugose at the posterior margin.

Hind coxa finely shagreened, about 0.6 as long as hind

femur, the latter about 4 times as long as broad; inner

calcarium of hind tibia a little more than half as long

as metatarsus; tarsal claws simple. Radial cell on wing

margin barely longer than stigma; second abscissa of

radius on a line with intercubitus; stub of third abscissa of cubitus subequal with second abscissa; nervulus very slightly postfurcal; hind wing very narrow,

more than five times as long as wide; lower abscissa

of basella much longer than nervellus and at least half

as long as mediella or as maximum width of hind wing.

Abdomen with first tergite about 1.5 times as long

as wide at apex, smooth and polished medially toward base, finely rugulose or granulose beyond; second

tergite very nearly or quite as long as broad at base,

largely finely granulose but very narrowly smooth at

apex; third tergite with a little confluent punctation

near base, otherwise smooth and shiny like the following tergites; ovipositor sheath about as long as

distance from base of scutellum to end of abdomen.

Head and thorax black; antennae yellow brown,

darker apically; palpi piceous; mandibles yellow; legs

yellow, hind femora apically and hind tibiae basally

and apically a little darkened and all tarsi dark; tegulae and wing bases yellow; wings very weakly infumated; abdomen black or blackish at base and at apex,

the apical part of the first tergite, all of the second

tergite and most of the third reddish yellow.

MALE.—Unknown.

HoLOTYPE.—USNM 70146.

DISTRIBUTION.—Known only from the holotype female from Wolcott, New York, 18 May 1955,

N. Neunzig, and a female paratype from Holliston,

Massachusetts, 2 August, N. Banks. A male from Lyme,

Connecticut, which is in the United States National

Museum collection, may be this species, but more

material will be needed for definite identification.

Orgilus citus, new. species

FIGURE 55

Although this species is very close to gracilis (Brues),

it seems to be distinct. The second tergite is almost

completely smooth and very shiny, and the hind coxae

are usually much darker. In addition, the face is more

completely shagreened and rather mat, the first tergite has the spiracles farther from the base and has distinct, although weak, dorsal keels extending to beyond

the spiracles, and the lower abscissa of basella is relatively longer.

FEMALE.—Length about 3 mm. Head in dorsal

view about 0.6 as long as wide; face not, or barely,

wider than eye height, minutely shagreened and rather

mat; malar space just about as long as clypeus and

about 0.43 as long as eye height, shagreened and mat;

cheeks very shiny, shagreened and mat only near lower

margins, the upper part a little alutaceous; temples

about 0.75 as wide as eyes, receding, smooth and polished except narrowly along occipital carina where

they are weakly shagreened; occiput carinately margined only at the sides; vertex usually a little shagreened laterally; ocellocular line 2.5 times as long as

diameter of an ocellus; antennae 27- to 29-segmented

in the available specimens, some segments in apical

fourth of flagellum as wide as long.

Mesoscutum shiny, the middle lobe with some very

weak punctures; notauli sharply impressed, very fine,

and finely foveolate; propodeum more or less rugulose on a granulose ground, the stubs of the longitudinal carinae that arise from the posterior margin

rather prominent; side of pronotum finely granulose

anteriorly, rugulose in the impression; mesopleuron

smooth and polished, the longitudinal furrow complete and foveolate; metapleuron granulose and mat,

rugulose at the lower posterior margin. Hind coxa

finely granulose or shagreened above and on outer

side; hind femur barely twice as long as hind coxa but

nearly five times as long as broad; inner calcarium of

hind tibia more than half as long as metatarsus; tarsal

claws simple. Radial cell on wing margin as long as

stigma; second abscissa of radius on a line with intercubitus; stub of third abscissa of cubitus fully as long

as second abscissa; nervulus just postfurcal; hind wing

five times as long as wide, the anterior and posterior

margins virtually parallel; lower abscissa of nervellus

nearly or quite half as long as mediella or maximum

width of hind wing.

First abdominal tergite finely rugulose punctate, very

delicately shagreened and shining at base, about 1.4

times as long as broad at apex, the spiracles at end

of basal third, the dorsal keels weak but distinct to

beyond the spiracles; second tergite just about as long

as broad at base, and broadening a little caudad,

smooth and polished, only a little alutaceous or faintly

shargreened basally; remainder of abdomen smooth

and polished; ovipositor sheath barely as long as

propodeum and abdomen combined.
NUMBER 30 23

Black; mandibles and lower half of clypeus testaceous; antennae yellow on basal half, darkened apically,

the scapes darkened above; legs yellow, but the hind

coxae usually black except at the apices, occasionally

largely testaceous, hind femora on inner side and

above, hind tibiae apically, and all the tarsi a little

darkened; tegulae and wing bases yellow; wings a

little smoky, especially apically.

MALE.—A little more shiny than the female, and

the antennae darker and a little more slender.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Known only from the type-series

which consists of the following: 3 females and 1 male

from Parke Reserve, Kamouraska County, Quebec,

950 feet, collected by W. R. M. Mason, the holotype

female and 1 male paratype on 9 August 1957, the 2

paratype females on 7 August and 13 August 1957;

2 paratype males taken at Biscotasing, Ontario, July

1930, by K. E. Schedl; and 1 paratype male collected

at Madoc, Ontario, 24 July 1952, and 1 paratype female taken at Chatterton, Ontario, 22 July 1951, both

by J. C. Martin.

Orgilus clivicola, new species

Superficially this species closely resembles compactus,

new species, but it differs in the color of the abdomen

and legs, in the rather flat mesoscutum and disc of

scutellum, more slender antennae and shagreened

cheeks.

FEMALE.—Length 3.3 mm. Head not wider than

thorax, in dorsal view 0.6 as long as broad. Face at

narrowest hardly wider than eye height, rather

strongly convex, largely finely punctate but a little

rugulose just below antennae; malar space longer than

clypeus and 0.47 as long as eye height, shagreened;

cheeks shagreened; temples at mideye point 0.8 as

wide as eyes, largely smooth and polished but weakly

shagreened along occipital carina, which is broadly

interrupted medially; ocellocular line hardly twice as

long as diameter of an ocellus; antennae of holotype

27-segmented, none of the segments quite as broad as

long.

Mesoscutum rather flat, smooth and shiny, without

distinct punctures; notauli very shallow but finely

foveolate, a few confluent punctures at the junction

of the notauli; scutellar sulcus deep and long, strongly

foveate; disc of scutellum flat, smooth and polished,

impunctate; propodeum strongly convex, largely rugulose but with a fairly large smooth and polished area

each side at extreme base and rather smooth in the

apical areas, which are defined by very short stubs

of longitudinal carinae that arise from the posterior

margin; side of pronotum rather strongly rugulose

over most of its surface; mesopleuron smooth and

polished, the longitudinal furrow nearly straight and

evenly foveolate; metapleuron smooth and shiny

except posteriorly where it is rugulose punctate. Hind

coxa finely rugulose above toward base and on outer

side; hind femur a little less than twice as long as

hind coxa and about 4.3 times as long as broad; inner

calcarium of hind tibia fully half as long as metatarsus;

tarsal claws simple. Radial cell on wing margin not

quite as long as stigma; second abscissa of radius on

a line with intercubitus; stub of third abscissa of

cubitus as long as second abscissa; nervulus clearly

postfurcal; hind wing about 4.3 times as long as wide;

lower abscissa of basella longer than nervellus but less

than half as long as mediella or maximum width of

hind wing.

Abdomen stout and short; first tergite nearly 0.9 as

broad at apex as long; finely rugulose across the middle

part, smooth and shiny at base before spiracles and

narrowly so at apex, the spiracles twice as far from

each other as from base and more than twice as far

from apex as from base; the dorsal keels of first tergite

not developed; second tergite 1.5 times as broad at base

as long, finely rugulose on a basal median area that

extends beyond the middle of the tergite on the median

line, smooth and polished elsewhere; the second suture

very faint; third tergite much shorter than second,

smooth and polished but with a small, transverse, confluently punctate area near base; segments beyond the

fourth largely retracted; ovipositor sheath just about

as long as abdomen.

Blackish brown; the abdomen a little lighter than

head and thorax, especially on the margins of the first

tergite; antennae brown, paler basally, gradually

darkening apically; palpi piceous; clypeus except at

the extreme base and the mandibles reddish yellow;

legs testaceous, the hind femora completely so, the

tarsi somewhat darkened; tegulae and wing bases piceous ; wing subhyaline.

MALE.—Unknown.

HOLOTYPE.—USNM 70147.

DISTRIBUTION.—Known only from the holotype

female collected at Colorado Springs, Colorado, 5915

feet, in August, by E. S. Tucker.
24 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Orgilus cognatus, new species

In habitus, structure, and sculpture this species is very

similar to compactus, new species, but it differs in its

relatively wider face and temples and longer malar

space, and in its paler legs, clypeus, and antennae.

From clivicola, new species, which it also closely resembles, it differs in its relatively broader face, smoother

cheeks, more convex mesoscutum and scutellar disc,

virtually interstitial nervulus and somewhat stouter

antennae.

FEMALE.—Length 3.5 mm. Head slightly broader

than thorax, in dorsal view 0.55 as long as broad; face

1.25 times as wide as eye height, smooth and shiny with

only weak setigerous punctures; malar space longer

than clypeus and very nearly half as long as eye height;

cheeks smooth and shiny, weakly alutaceous below;

temples smooth and polished, nearly as wide as eyes;

vertex smooth and shiny; occipital carina rather

broadly interrupted medially; ocellocular line a little

more than twice as long as diameter of an ocellus; antennae of holotype 29-segmented, several of the preapical segments a little wider than long.

Mesoscutum smooth and shiny; notauli shallow but

foveolate, no rugulose area at their junction; disc of

scutellum slightly convex, smooth, and polished; propodeum rugulose, the stubs of the apical longitudinal

carinae distinct but short and not very prominent, a

transverse smooth and polished area each side at base;

side of pronotum rugulose except along upper margin

where it is broadly rather smooth; mesopleuron smooth

and polished, the longitudinal furrow a little sinuate,

completely and uniformly foveolate; metapleuron

largely rugulose punctate, smooth and shiny in the

anterior angle. Hind coxa about 0.6 as long as hind

femur, rugulose above toward base, weakly roughened

on outer side; hind femur four times as long as broad;

inner calcarium of hind tibia fully half as long as metatarsus; tarsal claws simple. Radial cell on wing margin

as long as stigma; second abscissa of radius on a line

with intercubitus; stub of third abscissa of cubitus as

long as second abscissa; nervulus virtually interstitial;

hind wing 4.5 times as long as wide; lower abscissa of

basella a little less than half as long as mediella; radiella and cubitella very weak, not pigmented.

Abdomen short and broad; first tergite 0.8 as broad

at apex as long, rugulose or rugulose punctate, even on

basal third, only a band across apex smooth, the dorsal

keels not distinct; spiracles of first tergite twice as far

from each other as from base and more than twice as

far from apex as from base; second tergite 1.5 times

as broad at base as long, smooth and polished except

for a small confluently punctate area basally each side

of the middle; third tergite smooth and polished, with

no suggestion of sculpture; the second suture very fine

but distinct; fourth tergite very short, the following

almost entirely retracted; ovipositor sheath very

slightly longer than abdomen.

Black, clypeus and mandibles testaceous; antennae

testaceous on basal half, darkened apically; palpi piceous; tegulae blackish, wing bases reddish yellow; wings

hyaline basally, slightly smoky apically; legs testaceous,

with only bases of hind coxae and apical segment of

each tarsus darkened; posterior corners of first tergite

and a small subapical spot at each side of second tergite

reddish.

MALE.—Unknown.

HOLOTYPE.—USNM 70148.

DISTRIBUTION.—Known only from the holotype female collected at Lapoint, Utah, 25 September 1925,

by C. J. Sorenson.

Orgilus coleophorae, new species

FIGURES 7, la, 1b, 14, 22

This species is most similar to gelechiae (Ashmead)

and momphae, new species. From the former, which it

resembles in the character of the tarsal claws, it differs

in its narrower temples, relatively broader hind wings

and relatively shorter lower abscissa of basella; from

momphae it may be at once distinguished by the lack

of a subbasal tooth on the tarsal claw, and by the

shorter antennae and relatively broader hind wings.

FEMALE.—Length around 3.5 mm. Head not distinctly wider than thorax, but nearly twice as wide as

long in dorsal view; face, frons, vertex, temples, and

cheeks finely granulose and mat; face only very slightly

broader than eye height; anterior tentorial pits on a

line with lower eye margins; clypeus strongly convex,

smooth; malar space shorter than clypeus and about

one-third as long as eye height; temples less than half

as wide as eyes and strongly receding; occipital carina

broadly interrupted medially; ocellocular line less than

twice as long as diameter of an ocellus; antennae

usually 28- to 33-segmented in the specimens examined,

rarely 34- to 36-segmented.

Mesoscutum and scutellum delicately shagreened

and more or less dull; notauli complete but usually not

distinctly foveolate; propodeum granulose and mat and
NUMBER 30 25

without spurs of longitudinal carinae arising from the

posterior margin; side of pronotum, and the mesopleuron and metapleuron finely coriaceous; longitudinal furrow of mesopleuron very weak but more or less

foveolate. Hind coxa finely granulose; hind femur not

more than four times as long as wide; longer calcarium

of hind tibia slightly less than half as long as metatarsus; tarsal claws simple. Radial cell on wing margin

barely longer than stigma; cubitus ending abruptly at

intercubitus, not even a vestige of third abscissa of

cubitus present; nervulus sometimes interstitial but

usually a little postfurcal; hind wing about 4.7 times as

long as wide; lower abscissa of basella a little longer

than nervellus but not or hardly half as long as mediella

or maximum width of hind wing.

Abdomen with all tergites very finely, contiguously,

or even confluently, punctate, the apical ones more

weakly so; all tergites beyond the first strongly transverse, the second about twice as broad as long, the following relatively even broader, the second suture

sharply impressed; ovipositor sheath usually about as

long as the hind tibia.

Black, antennae dark brown toward bases; clypeus

reddish anteriorly; palpi yellow; thorax usually black

but sometimes varied with reddish yellow below and

on the sides; tegulae testaceous; wings clear hyaline;

fore- and middle legs yellow, their tarsi darkened;

hind coxae blackish above, reddish brown on the sides

and below; hind femora reddish yellow, blackish at

apices, hind tibiae and tarsi blackish, the tibiae narrowly yellow at bases; abdomen beyond the first tergite

usually more or less brownish, at least along the lateral

margins.

MALE.—Essentially like the female, but the abdomen

is somewhat darker and the legs are more extensively

darkened; antennae 28- to 33-segmented in the male

specimens examined.

HOLOTYPE.—USNM 70149.

DISTRIBUTION.—The type-series consists of the following: 25 females (one the holotype) and 31 males

reared by A. E. Brower on Mt. Desert Island, Maine,

from Coleophora salmani Heinrich in July and August

1930; 6 females and 4 males reared from the same host

and at the same locality by R. L. Taylor in July 1929;

and from 18 females and 27 males from Queen's

County, New Brunswick, July 1949, 1 female and 6

males from York County, New Brunswick, July 1948

and 1949, 1 male from St. John County, New Brunswick, July 1948, and 1 female from Halifax County,

Nova Scotia, July 1949, all reared from C. salmani. In

addition I have seen the following material not

included in the type-series: Specimens from Coleophora sp. on blackberry, Melrose Highlands, Massachusetts; from C. ulmifoliella McDunnough in

New Hampshire and Ontario; from C. laricella

Huebner in New Brunswick; from C. sp. on

hickory, in Ontario; from C. monardella McDunnough and C. cretaticostella Clemens in Ontario; from

C. umbrotica Braun in Virginia; from C. limosipenella

Duponchel in Ontario; and from Recurvaria thujaella

Kearfott in Maine; most of these reared in the month

of July. I have also seen specimens without host data

from various localities in Nova Scotia, Quebec, Ontario, New York, Michigan, Illinois, Wisconsin, Iowa,

and Alaska.

There is considerable variation in color. In general

the type-series and other specimens from North Atlantic coastal areas agree with the color description given

above. Specimens from farther inland, however, are

normally much lighter in color, the hind coxae sometimes entirely yellow, the face brownish yellow, and the

thorax and abdomen more or less extensively brownish

yellow.

Orgilus coloradensis, new species

FIGURES 5, 5a, 56

The unusually broad temples, combined with 36- to

38-segmented antennae, distinguish this form from the

known related species. A large, rather stout species.

FEMALE.—Length about 5 mm. Head clearly

broader than thorax, in dorsal view 0.7 as long as

broad, deeply excavated behind; face at narrowest

point 1.35 times as wide as eye height and strongly,

completely, and closely punctate, sometimes partly

rugulose punctate; malar space longer than clypeus

and 0.6 as long as eye height; clypeus punctate; temples

at mideye point about 1.2 times as wide as eyes,

weakly convex and barely receding, with some

small and shallow scattered punctures; cheeks minutely

granulose; occipital carina developed only at the sides;

ocellocular line nearly three times as long as diameter

of an ocellus; antennae 36- to 38-segmented in the

available specimens, some segments in apical fifth of

flagellum about as broad as long.

Thorax large and stout; mesonotal lobes shining,

with scattered and very shallow punctures that are most

abundant on the middle lobe; notauli sharply irn-
26

pressed and completely foveolate; disc of scutellum

with a few weak punctures; propodeum rugulose reticulate, with a narrow, transverse, polished area of each

side of the middle at base, the stubs of the longitudinal

carinae that arise from the posterior margin poorly developed so that the apical areas are not well defined;

side of pronotum rugulose; mesopleuron very shiny,

the longitudinal furrow strongly foveolate, and usually

numerous sharp punctures below the furrow, especially

anteriorly; metapleuron rugulose posteriorly and below, punctate elsewhere. Hind coxa rugulose above

and on upper part of outer side; hind femur nearly

five times as long as its greatest width; longer calcarium of hind tibia more than half as long as metatarsus; tarsal claws simple. Radial cell on wing margin

just about as long as stigma; second abscissa of radius

on a line with intercubitus; stub of third abscissa of

cubitus fully as long as second abscissa and strongly

curved; nervulus slightly postfurcal; hind wing about

four times as broad as long; nervellus and the two

abscissae of the basella subequal in length and less than

half as long as mediella.

Abdomen stout; first tergite about 1.5 times as long

as broad at apex, finely rugulose; second tergite as

long as broad at base, sometimes partly rugulose punctate, sometimes partly shagreened, but always broadly

smooth apically and laterally and usually also smooth

medially at base; third and following tergites smooth

and shiny; ovipositor not decurved at apex, the sheath

barely longer than abdomen.

Yellow ferruginous; palpi darkened; antennae reddish yellow, blackish apically; mesosternum, metanotum, and the metapleura in part, blackish; occasionally some irregular piceous markings on the second and

following tergites; inner side of hind femur and all

tarsi somewhat darkened; tegulae yellowish; wings

slightly smoky.

MALE.—In structure essentially like the female; in

color it usually differs markedly, being almost entirely

black; tegulae dark, the wing bases lighter; legs largely

reddish, the hind coxae black and all femora darkened

above. The antennae of the available male specimens

are broken.

HOLOTYPE.—USNM 70150.

DISTRIBUTION.—Known only from the short typeseries which consists of the following: 4 females (one

the holotype) and 3 males all taken by C. F. Baker at

Fort Collins, Colorado, in 1894, the holotype and

three of the paratypes collected on alfalfa. From the apSMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

pearance of these few specimens it would seem that

there is considerable color variation in both sexes of

this species.

Orgilus compactus, new species

In habitus this species rather closely resembles gramineus, new species, but it is readily separable as

pointed out in the description of that species. It is apparently even more similar to cognatus, new species,

and clivicola, new species, which it resembles in the

short ovipositor and in the retraction of the apical abdominal segments. From both it may be at once distinguished, however, by its shorter malar space, stouter

female antennae, and deep black color.

FEMALE.—Length 3.1 mm. Head not wider than

thorax, in dorsal view 1.6 times as wide as long; face

barely wider than eye height (in ratio of 63:60), very

smooth and shiny but with some minute well-separated

punctures; malar space not longer than clypeus and

only slightly more than 0.4 as long as eye height;

shiny and only faintly alutaceous; cheeks smooth and

very shiny, faintly alutaceous only below; temples

smooth and polished, about 0.75 as wide as eyes; occipital carina broadly interrupted medially; ocellocular line more than twice as long as diameter of an

ocellus; antennae stout, 29-segmented in the single

specimen in which they are complete, most of the

segments beyond the fifteenth clearly wider than long.

Thorax stout; mesoscutum very smooth and shiny,

only weakly punctate anteriorly on the middle lobe;

notauli sharply impressed, finely foveolate; disc of

scutellum small, convex, smooth, and polished,

impunctate; propodeum finely rugulose, narrowly

smooth and polished on a small transverse area each

side of middle at extreme base, and more or less

smooth and shiny at apex, the stubs of longitudinal

carinae arising from the posterior margin not well

developed and the apical areas, therefore, poorly indicated; side of pronotum finely rugulose, nearly smooth

below upper margin; mesopleuron smooth and

polished, the longitudinal furrow finely foveolate;

metapleuron smooth and shiny anteriorly, rugulose

posteriorly. Hind coxa granulose above toward base,

largely smooth and very shiny on outer side; hind

femur less than twice as long as hind coxa and about

4.3 times as long as wide; inner calcarium of hind

tibia slightly more than half as long as metatarsus;

tarsal claws simple. Radial cell on wing margin a little
NUMBER 30 27

shorter than stigma; second abscissa of radius on a

line with intercubitus; first abscissa of radius much

longer than width of stigma; stub of third abscissa

of cubitus at least as long as second abscissa; nervulus

slightly postfurcal; hind wing about 4.8 times as long

as wide; lower abscissa of basella longer than nervellus but less than half as long as mediella or maximum

width of hind wing.

Abdomen short and stout; first tergite at least 0.8 as

broad at apex as long, finely rugulose, the dorsal keels

not developed, the spiracles about twice as far from

each other as from base of segment; second tergite

about 1.3 times as broad at base as long, largely smooth

and shiny, weakly rugulose basally each side of the

middle; second suture fine but sharply impressed;

third and fourth tergites smooth and shiny, the remainder retracted; ovipositor sheath just about as long

as abdomen, the ovipositor weakly decurved at apex.

Black; clypeus entirely black; mandibles black or

blackish; palpi piceous; antennae brownish black;

legs yellowish brown, the hind coxae largely black, the

hind femora broadly darkened apically, the fore- and

middle femora darkened along dorsal edges, the hind

tibiae basally and apically and all the tarsi dark,

tegulae and wing bases blackish; wings slightly infumated; dorsum of abdomen deep black, the venter

piceous to black.

MALE .—Unknown.

HOLOTYPE.—USNM 70151.

DISTRIBUTION.—Known only from two females (one

the holotype) collected at Hood River Rapids, Mt.

Hood, Oregon, 3000 feet, on 31 July 1921, by A. L.

Melander.

Orgilus comptanae, new species

FIGURES 8, 8a, 86

This species is readily distinguished by its largely

reddish-yellow color from the other species that belong

in the group in which the head is very long and the

face is unusually protuberant.

FEMALE.—Length around 4 mm. Head slightly

narrower than thorax, higher than wide in front view

and fourth-fifths as long as broad in dorsal view,

deeply excavated behind; face protruding strongly, its

straight-line width hardly equal to eye height, weakly

punctate or shagreened medially; clypeus weakly

separated from face, smooth, as long as malar space,

which is slightly more than one-third as long as eye

height; anterior ten tonal pits a little below level of

lower eye margins; cheeks smooth and shiny except at

the extreme lower margins where they are a little

alutaceous; temples and cheeks bulging slightly, the

temples impunctate and about 0.75 as wide as eyes;

ocellocular line about one and one-half times as long

as diameter of an ocellus; antennae 31- or 32-segmented in the available specimens.

Thorax slender; mesoscutum shiny, not distinctly

punctate; notauli sharply impressed, foveolate; scutellar sulcus very broad and deep; propodeum granulose

or very finely rugulose and rather mat; side of pronotum largely rugulose but finely granulose anteriorly;

mesopleuron smooth and polished, the longitudinal

furrow finely foveolate; metapleuron coriaceous and

somewhat dull. Hind coxa about two-thirds as long as

hind femur, finely granulose or coriaceous and rather

dull above and on outer side; hind femur less than 4.5

times as long as wide; longer calcarium of hind tibia

more than half as long as metatarsus; tarsal claws

simple. Stigma very nearly as long as radial cell on

wing margin; second abscissa of radius on a line with

intercubitus; stub of third abscissa of cubitus longer

than second abscissa; nervulus a little postfurcal; hind

wing about five times as long as wide; lower abscissa of

basella a little more than half as long as mediella and

more than half as long as maximum width of hind

wing.

Abdomen a little longer than thorax; first tergite

hardly one and one-half times as long as wide at apex,

finely rugulose except basally where it is smooth;

second tergite nearly as long as wide at base, almost

entirely finely rugulose; third tergite confluently

punctate on basal half or more, smooth along lateral

margins and posteriorly; the remaining tergites smooth

and shiny; second suture impressed but very fine;

ovipositor sheath nearly as long as distance from base

of scutellum to end of abdomen.

Reddish testaceous; scape black above; antenna 1

flagellum darkened apically; palpi blackish, also

metanotum, hind tibiae apically and all tarsi; wings a

little infumated.

MALE.—Essentially like the female but the abdominal sculpture usually a little weaker, and sometimes the

body more extensively darkened.

HOLOTYPE.—USNM 70152.

DISTRIBUTION.—The type-series consists of the following: Female holotype reared from Ancylis comptana Froelich at Lockport, New York, 16 July 1929, by
28

D. M. Daniel; a male paratype, also from A. comptana, reared by J. J. Davis at Moorestown, New Jersey,

in May 1924; 2 males, Bridgeville, Delaware, 1932,

from A. comptana; 1 male from Moorestown, New

Jersey, "ex A. comptana infested leaves of strawberry";

1 female, Salisbury, Maryland, ex A. comptana; and

field-collected specimens from localities in Quebec,

New York, Pennsylvania, New Jersey, Maryland, Virginia, North Carolina, Illinois, Mississippi, Georgia,

and Florida.

Orgilus conflictanae, new species

Although this is exceedingly like burksi, new species, it

differs as pointed out in the key (couplet 108).

FEMALE.—Length about 3.2 mm. Head a little

wider than thorax, in dorsal view 0.65 as long as wide;

minimum width of face equal- to eye height; face

minutely shagreened and rather mat on upper part,

very shiny and with scattered shallow punctures on

lower part; clypeus almost impunctate, very shiny;

malar space only very slightly more than 0.4 as long as

eye height, hardly longer than clypeus and a little

shorter than the longest segment of maxillary palpus,

finely shagreened; cheeks largely smooth and shiny,

finely shagreened and somewhat mat on lower third;

temples smooth and polished, at mideye point 0.8 as

wide as eyes; occiput carinately margined only at the'

sides; vertex smooth and polished; ocellocular line

slightly more than twice as long as diameter of an

ocellus; antennae of holotype broken, 26 segments remaining, the last very nearly as wide as long.

Mesoscutum very shiny, in part faintly alutaceous,

the lobes weakly convex, notauli rather shallow and

finely foveolate; disc of scutellum convex, faintly alutaceous; propodeum rugose, the stubs of the two median apical longitudinal carinae short but prominent,

the lateral ones not distinct; side of pronotum granulose anteriorly, rugulose in the impression, nearly

smooth below the upper margin; mesopleuron smooth

and polished, the longitudinal furrow complete and

foveolate; metapleuron largely smooth and very

shiny but rugulose at the lower posterior margin.

Hind coxa slightly more than half as long as hind

femur, finely granulose and dull above and on outer

side; hind femur 4.5 times as long as broad; tarsal

claws simple. Radial cell on wing margin as long

as stigma; second abscissa of radius on a line with intercubitus; stub of third abscissa of cubitus fully as long

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

as second abscissa; nervulus postfurcal by one-third its

length; hind wing about five times as long as wide;

lower abscissa of basella a little more than half as long

as mediella or maximum width of hind wing.

Abdomen at widest point about as wide as thorax;

first tergite nearly 1.5 times as long as wide at apex,

largely longitudinally rugulose, smooth and polished at

extreme base and medially at apex, the dorsal keels

indistinct; second tergite about as long as broad at base,

smooth and polished like the following tergites; second

suture very faint; ovipositor sheath barely longer than

abdomen.

Black: clypeus entirely black; palpi dark; antennae

brownish yellow on basal two-thirds, the scape slightly

darker, the apical part of the flagellum blackish; legs

testaceous, hind coxae black except at extreme apices

below, hind femora piceous on apical two-thirds, reddish basally; tegulae and wing bases yellow; wings a

little infumated.

MALE.—Unknown.

HOLOTYPE.—USNM 70153.

DISTRIBUTION.—Known only from the holotype female, which was reared from Choristoneura conflictana (Walker) at "Muddy District" in the Gunnison

National Forest, Colorado, 31 January 1958, by B. H.

Wilford, under Hopkins US no. 34220-L42.

Orgilus consuetus, new species

This is very similar to cuneatus (Provancher) and

indagator Muesebeck. From the former it differs in its

largely finely shagreened and subopaque mesonotum,

shagreened or coriaceous mesopleura, and shorter ovipositor, and from the latter in its less extensively sculptured abdomen, more uniformly infumated wings,

stouter female antennae and slightly longer ovipositor.

FEMALE.—Length about 3.2 mm. Head slightly

wider than thorax, in dorsal view about 0.6 as long as

broad; face slightly wider than eye height, finely shagreened and rather mat; clypeus smooth, with only a

few scattered punctures; malar space finely granulose

and mat, barely longer than clypeus and about 0.42 as

long as eye height, also about as long as longest segment

of maxillary palpus; cheeks shagreened and mat;

temples at mideye point 0.75 as wide as eyes, smooth

and polished except adjacent to occipital carina where

they are minutely shagreened; occiput carinately margined only at the sides; vertex weakly alutaceous or

minutely shagreened; ocellocular line a little more than
NUMBER 30 29

twice as long as diameter of an ocellus; antennae 29-

segmented in the holotype, 28-segmented in the only

para type, the 8 or 10 preapical segments slightly wider

than long.

Middle lobe of mesoscutum finely shagreened and

subopaque, also the parts of the lateral lobes than are

adjacent to the notauli; notauli sharply impressed, very

narrow, finely punctate anteriorly and foveolate posteriorly, meeting well before apex of scutum in a narrow rugulose area; disc of scutellum shiny but weakly

shagreened; propodeum dorsally finely granulose and

dull, with some irregular rugulae, the posterior face

rather abruptly declivous and with five shiny and

weakly roughened apical areas that are separated by

prominent stubs of longitudinal carinae, which arise

from the posterior margin and extend to the top of the

posterior face; side of pronotum rugulose in the impression, granulose anteriorly and minutely shagreened

above; mesopleuron largely coriaceous or minutely

shagreened, more noticeably so below than above the

foveolate longitudinal furrow; metapleuron granulose

and dull, rugulose at lower posterior margin. Hind

coxa 0.6 as long as hind femur, finely granulose above

and on outer side; hind femur about 4.5 times as long

as wide; inner calcarium of hind tibia just longer than

half the metatarsus; tarsal claws simple. Radial cell on

wing margin about as long as stigma; second abscissa of

radius on a line with intercubitus; stub of third abscissa of cubitus at least as long as second abscissa;

nervulus very slightly postfurcal; hind wing fives times

as long as wide; lower abscissa of basella nearly or

quite half as long as maximum width of hind wing.

Abdomen rather slender; first tergite 1.5 times as

long as wide at apex, finely and closely rugulose, more

or less longitudinally so laterally; second tergite barely

broader at base than long, finely confluently punctate;

third tergite shiny and very weakly shagreened on basal

half; remainder of abdomen smooth and polished; second suture fine but sharply impressed; ovipositor sheath

about as long as propodeum and abdomen combined.

Black; clypeus except basally and the mandibles

testaceous; palpi a little darkened, at least basally; antennae yellow, darkened apically; tegulae and wing

bases yellow; wings slightly infumated; legs testaceous,

the hind coxae weakly darkened basally; hind femora

somewhat darkened apically and on inner sides; hind

tibiae weakly infuscated apically; the basal abdominal

sternites yellow.

MALE.—Not represented in the type material.

HOLOTYPE.—USNM 70154.

DISTRIBUTION.—The type-series consists of only the

holotype female and one female paratype collected at

Lost River State Park, Hardy County, West Virginia,

in July 1955, by K. V. Krombein. Other specimens

that seem to be this species are from Ontario, Maryland, North Carolina, and Florida. The single Florida

specimen is labeled as having been reared from Laspeyresia caryana (Fitch).

Orgilus coracinus, new species

Structurally this species seems to be most similar to

medicaginis, new species, but the female is much

darker, even all the coxae and the entire clypeus being

black; in addition, the temples are hardly as broad as

in medicaginis and are more extensively sculptured,

the metapleuron is smoother and the vertex is more

sculptured.

FEMALE.—Length 4.5 mm. Head slightly wider

than thorax, in dorsal view 1.5 times as broad as long;

face 1.25 times as wide as eye height, rugulose above

and laterally, weakly punctate below and medially and

very shiny; clypeus rather closely but minutely punctate ; malar space longer than clypeus and 0.6 as long as

eye height, and granular and dull like the cheeks;

temples about 0.8 as wide as eyes, receding a little,

broadly punctate granulose along the occipital carina,

smooth and polished adjacent to the eyes; occiput

margined only at the sides, rather sharply punctate

immediately below the ocelli; vertex between ocelli

and eyes rugulose punctate; ocellocular line more than

twice as long as diameter of an ocellus; antennae of

holotype 32-segmented, some segments of apical fourth

about as broad as long.

Mesoscutum very shiny, the middle lobe weakly

punctate and the lateral lobes with some very shallow

punctures along the notauli; notauli sharply impressed

and strongly foveolate, a few confluent punctures at

their junction; disc of scutellum convex, shiny, with

a few faint punctures; propodeum sloping roundly

from base to apex without defined dorsal and posterior

faces, rugose, the stubs of the longitudinal carinae that

arise from posterior margin prominent but short; side

of pronotum largely strongly rugulose, more finely

so anteriorly and nearly smooth at the upper margin; mesopleuron largely smooth and polished, the

longitudinal furrow strongly foveolate, a large area

anteriorly below the furrow rather finely punctate;
30

metapleuron rugulose posteriorly below, smooth and

polished on the upper anterior part. Hind coxa

rugulose above at base, smooth and shiny on the

outer side with only shallow setigerous punctures there;

hind femur more than 5 times as long as wide and

2.2 times as long as hind coxa; inner calcarium of

hind tibia slightly more than half as long as metatarsus;

tarsal claws simple. Radial cell on wing margin a little

longer than stigma; second abscissa of radius on a line

with intercubitus; stub of third abscissa of cubitus

fully as long as second abscissa; nervulus postfurcal by

one-third its length; hind wing about 4.3 times as long

as wide; lower abscissa of basella not longer than

nervellus and only about one-third as long as mediella.

Abdomen a little narrower than thorax; first tergite

1.5 times as long as broad at apex, finely longitudinally

rugulose, the basal dorsal keels not developed; second

tergite about as long as broad at base, smooth and polished except for a small faintly sculptured area near

base each side of the middle; third tergite not quite

two-thirds as long as second, the separating suture

very weak; third and following tergites smooth and

polished; ovipositor sheath as long as propodeum and

abdomen combined.

Deep black; clypeus entirely black; mandibles reddish; antennae black; also tegulae and wing bases

black; wings only faintly infumated; all coxae and

basal trochanters black; all femora with dorsal edges

black or blackish, the tibiae and tarsi more or less

infuscated; wings a little smoky.

MALE .—Unknown.

HOLOTYPE.—USNM 70155.

DISTRIBUTION.—Known only from the holotype

female collected by D. D. Lindsdale at Ruby Lake.

Inyo County, California, 13 August 1957.

Orgilus cristatus, new species

Although very similar to lunaris, new species, this

form may be readily distinguished by the presence of

a short but high, median longitudinal keel at the base

of the propodeum, by its closely sculptured and dull

cheeks and by its black tegulae.

FEMALE.—Length about 4.4 mm. Head hardly

wider than thorax at tegulae, in dorsal view fully 0.7

as long as wide and strongly excavated behind; face

about 1.15 times as wide as eye height, closely rugulose

punctate; clypeus very strongly convex and closely

punctate; malar space barely longer than clypeus,

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

about 0.45 as long as eye height, and finely granulose

and dull; cheeks entirely granulose and dull; temples very nearly as wide as eyes, flat, barely receding,

and broadly shagreened along occipital carina although smooth and shiny adjacent to eyes; occipital

carina very prominent at the sides; ocellocular line less

than twice as long as diameter of an ocellus; antennae

of holotype incomplete, 29 segments remaining, segments 20-25 fully as broad as long.

Thorax stout; mesoscutum smooth and shiny, the

middle lobe with very shallow but closely placed punctures anteriorly; notauli finely foveolate, meeting in

a strongly rugulose triangular area at apex of scutum;

prescutellar sulcus very broad and deep and strongly

foveate; disc of scutellum convex, smooth and shining; propodeum coarsely rugose, and with a short but

very prominent median longitudinal keel at base, the

stubs of the apical carinae prominent and extending

more than one-third the distance toward base of propodeum; side of pronotum finely rugulose in the impression, rather broadly smooth at upper margin and

finely granulose on a small area at anterior margin;

mesopleuron smooth and polished, the longitudinal

furrow nearly straight and completely finely foveolate;

metapleuron rugose on lower half, smooth and shiny

above in the basal angle. Hind coxa half as long as hind

femur, rugulose on upper edge and on upper part of

outer side, smooth below; hind femur 5.5 times as long

as wide; inner calcarium of hind tibia fully half as long

as metatarsus; tarsal claws simple. Stigma about as

long as radial cell on wing margin, very narrow, much

narrower than length of first abscissa of radius; second

abscissa of radius on a line with intercubitus; stub of

third abscissa of cubitus as long as second abscissa;

nervulus postfurcal by about one-third its length; hind

wing not more than four times as long as wide; lower

abscissa of basella hardly as long as nervellus and only

one-third as long as mediella.

Abdomen a little narrower than thorax; first tergite about 1.2 times as long as wide at apex, closely

longitudinally rugulose, the dorsal keels weak but distinct to beyond spiracles; second tergite large, as long

as broad at base and closely, finely longitudinally rugulose except narrowly at apex where it is smooth; second suture fine but sharply impressed; third tergite

largely smooth and polished but with a small, finely

rugulose area on the basal middle; remainder of abdomen smooth and polished, the segments after the

fourth almost completely retracted; ovipositor sheath
NUMBER 3 0 31

nearly or quite as long as propodeum and abdomen

combined.

Black; clypeus and palpi black; mandibles reddish;

antennae black, the flagellum a little brownish on the

underside toward base; tegulae black, wing bases piceous; wings distinctly infumated, rather more strongly

so apically than basally; fore- and middle coxae yellowish brown; hind coxae black, brownish at apices; basal

trochanters of all legs darkened, also the upper edges

of the fore- and middle femora and the hind femora

on the inner side; hind tibiae apically and all tarsi

more or less darkened; abdomen completely black

above and below.

MALE.—Unknown.

HOLOTYPE.—USNM 70156.

DISTRIBUTION.—Known only from the holotype

female, which was taken at Sagehen Creek, near Hobart Mills, Nevada County, California, 16 July 1964,

by M. E. Irwin.

Orgilus cuneatus (Provancher)

Blacus cuneatus Provancher, 1888, p. 383.

Orgilus cuneatus (Provancher).—Muesebeck and Walkley,

1951, p. 111.

This species belongs in the indagator Muesebeck complex, but it seems to differ from indagator in having

a smoother and more shining mesonotum and a long

ovipositor. The holotype female is a very small specimen, only about 2.5 mm long. I have seen only one

other specimen that seems to belong here. It is a female

from Houston, Delaware, in the United States

National Museum collection. It agrees in size and

in what appear to be the most essential characters as

described in notes made on examination of the type,

but the abdomen is darker, completely lacking the pale

markings on the first and second tergites of the holotype. Following is a redescription of the type specimen.

Head a little wider than thorax, in dorsal view about

0.6 as long as wide; face minutely shagreened and

mat, at narrowest point barely wider than eye height,

largely minutely shagreened; malar space a little more

than 0.4 as long as eye height; cheeks shagreened and

rather mat; temples about 0.6 as wide as eyes, smooth

and shiny; antennae of holotype broken, 23 segments

remaining, the apical segment a little broader than

long (the female from Houston, Delaware, has 28-

segmented antennae, with some of the preapical segments of the flagellum at least as wide as long).

i356-598 O—69 3

Mesoscutum largely smooth, with some minute

setigerous punctures; notauli sharply impressed, finely

foveolate; propodeum largely granulose; side of pronotum granulose or finely rugulose; mesopleuron

smooth and shiny, the longitudinal furrow nearly

straight and finely foveolate; metapleuron finely shagreened, somewhat rugulose at lower margin. Hind

coxa shagreened; inner calcarium of hind tibia a little

more than half as long as metatarsus; tarsal claws

simple. Radial cell on wing margin as long as stigma;

second abscissa of radius on a line with intercubitus;

stub of third abscissa of cubitus a little longer than

second abscissa; nervulus very slightly postfurcal; hind

wing about 5 times as long as wide; lower abscissa

of basella much longer than nervellus, a little more

than half as long as mediella and more than half as

long as maximum width of hind wing.

Abdomen slender; first tergite about 1.5 times as

long as wide at apex, its surface minutely granulose,

the dorsal keels not distinct; second tergite nearly as

long as wide at base, finely shagreened; third tergite

shagreened basally; remainder of abdomen smooth

and polished; ovipositor sheath about 1.4 times as

long as abdomen.

Black; antennae yellow, darkened apically; palpi

piceous; tegulae yellow; wings faintly smoky; legs

yellow, the hind coxae slightly darkened at bases above,

also apices of hind femora and of hind tibiae and the

hind tarsi more or less darkened; abdomen with apical

corners of first tergite yellowish and lateral margins

of second tergite more or less yellowish.

HOLOTYPE.—In the Quebec Provincial Museum

collection, Laval University, Sainte Foy, Quebec.

DISTRIBUTION.—The holotype is from Cap Rouge,

Quebec.

Orgilus detectijormis Viereck

FIGURES 17, 50

Orgilus detectiformis Viereck, 1917, p. 226.

Although the holotype is a male I believe I have

correctly identified the female. The male paratype is

a different, apparently undescribed, species. Orgilus

detectiformis somewhat resembles clasmopalpi, new

species, but may be distinguished from it as indicated

in the description of that species. It seems to be even

more similar to boharti, new species, from which it

differs principally in the sculpture of the head and
32

mesopleuron and in certain other details mentioned

in the description of boharti.

FEMALE.—Length around 4 mm. Head barely or

not wider than thorax, in dorsal view about 0.55 as

long as broad, weakly excavated behind; face about

1.25 times as wide as eye height, weakly but closely

punctate, finely granulose or rugulose on upper third;

malar space longer than clypeus and half as long as

eye height, finely granulose and subopaque like the

cheeks; temples receding a little, about 0.8 as wide as

eyes, a little shagreened along occiptal carina, smooth

and polished adjacent to eyes; occipital carina narrowly interrupted medially; ocellocular line more than

twice as long as diameter of an ocellus; antennae normally 29- to 33-segmented, some of the preapical segments slightly wider than long.

Mesoscutum smooth and shiny, not distinctly

punctate; notauli sharply impressed and finely foveolate; propodeum rugulose, with a small polished area

each side at base, and the posterior declivity with

prominent stubs of longitudinal carinae setting off

five apical areas; side of pronotum finely granulose

along anterior margin, elsewhere rugulose except along

upper margin where it is nearly smooth; mesopleuron

smooth except for the foveolate longitudinal furrow

and a few scattered punctures below this, especially

anteriorly; metapleuron largely rugulose but weakly

so in the upper anterior angle. Hind coxa about half

as long as hind femur, longitudinally rugulose above

toward base, shiny and weakly sculptured on lower

part of outer side; hind femur around 4.5 times as

long as wide; inner calcarium of hind tibia barely

more than half as long as metatarsus; tarsal claws

simple. Radial cell on wing margin about as long as

stigma; second abscissa of radius on a line with intercubitus; stub of third abscissa of cubitus at least as

long as second abscissa; nervulus usually only very

slightly postfurcal; hind wing little more than four

times as long as wide; lower abscissa of basella usually

subequal in length with nervellus, sometimes slightly

longer but less than half as long as mediella and only

one-third as long as maximum width of hind wing.

Abdomen rather stout; first tergite about 1.5 times as

long as wide at apex, irregularly rugulose over most

of its surface, the spiracles about twice as far from

apex as from base, the basal dorsal keels distinct but

weak; second tergite very nearly as long as broad at

base, usually parallel-sided, weakly punctate or alutaceous over more or less of its surface but especially

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

on basal half medially, usually polished laterally and

posteriorly; third and following tergites smooth and

polished; ovipositor sheath about as long as distance

from base of scutellum to end of abdomen.

Black; palpi piceous; clypeus more or less ferruginous; mandibles ferruginous; antennae usually reddish yellow on basal half, darkened apically; legs

largely brownish yellow, the hind femur darkened inwardly and along upper edge, also the hind tibia and

all the tarsi more or less darkened; tegulae usually yellowish or brownish yellow, the wing bases always pale;

wings uniformly slightly infumated; abdomen with first

tergite dark, the remainder usually more or less testaceous to ferruginous but sometimes largely brownish

to piceous; venter of abdomen largely pale.

MALE.—Essentially like the female but darker; the

hind coxae usually largely black; the tegulae usually

black or piceous; and the abdomen sometimes entirely

black.

HOLOTYPE.—USNM 66256.

DISTRIBUTION.—The holotype is from Connecticut.

Specimens I have identified as this species are from

Massachusetts, New York, Pennsylvania, Maryland,

District of Columbia, North Carolina, Georgia, Indiana, Illinois, Wisconsin, South Dakota, Iowa, Ontario,

Quebec, and New Brunswick. Two specimens from

Indiana are labeled as having been reared from larvae

of Crambus sp.

Orgilus delectus Provancher

Orgilus detect us Provancher, 1886, p. 139.

This species seems to be most similar to solidus, new

species, but it differs in its relatively longer malar

space, its shiny and very weakly punctate face and its

somewhat longer ovipositor.

FEMALE.—Length about 3.5 mm. Head in dorsal

view about 0.6 as long as wide; face only slightly wider

than eye height, shiny, with scattered setigerous punctures ; malar space about 0.45 as long as eye height and

a little longer than clypeus; temples rather strongly

receding, smooth and shiny; antennae of holotype 29-

segmented, some of the preapical segments quadrate.

Mesoscutum shiny, hairy, indistinctly punctate; propodeum finely rugulose except on the basal third

where it is nearly smooth; mesopleuron smooth and

shiny, the longitudinal furrow strongly foveolate; metapleuron smooth and shiny on the upper part, changing to rugose below. Hind coxa a little rugulose above
NUMBER 3 0 33

and on upper part of outer side; inner calcarium of

hind tibia a little more than half as long as metatarsus.

Radial cell on wing margin about as long as stigma;

second abscissa of radius on a line with intercubitus;

nervulus a little postfurcal; lower abscissa of basella

a little longer than nervellus but less than half as long

as mediella.

Abdomen moderately stout; first tergite about 0.75

as wide at apex as long, finely rugulose over most

of its surface; second tergite about 1.25 times as broad

at base as long, confluently punctate on the basal twothirds, smooth and polished apically and along the

lateral margins; remainder of abdomen smooth and

polished; ovipositor sheath fully as long as propodeum

and abdomen combined.

Black; antennae darkened except for the basal

flagellar segments; legs yellowish, the hind coxae black

at their bases, the trochanters, femora, and tibiae

shaded with brown, the tarsi dark; tegulae blackish,

wing bases yellowish; wings slightly infumated.

MALE.—Unknown.

HOLOTYPE.—In the Quebec Provincial Museum collection, which is maintained at Laval University,

Sainte Foy, Quebec.

DISTRIBUTION.—Known only from the female holotype, which was taken at Ottawa, Canada. I have seen

no other specimen that I could confidently identify as

this species.

Orgilus dioryctriae Gahan

FIGURES 12, 33

Orgilus dioryctriae Gahan, 1919, p. 121.

This species is distinguished from related species by its

relatively narrow head, nonreceding temples and

cheeks, unusually smooth apex of propodeum and

black legs.

FEMALE.—Length ranging from 3.5 to 4.5 mm in

the available material. Head hardly as wide as thorax

at tegulae, in dorsal view about 0.6 as long as wide,

strongly excavated behind; occipital carina prominent

and narrowly interrupted medially; face 1.25 times as

wide as eye height, coarsely punctate to rugulose punctate; clypeus with scattered punctures; malar space

longer than clypeus and at least 0.45 as long as eye

height; cheeks broad, flaring, shagreened; temples

largely smooth, 0.75 as wide as eyes, flat and not at

all receding, the occipital carina on each side in line

with outer eye margin; ocellocular line about 1.5 times

as long as diameter of an ocellus; antennae 30- to 32-

segmented in the available specimens, some segments

in apical fifth of flagellum as broad as long.

Thorax stout; notauli narrow, finely foveolate, and

meeting in a very acute angle just before apex of

scutum; mesoscutum very shiny and with numerous

minute and shallow punctures, the lateral lobes nearly

smooth apically and laterally; disc of scutellum minutely punctate; propodeum finely rugulose punctate,

narrowly smooth at base and broadly smooth apically,

especially at the middle, the apical smooth area sometimes extending forward medially to the middle of the

propodeum and occasionally even reaching the transverse basal smooth area, the usual stubs of carinae that

arise at the posterior margin and set of several apical

areas very weak, the median ones wanting; mesosulcus

very fine and shallow, finely punctate; side of pronotum largely rugulose but broadly smooth along

upper margin; mesopleuron smooth and polished,

the longitudinal furrow slightly sinuate and finely

foveolate; metapleuron rugulose along the lower

posterior margin, smooth and shiny elsewhere

although often with some very shallow punctures.

Hind coxa finely rugulose above toward base, about

0.6 as long as hind femur, which is hardly four times

as long as broad; longer calcarium of hind tibia

more than half as long as metatarsus; tarsal claws

simple. Radial cell on wing margin about as long as

stigma; metacarpus extending barely beyond apex of

radial cell; second abscissa of radius on a line with

intercubitus; third abscissa of cubitus at least as long as

second abscissa; nervulus usually postfurcal by about

half its length; hind wing about 4.2 times as long as

wide; lower abscissa of basella subequal in length with

nervellus or slightly longer, much less than half as long

as mediella.

Abdomen rather stout; first tergite usually less than

1.3 times as long as broad at apex, finely rugulose,

smooth medially at base and apex; second tergite

usually about 1.2 times as broad at base as long, largely

smooth, sometimes weakly punctate each side of the

middle on basal two-thirds, sometimes only more or

less shagreened; second suture finely impressed; third

and following tergites smooth and polished; ovipositor

sheath about as long as thorax and abdomen combined.

Black; basal segments of antennal flagellum brownish, at least below; clypeus entirely black; mandibles

testaceous; palpi dark; legs black or blackish, the apices
34

of the forefemora and the foretibiae brownish yellow;

tegulae and wing bases black; wings subhyaline.

MALE.—The single available male is even darker

than the females, the antennae, mandibles, and foretibiae being entirely black.

HOLOTYPE.—USNM 21620.

DISTRIBUTION.—The type-series was reared from

Dioryctria xanthaenobares Dyar at Patrick's Creek,

California. I have also seen 2 females from Sequoia

National Park, California, recorded as having been

reared from Coleotechnites rnilleri (Busck) on lodgepole pine, 21 July 1953, by B. E. Wichman and a single

female from Virginia Dale, Colorado, labeled as reared

from Choristoneura lambertiana ponderosana Obraztsov, in July 1965. The specimens from C. milleri have

the second tergite more strongly and more completely

sculptured than the other available specimens but they

seem to be the same species.

Orgilus discrepans, new species

FIGURE 25

Structurally this is extremely similar to lateralis (Cresson), although the thoracic pleura and hind coxae are

smoother than they usually are in lateralis, and the inner calcarium of the hind tibia is less than half as long

as the metatarsus; but it is much darker than lateralis,

the thorax and abdomen being entirely black and the

hind coxae being black, at least basally.

FEMALE.—Length about 3 mm. Head barely wider

than thorax, in dorsal view twice as broad as long; face

smooth and shiny, with only a little extremely weak

punctation, its width just about equal to the eye height ;

anterior tentorial pits on a line with lower eye margins; malar space less than one-third as long as eye

height and shorter than longest segment of maxillary

palpus; cheeks and lower temples finely shagreened

and dull; temples gradually receding, just about half

as wide as eyes; upper temples, vertex, and frons smooth

and shiny; occipital carina complete; ocellocular line

just about twice as long as diameter of an ocellus;

antennae, in the only known female in which they are

complete, 27-segmented, even the shortest flagellar

segments a little longer than broad, the apical segment

with a very short terminal spicule.

Mesoscutum very smooth and shiny, at most with

some shallow punctures on middle lobe and adjacent to

notauli on lateral lobes, in the holotype almost impunctate; propodeum weakly rugulose punctate, stubs

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

of apical carinae indistinct; side of pronotum, mesopleuron and metapleuron smooth and very shiny, the

mesopleural furrow strongly sinuate and finely foveolate. Hind coxa a little roughened at base above, about

two-thirds as long as hind femur, which is less than four

times as long as broad; longer calcarium of hind tibia

less than half as long as metatarsus; tarsal claw with a

prominent subbasal tooth. Stigma about three-fourths

as long as radial cell on wing margin; second abscissa of

radius not nearly on a line with intercubitus; third

abscissa of cubitus punctiform; nervulus postfurcal,

usually by about half its length; hind wing less than

five times as long as wide; lower abscissa of basella

fully half as long as mediella and at least half as long

as maximum width of hind wing.

Abdomen very shiny; first tergite at least one and

one-half times as long as broad at apex, finely longitudinally rugulose, the distance from the spiracles to

the base about equal to the distance between them;

second tergite about 1.3 times as broad at base as long,

largely rugulose punctate but smooth laterally and at

apex, the suturiform articulation sharply impressed;

third tergite finely rugulose punctate in a transverse

band a little beyond base, the extreme base, and the

apex broadly, smooth and polished; the following tergites smooth and polished or with a few weak punctures; ovipositor sheath about as long as the distance

from the tegulae to the end of the abdomen.

Black; head yellowish brown, with frons, vertex, and

occiput more or less darkened; papli pale; antennae

dark brown, the scape and sometimes more or less

of the flagellum paler beneath; tegulae and wing

bases pale yellow; wings clear hyaline; legs yellow,

the hind coxae blackish except apically, the hind

femora at apices and the tarsi somewhat darkened; the

hind tibia with a whitish annulus at base, otherwise

brownish but with the apex darkened and an indefinite

dark spot at the end of the basal white annulus.

MALE.—Like the female in most essential details

but with the second and following tergites entirely

smooth.

HOLOTYPE.—USNM 70157.

DISTRIBUTION.—Known only from the type-series

that consists of the female holotype from Mormon

Lake, Arizona, 7000 feet, taken in July 1956 by

F. Werner, and a female paratype and a male paratype collected in the Graham Mts., Arizona, 7500

feet, 8 July 1957.
NUMBER 3 0 35

Orgilus disparilis, new species

FIGURE 36

From immarginatus, new species, which this species

resembles in its unusually large eyes and in the fine

granulose sculpture of the vertex and temples, it is

immediately distinguished by having the occiput

carinately margined at the sides and by its coriaceous

meso- and metapleura.

FEMALE.—Length about 4 mm. Head a little

wider than thorax, wider than high in front view,

twice as wide as long in dorsal view, and nearly flat

behind; face very finely punctate, its width less than

eye height; clypeus not separated from face medially;

anterior tentorial pits just above level of lower eye

margins; malar space only half as long as longest segment of maxillary palpus and hardly one-sixth the eye

height; temples very narrow, strongly receding and,

together with cheeks and vertex, finely granulose and

mat; occipital carina weak and incomplete but distinct

at the sides, ocellocular line barely longer than diameter of an ocellus; antennae of holotype incomplete,

those of a female paratype 38-segmented, conspicuously thinner apically, all flagellar segments longer

than broad, the terminal segment provided with a

short stout apical spicule.

Mesoscutum without a sculptured area at junction

of notauli, which are weakly foveolate or punctate;

scutellum flat; propodeum virtually horizontal, only

slightly declivous at apex, finely granulose and mat;

side of pronotum minutely granulose, very weakly so

above the impression; mesopleuron and metapleuron

coriaceous, the former weakly so and shining, the latter

rather dull; the longitudinal furrow of mesopleuron

straight, not distintly foveolate. Hind coxa at least

0.75 as long as hind femur, finely shagreened; hind

femur somewhat compressed and only about three

times as long as broad; inner spur of hind tibia much

more than half as long at metatarsus; tarsal claw without a subbasal tooth. Stigma only 0.75 as long as

radial cell on wing margin; stub of third abscissa of

cubitus not more than one-third as long as second

abscissa; nervulus postfurcal by nearly half its length;

hind wing about 4.3 times as long as wide; lower

abscissa of basella shorter than or subequal to nervellus

and much less than half as long as mediella.

Abdomen hardly as long as thorax; first tergite

only a little longer than broad at apex, delicately

coriaceous; second tergite twice as broad as long and,

together with the third, sculptured like the first although even more weakly; suture between second and

third tergites distinct; fourth and following tergites

smooth; ovipositor sheath about as long as abdomen,

conspicuously hairy.

Ferruginous; palpi yellow; stemmaticum black; legs

concolorous with the body except that the hind tibia

is pale yellow at extreme base and has a dark subbasal annulus, and the hind tarsus is somewhat

darkened; tegulae and wing bases testaceous to ferruginous; wings clear hyaline; apical abdominal tergites more or less darkened.

MALE.—Like the female in essential particulars;

antennae 37-segmented.

HOLOTYPE.—USNM 70158.

DISTRIBUTION.—-Known only from the type-series

comprised of the following: Holotype female, Gainesville, Florida, 13 May 1962, F. W. Mead; paratype

male, Levy County, Florida, 6 May 1955, F. W. Mead;

paratype female, Washington, D.C., 24 June 1915,

V. A. Roberts, and a second paratype female, Lyme,

Connecticut, 25 July 1918, W. S. Fisher.

Orgilus dissident, new species

From tersus, new species, which it closely resembles

structurally, this form may be distinguished at once

by its black abdomen, and from dolosus, new species,

which is even more similar, by its more slender abdomen and smoother mesonotum and mesopleuron.

FEMALE.—Length 3.5 mm. Head a little wider

than thorax, in dorsal view 0.65 as long as wide; face

1.2 times as wide as eye height, finely punctate on an

alutaceous ground; malar space longer than clypeus

and fully half as long as eye height, granulose and

dull; cheeks also finely granulose and dull; temples

about 0.8 as wide as eyes, slightly receding, smooth

and polished adjacent to eyes but broadly shagreened

toward occipital margins; occipital carina narrowly

interrupted medially; ocelli small, the ocellocular line

three times as long as diameter of an ocellus; vertex

smooth and shiny; antennae of holotype 31-segmented,

some segments in apical third of flagellum as wide as

long.

Mesoscutum shiny, and smooth except for some

very shallow punctures on the middle lobe and a few

on the lateral lobes near the notauli; notauli sharply

impressed and foveolate; disc of scutellum convex,

smooth, and shiny; propodeum dorsally rugulose ex-
36

cept for a smooth and polished transverse area each

side of the middle at base, the posterior declivity

largely shiny and with rather prominent stubs of longitudinal carinae setting off the apical areas; side of

pronotum closelv rugulose; mesopleuron smooth and

polished, the longitudinal furrow rather coarsely foveolate; metapleuron strongly rugose on posterior half,

finely granulose and subopaque in the basal angle.

Hind coxa rugulose on dorsal edge, finely granulose

or shagreened and somewhat dull on upper part of

outer side; hind femur nearly five times as long as wide

but not quite twice as long as hind coxa; inner calcarium of hind tibia slightly more than half as long as

metatarsus; tarsal claws simple. Radial cell on wing

margin as long as stigma, the latter not angled at origin

of radius; second abscissa of radius on a line with intercubitus; stub of third abscissa of cubitus fully as long

as second abscissa; nervulus a little postfurcal; hind

wing about 4.5 times as long as wide; lower abscissa of

basella slightly longer than nervellus but less than half

as long as mediella.

Abdomen slender, narrower than thorax, first tergite about 1.5 times as long as wide at apex, closely and

finely longitudinally rugulose, the spiracles twice as

far from apex as from base, the dorsal keels not developed ; second tergite about as long as broad at base,

parallel-sided, finely longitudinally rugulose punctate

on basal two-thirds except for the smooth and shiny

lateral margins; remainder of abdomen smooth and

shiny; the second suture very weak; ovipositor sheath

about as long as propodeum and abdomen combined.

Black; clypeus reddish yellow anteriorly; mandibles

yellow; palpi rather piceous; scape of antenna largely

dark but light brown below; flagellum brownish yellow

above as well as below on at least basal half, darkened

apically; tegulae and wing bases yellow, wings slightly

infumated; legs yellowish brown, the hind coxae basally and the hind tibiae apically a little darkened;

basal abdominal sternites yellow.

MALE.—Unknown.

HOLOTYPE.—USNM 70159.

DISTRIBUTION.—Known only from the type-series

consisting of three females: The holotype from Mt.

Katahdin, Maine, 5215 feet, collected 19 August 1902;

one paratype taken near Ithaca, New York, 14 July

1951, by J. C. Martin, and a second paratype collected

at Chatterton, Ontario, 6 June 1956, by Martin.

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Orgilus dolosus, new species

Although very similar to dissidens, new species, this

species may be readily distinguished by its stouter abdomen, with the second tergite wider than long and

not parallel-sided, and by the much stronger sculpture

of the mesonotum and mesopleuron.

FEMALE.—Length about 3.5 mm. Head very

slightly wider than thorax, in dorsal view 0.6 as long as

wide; face 1.25 times as wide as eye height, closely

and rather strongly punctate and subopaque; clypeus

more sparsely punctate and shiny; malar space longer

than clypeus and fully half as long as eye height, finely

granulose and dull; cheeks strongly shagreened and

mat; temples about 0.75 as wide as eyes, smooth and

polished adjacent to eyes, shagreened along occipital

carina; vertex finely granulose and dull between lateral

ocelli and eyes; occipital carina narrowly interrupted

medially; ocellocular line about two and one-half times

as long as diameter of an ocellus; antennae of holotype 32-segmented, a few of the preapical segments of

flagellum as wide as long.

Mesoscutum with the middle lobe finely rugulose

punctate and the spaces between the large, elongate

and shallow punctures more or less shagreened, the

lateral lobes similarly but much more weakly

sculptured; disc of scutellum with shallow punctures

and faint shagreening between the punctures; the propodeum rugose, the stubs of the longitudinal carinae

that arise from the posterior margin rather prominent

and setting off the apical areas; side of pronotum

strongly rugulose over most of its surface, granulose on

a narrowly triangular area at anterior margin and

very weakly rugulose and shiny just below upper

margin; mesopleuron with the longitudinal furrow

coarsely foveolate, the surface below it rugulose punctate and an area below the tegula strongly rugose,

also an elongate area beginning at the posterior margin

and extending for a distance along the upper edge

of the longitudinal furrow finely aciculate; metapleuron largely rugose, very coarsely so below and

posteriorly, and coarsely granulose and dull in the anterior upper angle. Hind coxa strongly granulose and

dull on outer and inner sides, weakly rugulose on dorsal

edge; hind femur twice as long as hind coxa and about

4.8 times as long as wide; inner calcarium of hind

tibia barely more than half as long as metatarsus;

tarsal claws simple. Radial cell on wing margin fully

as long as stigma; second abscissa of radius on a line

with intercubitus; stub of third abscissa of cubitus as
NUMBER 3 0 37

long as second abscissa; nervulus postfurcal by more

than one-third its length; hind wing a little more than

four times as long as wide; lower abscissa of basella

less than half as long as mediella.

Abdomen rather stout, at widest point as broad as

thorax; first tergite about 0.8 as wide at apex as long

and closely, finely rugulose, the spiracles less than twice

as far from apex as from base and about as far from

each other as from base; second tergite about 1.2

times as broad at base as long, finely rugulose punctate

on basal two-thirds except for broad polished lateral

margins and a polished median triangular area at

base, the apex of the tergite broadly polished; third and

following tergites smooth and polished; second suture

fine but sharply impressed; ovipositor sheath as long

as the distance from the base of the scutellum to the

apex of the abdomen.

Black; clypeus ferruginous anteriorly; mandibles yellow; palpi piceous; scape of antenna blackish above

and testaceous below, flagellum testaceous on more

than basal half below, on less than that above, remainder darkened; legs testaceous, hind coxae black

except at apices, hind femora a little darkened on

inner side and the tarsi very slightly darkened; tegulae

and wing bases yellow; wings slightly infumated; basal

abdominal sternites yellow.

MALE.—Unknown.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Known only from the holotype female that was collected by J. C. Martin, 22 May 1956,

at Chatterton, Ontario.

Orgilus dreisbachi, new species

FIGURE 48

This species is similar to rostratus, new species, but it

seems to be distinct, differing especially in having

hyaline or virtually hyaline wings and a definitely

shorter malar space.

FEMALE.—Length about 3.5 mm. Head not wider

than thorax at tegulae, strongly excavated behind,

rostriform, in front view higher than wide, in dorsal

view nearly twice as broad as long; temples rounded,

hardly receding, a little more than half as wide as eyes;

occiput finely carinately margined at the sides; anterior

tentorial pits large, well below the level of the lower

eye margins; malar space hardly half as long as eye

height; maxillary palpi shorter than height of head;

exposed part of galea broad and about as long as the

longest segment of the maxillary palpus; straight-line

width of face just about equal to eye height; face finely

and closely punctate medially, weakly so laterally;

malar space and cheeks smooth and shiny; ocellocular

line hardly twice as long as diameter of an ocellus;

antennae shorter than the body, 24- to 26-segmented

in the known specimens, several of the preapical

flagellar segments a little broader than long.

Mesoscutum with very shallow punctures and more

sparsely hairy than in rostratus; notauli sharply impressed and finely foveolate; disc of scutellum polished,

with only a few weak punctures; propodeum weakly

declivous, finely rugulose basally, more coarsely so

apically; side of pronotum rugose in the impression,

nearly smooth above it and granulose below; mesopleuron weakly punctate below the foveate longitudinal

furrow, smooth and polished above it; metapleuron

finely punctate anteriorly above, coarsely rugulose

punctate posteriorly below. Hind coxa largely smooth

except at base above and nearly two-thirds as long as

hind femur, which is barely three times as long as wide;

longer calcarium of hind tibia fully half as long as

metatarsus; tarsal claws simple. Stigma slightly shorter

than radial cell on wing margin; second abscissa of

radius on a line with intercubitus; stub of third abscissa

of cubitus a little longer than second abscissa, which is

less than half as long as intercubitus; nervulus interstitial or very weakly postfurcal; hind wing slightly

less than five times as long as wide; lower abscissa of

basella longer than nervellus but a little less than half

as long as mediella.

Abdomen a little longer, and in its widest part slightly

wider, than thorax; first tergite about as broad at apex

as long and with two prominent dorsal keels on basal

half, the area between these smooth at base and

rugulose apically, the parts laterad of the keels rugulose

to granulose; second tergite more than twice as broad

as long, entirely finely confluently punctate and more

or less dull; second suture sharply impressed but not

punctate; third, fourth, and fifth tergites sculptured

like the second but more finely, their apices narrowly

smooth; ovipositor sheath a little shorter than abdomen, the ovipositor decurved at apex.

Head brownish yellow; frons, vertex, and occiput

black; palpi piceous; antennae brownish black, the

scapes pale below; thorax brownish yellow varied

with black, especially on mesosternum, pleura, and

propodeum; sometimes thorax largely black; legs,

including all coxae, brownish yellow, apices of hind
38

femora and of hind tibiae and all the tarsi more or

less darkened; tegulae piceous or black; wings hyaline;

abdomen brownish yellow, the first, second, and third

tergites blackish medially.

MALE.—Antennae more slender than in the female

and 26- or 27-segmented in the available specimens.

HOLOTYPE.—USNM 70160.

DISTRIBUTION.—Known only from the short typeseries that consists of the following: The holotype

female and a paratype male collected at Thedford,

Nebraska, 31 August 1960, by R. R. Dreisbach; one

male, Alfalfa County, Oklahoma, 10 September 1949,

S. Coppock, Jr., and one male, Springerville, Arizona,

25 July 1956, "Gerhardt and Butler." The species is

named for the late R. R. Dreisbach, of Midland,

Michigan, for many years a tireless collector of

Hymenoptera, particularly in his home state.

Orgilus ejuncidus, new species

FIGURE 51

This species is distinguished by its very slender thorax

and abdomen, its unusually narrow hind wings, its

nearly horizontal propodeum and its rather strongly

infumated wings. It is rather strikingly different from

all other known Nearctic species.

FEMALE.—Length about 4 mm. Head noticeably

broader than thorax and in dorsal view 0.7 as long

as broad; face strongly convex, its straight-line width

barely greater than eye height, shiny, rather smooth

medially, finely shagreened laterally and with minute

setigerous punctures; clypeus smooth and shiny, with

very small scattered punctures; malar space about 0.4

as long as eye height; cheeks and temples smooth and

shiny, the latter rounded and slightly receding and

at mideye point more than three-fourths as wide as

eyes; occiput carinately margined only at the sides;

ocellocular line twice as long as diameter of an ocellus;

antennae 35-segmented in the holotype, some segments

in apical fourth of flagellum nearly as wide as long.

Thorax much deeper than wide; mesoscutum much

longer than wide, smooth and shiny; notauli unusually

shallow and finely foveolate, meeting well before apex

of scutum, the scutum not impressed or sculptured at

the junction of the notauli; disc of scutellum rather

elongate, smooth and shiny; propodeum horizontal,

a little declivous only at extreme apex, rugulose, with

a small polished area each side of the middle at base;

side of pronotum largely rugulose; mesopleuron

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

smooth and shiny and with a strongly foveolate longitudinal furrow; metapleuron rugulose, weakly so in

the anterior upper angle. Hind coxa at least 0.75 as

long as hind femur, the latter four times as long as

wide; inner calcarium of hind tibia hardly half as

long as metatarsus; tarsal claws simple. Wings unusually long and narrow, and densely hairy; radial cell

on wing margin very slightly longer than stigma; second abscissa of radius on a line with intercubitus;

nervulus slightly postfurcal; stub of third abscissa of

cubitus as long as second abscissa; hind wing more

than six times as long as wide; lower abscissa of basella

twice as long as nervellus, more than half as long as

mediella and three-fourths as long as maximum width

of hind wing.

First tergite of abdomen about twice as long as wide

at apex, smooth and polished basally, finely longitudinally rugulose on apical two-thirds, the spiracles nearer

to each other than to base of segment, the dorsal keels

wanting; second tergite clearly longer than broad at

base, finely rugulose except narrowly at apex; third

tergite largely and the following tergites entirely

smooth and shiny, the third with only a little weak

shagreening toward base; second suture fine but sharp;

ovipositor sheath a little shorter than abdomen, the

ovipositor strongly decurved at apex.

Head and thorax black; antennae blackish, the

flagellum dark brown beneath toward base; palpi and

mandibles black; tegulae and wing bases black; wings

rather strongly infumated, a little more strongly

apically than basally; legs reddish yellow, with only

extreme apices of hind femora, bases and apices of

hind tibiae, and all the tarsi darkened; abdomen with

the first three tergites testaceous to ferruginous, the

following black.

MALE.—Unknown.

HOLOTYPE.—In the Cornell University collection.

DISTRIBUTION.—Known only from the type-series

comprising three females (one the holotype) collected

at Casco, Maine, early in August 1944, by J. C.

Bradley.

Orgilus elasmo palpi, new species

FIGURE 53

Although this species is very similar to detectiformis

Viereck, it may be distinguished by the uniform, delicate sculpture of the hind coxae, the smoother second

tergite, the largely smooth metapleuron, the usually
NUMBER 30 39

paler legs and palpi, and the nearly hyaline wings.

FEMALE.—Length around 3.7 mm. Head barely

wider than thorax, in front view subtriangular and

broader than high, in dorsal view nearly twice as broad

as long; face about 1.3 times as wide as eye height,

punctate above, smooth and shiny below; malar space

longer than clypeus and slightly more than half as long

as eye height; cheeks not bulging, finely granulose;

temples gradually receding, at mideye point about 0.85

as wide as eyes; ocellocular line more than twice as

long as diameter of an ocellus; occipital carina broadly

interrupted medially; antenna 30- or 32-segmented in

the specimens examined, the 10 or 12 segments before

the last barely longer than broad.

Mesoscutum smooth and shiny, with only a few weak

punctures on the middle lobe; propodeum rugose,

with a subtriangular smooth area each side of the middle at base, and with prominent stubs of longitudinal

carinae extending forward from the posterior margin

and setting off five apical areas; dorsal face of propodeum nearly horizontal and much longer than the declivous posterior face; side of pronotum largely rugulose

punctate, granulose and mat anteriorly below; mesopleuron smooth and polished, the longitudinal furrow

finely foveolate; metapleuron largely smooth and shiny

but rugulose at the lower posterior margin. Hind coxa

about half as long as hind femur, uniformly granulose

or shagreened and subopaque on outer side and above;

hind femur nearly five times as long as wide; longer

calcarium of hind tibia slightly more than half as long

as metatarsus; tarsal claws simple. Stigma narrow and

slightly shorter than radial cell on wing margin; second abscissa of radius on a line with intercubitus; stub

of third abscissa of radius at least as long as second

abscissa; nervulus interstitial or virtually so; hind wing

about five times as long as wide; lower abscissa of

basella distinctly longer than nervellus but less than

half as long as mediella or maximum width of hind

wing.

First abdominal tergite nearly 1.5 times as long as

wide at apex, finely rugulose over most of its surface;

second tergite very slightly broader at base than long

(usually about 0.9 as long as broad), smooth and

polished, at most with a little faint shagreening each

side of middle basally; the following tergites also

smooth, the second suture very weak; ovipositor sheath

about as long as the distance from base of scutellum to

end of abdomen.

Black; palpi yellowish or brownish yellow; clypeus

at lower margin and the mandibles reddish yellow;

scape below and basal half of flagellum brownish yellow, remainder of antenna darkened; tegulae and wing

bases yellow; wings hyaline or subhyaline; legs, including all coxae, reddish yellow; apices of hind femora

and of hind tibiae a little darkened; abdomen reddish

yellow, the first tergite broadly blackish medially, the

apical tergites usually brownish.

MALE.—Unknown.

HOLOTYPE.—USNM 70416.

DISTRIBUTION.—The type-series contains the following female specimens reared from Elasmopalpus lignosellus Zeller: 6 (one the holotype), Gainesville,

Florida, 1965; 1 Gainesville, Florida, 11 September

1916, R. N. Wilson; 14, Tifton, Georgia (1 in 1935, 1

in 1936, 12 in 1962), D. B. Leuck; 1, Athens, Georgia,

November 1899; 1, "Georgia," 23 July 1957, M. Dupree, and 1, Burke County, Georgia, 13 August 1944,

T. L. Bissell. In addition the type-series includes female

specimens as follows: 1, Locust Grove, Georgia, 8

October 1937, P. W. Fattig; 1, from a green cotton

boll, Brownsville, Texas, 12 July 1956; 1, Brownsville,

Texas, November 1953, J. M. McGough; 1, recorded

as reared from Diatraea saccharalis (Fabricius) in

corn, Columbia, South Carolina, 8 September 1881; 1,

Highlands, North Carolina, 24 August 1957, L. A.

Kelton; 1, Highlands, North Carolina 9 May 1957, W.

R. M. Mason, and 1, Cedar Mt, North Carolina, 4

October 1941, Henry Townes. The paratype reared

from E. lignosellus at Gainesville, Florida, in 1916 by

R. N. Wilson is the specimen mentioned by Chittenden

(1900, p. 21) as having been identified by Ashmead as

"Orgilus (Microgaster) mellipes Say."

Orgilus erythropus, new species

Although this species very closely resembles validus,

new species, it seems to be distinct. The metapleuron

is less completely rugulose and the frons is transversely

striate rather than irregularly rugulose as in validus;

also, the second tergite is a little punctate basally.

FEMALE.—Length about 4.5 mm. Head about as

wide as thorax and in dorsal view 0.6 as long as wide;

face 1.2 times as wide as eye height, only slightly convex, shiny but closely punctate, confiuently so on upper

third; clypeus closely punctate; malar space half as

long as eye height, shagreened; cheeks strongly shagreened and mat; temples 0.8 as wide as eyes, distinctly

receding, smooth and polished adjacent to eyes, sha-
40 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

greened near occipital carina, which is broadly interrupted medially; frons transversely striate immediately

above antennal foramina; ocellocular line less than

twice as long as diameter of an ocellus; a few punctures

on back of head below ocelli; antennae of holotype

32-segmented, some segments in the apical fourth as

wide as long.

Mesoscutum shiny, the middle lobe with shallow

setigerous punctures; notauli strongly foveolate; disc

of scutellum convex, smooth and shiny; propodeum

coarsely rugose, the dorsal face short, the posterior

declivity abrupt and long, the apical stubs of the longitudinal carinae that arise from the posterior margin

very prominent and setting off large apical areas that

are roughened; side of pronotum closely rugulose;

mesopleuron smooth and polished above the longitudinal furrow except for a rugulose area in the upper anterior angle, the furrow coarsely, rather irregularly

foveate, the area below it finely rugulose punctate;

metapleuron rugulose on lower half, smooth and shiny

in upper angle. Hind coxa rugulose above and more

finely so on outer side; hind femur twice as long as

hind coxa and about five times as long as wide; inner

calcarium of hind tibia very slightly more than half

as long as metatarsus; tarsal claws simple. Radial cell

on wing margin as long as stigma; second abscissa of

radius on a line with intercubitus; stub of third abscissa

of cubitus at least as long as second abscissa; nervulus a

little postfurcal; hind wing about four times as long

as wide; lower abscissa of basella about as long as

nervellus and about one-third as long as mediella or

maximum width of hind wing.

Abdomen stout, widest on third segment; first tergite 1.2 times as long as wide at apex, closely rugulose

except at base and medially at apex, where it is smooth

and polished, the dorsal keels not developed, the spiracles about twice as far from apex as from base; second tergite 1.2 times as wide at base as long, broadening conspicuously caudad, and largely smooth and

polished, only weakly punctate medially on basal third;

second suture faint; third and following tergites

smooth and polished; ovipositor sheath as long as propodeum and abdomen combined.

Black; clypeus anteriorly and the mandibles ferruginous; palpi piceous; antennae yellowish below on

basal half, brown apically and above; legs reddish yellow except the apical tarsal segments which are a little darkened; tegulae blackish, wing bases yellow;

wings slightly infumated, more strongly so apically

than basally; conspicuous reddish spots in the apical

corners of the first and second tergites.

MALE .—Unknown.

HOLOTYPE.—USNM 70161.

DISTRIBUTION.—Known only from the holotype

female taken at Corinne, Utah, 8 August 1929, by

G. F. Knowlton and M. F. Bowen.

Orgilus exilis, new species

In its very slender femora this species resembles femoralis, but otherwise it is very different. The face is relatively much narrower, the ovipositor is considerably

shorter, the dorsal keels of the first tergite are lacking, the second tergite is relatively broader, and the

tegulae are black.

FEMALE.—Length 3 mm. Head distinctly wider

than thorax, in dorsal view 1.8 times as wide as long;

face barely wider than eye height (in ratio of 60:57)

and very shiny, a little rugulose just below antennae

but largely weakly punctate; clypeus with only a few

very weak minute punctures; malar space virtually

half as long as eye height (in ratio of 28:57), granulose and dull; cheeks shagreened and subopaque; temples 0.6 as wide as eye, smooth and polished; ocellocular line a little more than twice as long as diameter

of an ocellus; antenna of holotype 28-segmented, some

of the segments in the apical third at least as broad as

long.

Mesoscutum very shiny, but lateral lobes, as well as

median lobe, covered with very shallow punctures; disc

of scutellum smooth and shiny; propodeum finely rugulose, the stubs of carinae arising from the posterior

margin rather prominent and long, at least the two

median ones which define the median apical area;

side of pronotum rugulose in the impression, narrowly

smooth along upper margin and nearly smooth and

very shiny on the area in front of the impression; mesopleuron smooth and polished, the longitudinal furrow

foveolate; metapleuron smooth and very shiny on at

least the anterior half, finely rugulose posteriorly. Hind

coxa largely smooth and shiny but with a little weak

sculpture basally above and on outer side; hind femur

twice as long as hind coxa and virtually six times as

long as wide; inner calcarium of hind tibia slightly

more than half as long as metatarsus; tarsal claws

simple. Stigma slightly longer than radial cell on wing

margin; nervulus postfurcal by nearly half its length;

hind wing 4.5 times as long as wide; lower abscissa of
NUMBER 30 41

basella much longer than nervellus but less than half

as long as mediella or maximum width of hind wing.

Abdomen slender, much narrower than thorax; first

tergite 1.25 times as long as wide at apex, the spiracles

three times as far from apex as from base, basal part

of the tergite completely smooth and polished, with no

suggestion of the dorsal keels, the tergite also narrowly

smooth and polished across apex, the area between

these polished bands finely longitudinally rugulose;

second tergite parallel-sided, a little broader at base

than long (in ratio of 70:60), smooth and polished

with only a little faint sculpture medially at base; the

following tergites smooth and polished, the suture

between second and third tergites faint; ovipositor

sheath slightly longer than propodeum and abdomen

combined.

Black; clypeus entirely black; antennae dark brown;

tegulae black, wing bases piceous; wings hyaline,

radiella and cubitella of hind wings not at all pigmented; legs brownish yellow; hind coxae blackish at

bases, hind tibiae slightly darkened apically, and the

tarsi also darkened; abdomen black above and below.

MALE .—Unknown.

HOLOTYPE.—In the collection of R. D. Shenefelt,

University of Wisconsin.

DISTRIBUTION.—Known only from the holotype

female collected 15 June 1938, near Dufur, Oregon,

by K. Gray and J. Schuh.

Orgilus fallax, new species

This species is very similar to frigidus, new species, but

it may be distinguished by its somewhat longer ovipositor, relatively broader hind wings, barely postfurcal nervulus, smoother first tergite and relatively

longer second tergite.

FEMALE.—Length about 4 mm. Head in dorsal

view about 0.6 as long as wide, not wider than thorax

at tegulae; face about 1.2 times as wide as eye height,

strongly convex and closely and finely punctate, the

interspaces on upper part of face shagreened; malar

space half as long as eye height, finely granulose and

mat; clypeus weakly punctate and shiny; cheeks shagreened and mat; temples 0.85 as wide as eyes, only

slightly receding, smooth and polished adjacent to eyes,

finely and rather broadly shagreened along occipital

carina, which is broadly interrupted medially; vertex

and back of head smooth and shiny; ocellocular line

barely twice as long as diameter of an ocellus; antennae

of holotype 30-segmented, none of the flagellar segments wider than long, the five preceding the apical

segment distinctly longer than wide.

Thorax rather stout; mesoscutum very smooth and

shiny, but the middle lobe with some very shallow and

minute punctures; notauli sharp and very finely

foveolate, meeting much before apex of scutum, a few

punctures behind their junction; disc of scutellum

convex and shiny; propodeum rugose, a small transverse, smooth and polished area each side of the

middle at extreme base, the stubs of the longitudinal

carinae that arise from the posterior margin rather

prominent and extending forward at least one-third

the way toward base, the lateral apical areas impressed

and smooth and shiny; side of pronotum finely rugulose

in the impression, granulose along anterior margin

and weakly shagreened and shiny along upper margin;

mesopleuron smooth and polished, the longitudinal

furrow finely foveolate, no punctures or other sculpture below the furrow and the surface in the upper

anterior angle almost entirely smooth; metapleuron

rugulose but weakly so in the upper anterior angle.

Hind coxa strongly rugulose on upper edge and on

upper part of outer side; hind femur twice as long

as hind coxa and about five times as long as broad;

inner calcarium of hind tibia slightly more than half

as long as metatarsus; tarsal claws simple. Radial cell

on wing margin about as long as stigma, the latter

very narrow; second abscissa of radius on a line with

intercubitus; stub of third abscissa of cubitus as long

as second abscissa; nervulus barely postfurcal; hind

wing 4.3 times as long as wide; lower abscissa of

basella about as long as nervellus and much less than

half as long as mediella.

Abdomen stout, at widest point nearly as wide as

thorax; first tergite 0.8 as wide at apex as long,

closely rugulose punctate except on basal third where

it is smooth and shiny, the dorsal keels not developed,

the spiracles about twice as far from each other as

from the base of the segment; second tergite about 1.15

times as broad at base as long, broadening slightly

caudad, and finely confluently punctate except narrowly at apex and along lateral margins; second

suture fine but sharply impressed; third tergite with

a small transverse area of weak punctures a little

beyond base, otherwise smooth and polished like the

following; ovipositor sheath about as long as propodeum and abdomen combined.

Black; palpi blackish; clypeus on lower third and
42

the mandibles reddish yellow; trochanters not darkened; hind coxae blackish, especially above and

toward bases; hind femora darkened above and inwardly; hind tibiae apically and all the tarsi more or

less darkened; tegulae black, wing bases dark brown;

wings a little infuriated; abdomen black above, the

apical margin of third tergite a little rufous; venter

piceous.

MALE.—Unknown.

HOLOTYPE.—USNM 70162.

DISTRIBUTION.—Known only from the holotype

female from Mt. Laguna, San Diego County, California, collected 23 May 1959, by J. Powell.

Orgilus femoralis, new species

FIGURE 13

In habitus and in some details this species resembles

mundus, new species; but it may be readily distinguished by its unusually slender hind femora, its

smooth second tergite and its yellow tegulae and palpi.

FEMALE.—Length about 4 mm. Head about 1.2

times as wide as thorax, in dorsal view 1.5 times as

wide as long; face about 1.25 times as wide as eye

height, very shiny, more or less roughened just below

antennae, otherwise smooth and shiny with only

indistinct punctures; clypeus shiny, with a few weak

punctures; malar space shagreened and mat, much

longer than clypeus and 0.57 as long as eye height;

cheeks finely shagreened; temples more than threefourths as wide as eyes, gradually receding, smooth,

and shiny except along posterior margins where they

are a little shagreened; occipital carina narrowly interrupted at the middle; frons smooth and polished

except for a small shagreened area adjacent to each

eye; vertex polished; both ocellocular line and

postocellar line more than twice as long as diameter

of an ocellus; antennae of the two known specimens

incomplete.

Thorax slender; mesoscutum smooth and shiny, the

middle lobe with a few weak punctures; notauli sharp,

deep, finely foveolate; disc of scutellum convex, longer

than wide, smooth and polished; propodeum rugulose,

with a small, smooth and polished area each side of

the middle at base, and with the apical areas set off

by rather poorly developed stubs of the carinae that

arise from the posterior margin of the propodeum; side

of pronotum closely rugulose; mesopleuron smooth and

polished, the longitudinal furrow nearly straight and

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

finely foveolate; metapleuron largely closely rugulose,

only smooth in the upper anterior angle. Hind coxa

rugulose at base above, punctate and shiny on outer

side; hind femur twice as long as hind coxa and very

nearly six times as long as its maximum width; inner

calcarium of hind tibia hardly half as long as metatarsus; tarsal claws simple. Radial cell on wing margin

just about as long as stigma; second abscissa of radius

on a line with intercubitus; stub of third abscissa of

cubitus about as long as second abscissa; nervulus

slightly postfurcal; hind wing about 4.3 times as long

as wide; lower abscissa of basella not or barely longer

than nervellus and much less than half as long as

mediella.

Abdomen slender, a little narrower than thorax; first

tergite 1.5 times as long as broad at apex, largely

finely, longitudinally rugulose, the dorsal keels distinct

to beyond the spiracles; second tergite very slightly

longer than broad at base, smooth and shiny, at most

with a little faint shagreening toward base; remainder

of abdomen smooth and shiny; ovipositor sheath just

about as long as head, thorax, and abdomen combined.

Black; clypeus reddish yellow apically; palpi yellowish; antennae basally yellow or brownish yellow, darkened apically; legs brownish yellow, the hind coxae

more or less extensively blackish basally and each of the

femora with a dark streak along inner side near upper

edge; tarsi usually pale; tegulae and wing bases yellow; wings slightly infumated; third and following

tergites largely dark brown.

MALE .—Unknown.

HOLOTYPE.—USNM 70163.

DISTRIBUTION.—Known only from the holotype

female collected at Hollister, Idaho, 4 May 1931, by

D. E. Fox, and one paratype female taken by C. F.

Baker at Fort Collins, Colorado, 6 December 1892,

"under a stone along the roadside."

Orgilus ferus, new species

FIGURE 39

This species most closely resembles lunaris, new species,

but is distinguished especially by its black tegulae and

wing bases, more receding temples and hyaline wings.

FEMALE.—Length about 3.8 mm. Head slightly

wider than thorax, in dorsal view nearly twice as wide

as long; face about 1.3 times as wide as eye height,

shiny, with scattered shallow punctures on the lower

part and rugulose on the upper part; malar space
NUMBER 30 43

longer than clypeus and just about half as long as

eye height; anterior tentorial pits much below level

of lower eye margins; cheeks weakly alutaceous; temples smooth and polished, gradually receding, about

0.75 as wide as eyes; occipital carina narrowly interrupted medially; ocellocular line twice as long as

diameter of an ocellus; antennae 30- or 31-segmented

in the available specimens, none of the segments as

broad as long.

Mesoscutum smooth and shiny, without distinct

punctures; notauli sharply impressed, foveolate, very

coarsely so posteriorly, and meeting in a small rugulose

area; prescutellar sulcus large and deep, the septa very

low, the foveae very small; disc of scutellum convex,

polished; propodeum strongly convex, rugulose punctate, the stubs of the carinae at the posterior margin

weak or indistinct; side of pronotum rugulose, weakly

so toward upper margin; mesopleuron smooth and

polished, the longitudinal furrow evenly and finely

foveolate; metapleuron rugulose posteriorly below,

largely smooth anteriorly above. Hind coxa about half

as long as hind femur, rugulose above, at least toward

base, largely smooth on outer side; hind femur very

nearly five times as long as broad; inner calcarium of

hind tibia more than half as long as metatarsus; tarsal

claws simple. Radial cell on wing margin slightly

shorter than stigma; second abscissa of radius on a

line with intercubitus; stub of third abscissa of cubitus

a little longer than second abscissa; nervulus a little

postfurcal; hind wing just over four times as long as

wide; lower abscissa of basella not longer than

nervellus.

Abdomen barely longer than thorax; first tergite

about 1.2 times as long as broad at apex, very finely

rugulose punctate but with the smooth basal area

extending caudad medially to the middle of the tergite,

the 'dorsal keels not developed; second tergite about

0.75 as long as broad at base, finely confluently punctate except along posterior margin where it is smooth;

third tergite with a transverse punctate area on basal

half; second suture very fine but distinct; remainder of

dorsum of abdomen smooth and polished; ovipositor

sheath about as long as distance from base of scutellum

to end of abdomen.

Black; scape entirely black or blackish; flagellum

more or less brownish toward base; palpi black; legs

reddish testaceous, with the basal segments of the

trochanters of all legs, the dorsal edges of all femora

more or less, the middle and hind tibiae in part, and

all the tarsi, somewhat darkened; tegulae black, wing

bases piceous; wings hyaline.

MALE.—Essentially like the female. Antennae 30-

or 31-segmented in the available specimens, the segments of the apical half considerably longer than in the

female; the legs darker than in the female, all coxae

usually black and the fore- and middle femora more

extensively darkened.

HOLOTYPE.—USNM 70164.

DISTRIBUTION.—Known only from the type-series

which comprises the following: Holotype female and

1 male collected by M. C. Lane at Lind, Washington,

7 May 1923 and 15 May 1922, respectively; 1 female

and 1 male, Lind, Washington, 11 June 1919, F. W.

Carlson; 1 female, Park Valley, Utah, 17 July 1929,

G. F. Knowlton; 1 female, Wellsville, Utah, 29 June

1929, G. F. Knowlton; 2 females, Melba, Idaho, June

and July 1957, H. W. Homan; 1 female, Hollister,

Idaho, 11 July 1929; 2 fenafcles, Taos, New Mexico,

9000 feet, June 1960, "Burks and Kinser," and 1

female, Walker Pass, Kern County, California, 26

April 1949.

Orgilus fictus, new species

Structurally this species is extremely like cinctus, new

species, but the temples are a little wider and the second tergite is relatively shorter and broader; in color

it differs in lacking the yellow band on the abdomen

and in the darker antennae.

FEMALE.—Length about 3.8 mm. Head hardly as

wide as thorax and in dorsal view 0.75 as long as wide;

face protruding, clearly narrower than eye height,

granulose above, alutaceous laterally and below; anterior tentorial pits much below level of lower eye

margins; clypeus strongly convex and finely punctate;

malar space less than one-third as long as eye height,

finely shagreened and rather mat; cheeks weakly shagreened below, smooth and shiny above; temples

smooth and polished, not receding and 0.85 as wide as

eyes; occiput carinately margined only at the sides;

ocellocular line slightly shorter than postocellar line and

less than twice as long as diameter of an ocellus; maxillary palpi as long as height of head; antennae 31-segmented in the holotype, even the shortest flagellar segments a little longer than broad.

Mesoscutum shiny, but the surface of the lobes

faintly alutaceous and with some extremely shallow,

indistinct punctures; notauli sharply impressed and
44

foveolate; disc of scutellum rather large, strongly convex and faintly alutaceous; propodeum largely weakly

shagreened on basal half, finely rugulose on posterior

declivity; side of pronotum largely finely granulose or

shagreened, somewhat rugulose in the impression; mesopleuron smooth and polished, the longitudinal furrow sinuate and foveolate; metapleuron largely

granulose or shagreened and rather mat. Hind coxa

finely shagreened and subopaque; hind femur just

about four times as long as wide, finely granulose and

rather dull; inner calcarium of hind tibia slightly more

than half as long as metatarsus; claws simple. Stigma

very narrow, slightly shorter than radial cell on wing

margin; second abscissa of radius nearly on a line with

intercubitus; stub of third abscissa of cubitus about as

long as second abscissa; nervulus a little postfurcal;

hind wing five times as long as wide; lower abscissa

of basella much longer than nervellus, half as long as

mediella and fully half as long as maximum width of

hind wing.

Abdomen with first tergite about 1.4 times as long

as wide at apex, finely granulose over most of its surface, with only a few weak rugulae laterally, the dorsal keels weak but distinct to well beyond the spiracles;

second tergite about 0.7 as long as wide at base, almost

parallel-sided, finely and confluently punctate each

side of the middle, smooth and polished across base and

medially, faintly alutaceous apically; third tergite

largely smooth and shiny, with only a little weak shagreening laterally; second suture sharply impressed;

fourth and following tergites smooth and polished; ovipositor sheath about as long as distance from base of

scutellum to end of abdomen.

Black; mandibles yellow; palpi blackish; clypeus

ferruginous anteriorly; antennae yellowish brown below toward bases, darker above, the scape darker than

the basal part of the flagellum; legs, including all

coxae, testaceous, the femora more or less darkened on

the upper edges, also the hind femur on inner and

outer sides of apical fourth, the hind tibia dark, a little

lighter on the middle third, the tarsi darkened; tegulae

and wing bases yellow; wings somewhat smoky; abdomen black, even the sternites rather piceous.

HOLOTYPE.—In the Museum of Comparative Zoology, Harvard University.

DISTRIBUTION.—Known only from the holotype

female, which was taken by H. Levi in sweeping a dry

field at West Springfield, Erie County, Pennsylvania,

5 June 1961.

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Orgilus fisheri, new species

This species is exceedingly like prolixus, new species,

but the two seem definitely to be distinct. In fisheri the

hind wing is relatively much narrower, the face, cheeks,

first tergite, and metapleuron are smoother and the

wings are somewhat infumated.

FEMALE.—Length 3.2 mm. Head not distinctly

wider than thorax, in dorsal view 0.65 as long as wide;

face very slightly wider (1.1 times) than eye height,

very shiny and with only scattered minute punctures,

not shagreened laterally as in prolixus; malar space

slightly longer than clypeus and 0.45 as long as eye

height, very weakly shagreened; cheeks largely smooth,

very weakly shagreened only at the lower margins;

temples about 0.7 as wide as eyes, a little receding,

smooth and shiny; occipital carina present only at the

sides; ocellocular line a little more than twice as long

as diameter of an ocellus; antennae of holotype 32-

segmented, even the shortest segments of the flagellum

a little longer than broad.

Mesoscutum smooth and shiny, the middle lobe with

a few very shallow setigerous punctures; notauli sharply

impressed, foveolate and meeting in a small rugulose

punctate area; disc of scutellum very small, flat

smooth, and polished; propodeum strongly rugose, the

stubs of the longitudinal carinae that arise from the

posterior margin short and rather weak; side of pronotum completely rugulose punctate, more weakly so

along upper margin; mesopleuron smooth and polished, the longitudinal furrow finely foveolate, nearly

straight; metapleuron rugulose except on a small area

in the upper basal angle, which is shiny and very

weakly punctate. Hind coxa more than half as long as

hind femur, smooth and shiny except basally on the

dorsal edge where it is a little roughened; hind femur

4.7 times as long as broad; inner calcarium of hind

tibia about half as long as metatarus; tarsal claws

simple. Radial cell on wing margin just about as long

as stigma; second abscissa radius on a line with intercubitus; stub of third abscissa of cubitus as long as

second abscissa; nervulus just postfurcal; hind wing

very narrow, at least five times as long as wide; lower

abscissa of basella about half as long as mediella or as

maximum width of hind wing.

Abdomen rather slender; first tergite 1.4 times as

long as wide at apex, weakly longitudinally rugulose

laterally, nearly smooth down the middle, smooth and

polished at base and apex, dorsal keels weak but distinct to beyond spiracles; second tergite as long as wide
NUMBER 30 45

at base, smooth and polished except for a small confluently punctate area each side of the middle on

basal half; third and following tergites smooth and

polished, the second suture very weak; ovipositor sheath

one and one-half times as long as head, thorax and

abdomen combined.

Black; lower margin of clypeus reddish; mandibles

yellowish, also the antennal flagellum on the basal

third, remainder of antenna darkened; legs yellow;

tegulae piceous, wing bases yellowish brown; wings a

little smoky; the first tergite at apex, and the second

and third tergites largely, yellowish brown; apical tergites piceous; venter of abdomen largely yellowish.

MALE.—Unknown.

HOLOTYPE.—USNM 70165.

DISTRIBUTION.—Known only from one female collected by W. S. Fisher at Lyme, Connecticut, 11 July

1918.

Orgilus frigidus, new species

This species is most similar to fallax, new species, but it

differs in having the first tergite completely sculptured,

even at base, in its more strongly postfurcal nervulus

and in its shorter ovipositor.

FEMALE.—Length 3.8 mm. Head barely wider than

thorax, in dorsal view 0.65 as long as broad; face 1.2

times as wide as eye height, largely rugulose punctate

and medially above with a very short and low, longitudinal, shining keellike elevation; clypeus closely

punctate; malar space just about half as long as eye

height, shagreened and dull like the cheeks; temples

nearly as wide as eyes (in ratio of 35:38), only very

slightly receding, shagreened along occipital margin,

smooth and polished adjacent to eyes; occipital carina

rather broadly interrupted medially; ocellocular line

more than twice as long as diameter of an ocellus;

antennae of holotype 31-segmented, rather slender and

apically thinner, none of the preapical segments quite

as broad as long.

Mesoscutum smooth and shiny, with only some very

shallow punctures on the middle lobe; notauli sharply

impressed, strongly foveolate; disc of scutellum

polished; the prescutellar sulcus very large, more than

half as long as disc of scutellum; propodeum evenly

convex, rugose, a very weak, median longitudinal

raised line at base, the stubs of the longitudinal carinae

that arise from the apical margin rather prominent

and extending the length of the posterior declivity;

side of pronotum closely rugulose and dull except

narrowly along upper margin where it is nearly

smooth; mesopleuron smooth and polished, the longitudinal furrow sinuate and rather strongly foveolate;

metapleuron rugulose, coarsely so posteriorly, weakly

anteriorly. Hind coxa rugulose, coarsely so above

toward base; hind femur twice as long as hind coxa

and about five times as long as broad; inner calcarium

of hind tibia slightly more than half as long as metatarsus; tarsal claws simple. Radial cell on wing margin

slightly shorter than stigma; second abscissa of radius

on a line with intercubitus; stub of third abscissa of

cubitus as long as second abscissa; nervulus postfurcal

by one-third its length; hind wing only a little less

than five times as long as its maximum width, but

lower abscissa of basella only slightly longer than

nervellus and decidedly less than half as long as

mediella or than maximum width of hind wing.

Abdomen at widest point (at base of third tergite)

as wide as thorax at tegulae; first tergite closely

rugulose, even at the base, 1.3 times as long as wide

at apex, the basal dorsal keels not developed, the

spiracles hardly twice as far from apex as from base;

second tergite about 1.3 times as broad at base as long,

closely rugulose punctate, narrowly smooth and

polished at apical margin; second suture sharply

impressed; third tergite smooth and polished except

for a transverse, confluently punctate area at the

middle; remainder of dorsum of abdomen smooth and

polished; ovipositor sheath barely as long as abdomen.

Black; clypeus except basally and the mandibles

testaceous; palpi blackish; antennae yellowish brown

basally, brown to blackish apically; legs testaceous, the

hind coxa basally, the middle femur on upper edge,

the hind femur on inner side toward apex, and all the

tarsi more or less, darkened; tegulae and wing bases

brownish yellow; wings hyaline basally, a little infumated apically; abdomen entirely black above, the

venter piceous.

MALE.—Unknown.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Known only from the holotype

female, which was collected at Norman Wells, Northwest Territories, 23 July 1949, by W. R. M. Mason.

Orgilus fulgens, new species

This is rather similar to longiceps Muesebeck, but it

may be distinguished immediately by its much

smoother abdomen. From lissus, new species, which
46

it seems to resemble even more closely, it differs as

indicated in the description of that species.

MALE.—Length 4.3 mm. Head hardly as wide as

thorax, in dorsal view 0.75 as long as wide; face

slightly narrower than eye height, coarsely rugulose

punctate; clypeus strongly and closely punctate; malar

space about one-third as long as eye height, punctate

granulose; cheeks smooth and polished; anterior

tentorial pits below level of lower eye margins; temples

not receding, very nearly as wide as eyes, smooth and

polished; vertex smooth and polished; occipital carina

broadly interrupted medially; ocellocular line less

than twice as long as diameter of an ocellus; antennae

of holotype 33-segmented, even the shortest flagellar

segments clearly longer than broad.

Thorax stout; mesoscutum smooth and shiny;

notauli sharply impressed and foveolate, meeting in

a very acute angle just before posterior margin of

scutum; disc of scutellum small, smooth and polished;

propodeum closely rugulose, even in the posterior

areas that are set off by short and weak stubs of longitudinal carinae arising from the posterior margin;

side of pronotum rugulose, broadly smooth above;

mesopleuron smooth and polished, the longitudinal

furrow sinuate and foveolate; metapleuron smooth

and polished except along the lower posterior margin

where it is somewhat rugulose. Hind coxa considerably

more than half as long as hind femur, smooth and

shiny on outer side, finely granulose on upper edge

basally; hind femur stout, barely four times as long

as wide; inner calcarium of hind tibia just about half

as long at metatarsus; tarsal claws simple. Radial cell

on wing margin as long as stigma; second abscissa of

radius on a line with intercubttus; stub of third abscissa

of cubitus about as long as second abscissa; nervulus

slightly postfurcal; hind wing 4.5 times as long as

broad; lower abscissa of basella a little longer than

nervellus but less than half as long as mediella.

Abdomen on third tergite only very slightly

narrower than thorax; first tergite about 1.3 times as

long as broad at apex, largely finely rugulose punctate;

second tergite only slightly (1.1 times) broader at base

than long, largely smooth and shiny but with a closely

punctate area each side of the middle on basal half;

third and following tergites smooth and polished.

Black; clypeus entirely black; palpi piceous; scape

black or blackish below as well as above, the flagellum

yellowish brown on basal half, darker apically, legs reddish yellow, the hind coxae darkened basally; hind

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

femora darkened on apical two-thirds; hind tibiae a

little infuscated basally and on apical third; hind tarsi

dark; tegulae piceous, wing bases brownish yellow;

wings a little infumated.

FEMALE.—Unknown.

HOLOTYPE.—USNM 70166.

DISTRIBUTION.—Known only from two males: The

holotype collected 28 June 1953, near Cumberland,

Maryland, by Luella M. Walkley, and a paratype

labeled only "Agr. College, Mich."

Orgilus gelechiae (Ashmead)

FIGURE 23

Ganychorus gelechiae Ashmead, 1889, p. 645.

Blacus gelechiae (Ashmead).— Dalla Torre, 1898, p. 92.

Orgilomorpha gelechiae (Ashmead).—Ashmead, 1900,

p. 125.

Eubadizon lithocolletidis Viereck, 1912, p. 622.

Orgilus gelechiae (Ashmead).—Muesebeck and Walkley,

1951, p. 111.

From momphae, new species, which is very similar to

gelechiae, the latter may be definitely distinguished by

the structure of the tarsal claws. In momphae the claw

has a strong and prominent subbasal tooth, whereas in

gelechiae the claw is simple or is only weakly angulated

near the middle of the inner margin. The hind femora

seem always to be completely yellow in gelechiae, but in

momphae they are somewhat darkened apically; and

whereas the head of momphae is normally black, that

of gelechiae is usually largely, often entirely, yellow.

Moreover, the ocelli in momphae are smaller, the ocellocular line being three times the diameter of an ocellus,

and the second abscissa of the radius is nearly on a line

with the intercubitus, which is not the case in gelechiae.

FEMALE.—Length normally ranging from 2.5 to 3.3

mm. Head wider than thorax, less than twice as wide

as long, as seen from above, and only very weakly

excavated behind; face convex, slightly wider than

eye height, minutely granulose or shagreened; malar

space less than one-fourth as long as eye height;

anterior tentorial pits about on a line with lower eye

margins; cheeks shagreened and mat; temples gradually receding, more than half as wide as eyes,

shagreened and mat; antennae with 27 to 37 segments,

all flagellar segments longer than broad; ocellocular

line less than three times as long as diameter of an

ocellus; distance between ocelli about equal to the

diameter of an ocellus; occipital carina broadly interrupted medially.
NUMBER 3 0 47

Mesoscutum finely shagreened and more or less dull;

notauli sharply impressed but not distinctly foveolate;

propodeum granulose, several short longitudinal carinae arising from posterior margin and setting off five

apical areas; side of pronotum, mesopleuron and metapleuron shagreened, the longitudinal mesopleural furrow usually not distinct. Hind coxa at least 0.75 as

long as hind femur, which is about four times as long

as wide; inner calcarium of hind tibia a little less than

half as long as metatarsus; tarsal claw simple or with

a more or less distinct angulation near middle of inner

edge. Radial cell on wing margin usually about 1.2

times as long as stigma, which emits the radius well

beyond its middle; second abscissa of radius not nearly

on a line with intercubitus; nervulus usually interstitial,

occasionally slightly antefurcal or postfurcal; hind wing

about five times as long as wide; lower abscissa of

basella much longer than nervellus, sometimes twice

as long, and more than half as long as mediella or

than maximum width of hind wing.

Abdomen stout, often a little broader than thorax;

first tergite a little longer than broad at apex, all the

rest strongly transverse; basal dorsal keels distinct to

the middle of first tergite; all sutures, including the

second, sharply impressed; all tergites usually closely

punctate, in part confluently so; ovipositor sheath about

as long as the abdomen, sometimes a little shorter.

Usually largely or entirely yellow but frequently with

more or less extensive blackish markings on the thorax

anfd abdomen, rarely thorax and abdomen largely

darkened above; legs yellow, the hind femora always

immaculate, even in the darkest specimens examined;

hind tarsi dusky; tegulae and wing bases yellow; wings

hyaline, stigma and veins yellow.

MALE.—Like the female in most essential respects

but abdomen usually more weakly sculptured, especially apically.

HOLOTYPES.—That of gelechiae, USNM 2970; that

of lithocolletidis, USNM 14718.

DISTRIBUTION.—The type of gelechiae is from Missouri, that of lithocolletidis is from Massachusetts. In

addition to the types the U.S. National Museum collections contain numerous specimens from Maine, Connecticut, New York, Pennsylvania, Ohio, Minnesota,

Virginia, West Virginia, Florida, Alabama, Louisiana,

and Texas. Recorded hosts are Lithocolletes hamadryadella Clemens, L. sp. on Myrica and Evippe prunifoliella Chambers. Among material of Orgilus lent to me

for this study by other institutions I have identified

,556-598 O—69 4

specimens of gelechiae from Ontario, Quebec, Nova

Scotia, Prince Edward Island, New Jersey, Maryland,

Tennessee, North Carolina, South Carolina, Michigan,

and Wisconsin. A series in the Canadian National Collections from Nova Scotia is labeled as having been

reared from Gracilaria sp. on Cornus.

Because the range in the number of antennal segments in this material is wider than seems to be usual

in Orgilus, it is possible that what I am here treating

as gelechiae may ultimately, when more material and

more biological information have become available, be

found to comprise more than one form. At present,

however, I am compelled to treat the specimens before

me as a single species.

Orgilus gelechiaevorus Cushman

FIGURES 2, 2a, 2b, 54

Orgilus gelechiaevora Cushman, 1920, p. 291.

In its reddish-yellow coloring this species resembles

comptanae, new species, but it is structurally very

different, being readily distinguished by its strongly

transverse head, its broader and less protuberant face,

longer malar space, receding temples and finely sculptured cheeks.

Length usually 3 to 3.5 mm. Head slightly broader

than thorax, in dorsal view 0.6 as long as wide; face a

little broader than eye height, finely granulose; anterior

tentorial pits considerably below level of lower eye

margins; malar space a little longer than clypeus and

nearly half as long as eye height; cheeks shagreened

and mat; temples gradually receding, at mideye point

about three-fourths as wide as eyes, shagreened along

occipital margin, smooth adjacent to eyes; occiput

margined only at the sides; ocellocular line more than

twice as long as diameter of an ocellus; antennae 28- to

33-segmented in the specimens examined, some segments in the apical fourth of the female antennae not

longer than broad.

Mesoscutum usually somewhat alutaceous, especially

adjacent to the notauli; disc of scutellum alutaceous;

propodeum granulose or finely rugulose; side of pronotum finely granulose and rather mat; mesopleuron

smooth above the sinuate foveolate longitudinal furrow, shagreened below it; metapleuron granulose and

dull. Hind coxa 0.6 as long as hind femur, finely

granulose and rather dull above and on outer side;

hind femur not more than four times as long as broad;
48 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

inner calcarium of hind tibia not more than half as

long as metatarsus; tarsal claws simple. Radial cell on

wing margin not longer than stigma; second abscissa

of radius on a line with intercubitus; stub of third

abscissa of cubitus about as long as the second abscissa;

nervulus usually slightly postfurcal but sometimes virtually interstitial; hind wing more than five times as

long as wide; lower abscissa of basella half as long as

mediella and usually more than half as long as maximum width of hind wing.

Abdomen usually about as wide as thorax; first tergite approximately 1.3 times as long as wide at apex,

closely, finely granulose, the dorsal keels not developed;

second tergite a little broader at base than long, finely

granulose like the first; third tergite much more weakly

sculptured and usually smooth apically, and the following tergites smooth; ovipositor sheath about as long

as propodeum and abdomen combined.

Reddish testaceous; ocellar triangle, metanotum,

apices of hind femora and tibiae and all the tarsi

sometimes more or less darkened; tegulae and wing

bases yellow; wings very weakly infumated; abdomen

sometimes darkened on apical segments.

DISTRIBUTION.—In addition to the holotype, which

is from New Jersey, and was reared from Aroga trialbamaculella (Chambers), the U.S. National Museum

collection contains a specimen labeled as having been

reared from Laspeyresia caryana (Fitch) at Cuero,

Texas, and other material, all without host data, from

New Jersey, Virginia, Alabama, Florida, Kentucky,

Iowa, and Texas, including a series of 35 specimens

from Weslaco, Texas, obtained in Antonina graminis

(Maskell) breeding cages and presumably from larvae

of some lepidopteran occurring in the grass crowns;

other specimens are labeled as "from cotton bolls,"

or "in cotton fields" in Texas.

Orgilus glacialis, new species

This species superficially resembles arcticus, new species, especially in being strongly sculptured and in its

black legs. The face is relatively narrower, however,

the temples are smoother, the antennae are more slender, the third abdominal tergite is completely smooth,

and the lower abscissa of basella is relatively shorter.

FEMALE.—Length about 4 mm. Head in dorsal

view 0.6 as long as wide, just about as wide as thorax;

face barely wider than eye height (in ratio of 62:60),

rugulose and rather dull; malar space longer than

clypeus but not quite half as long as eye height, and

together with the cheeks shagreened and mat; temples

shagreened below middle of eyes, largely smooth and

shiny above; clypeus smooth and very shiny, with only

a few scattered punctures, and not set off from the face

medially as in arcticus; temples at mideye point about

0.8 as wide as eyes; vertex shagreened; ocellocular line

more than twice as long as diameter of an ocellus;

occiput carinately margined only at the sides; antennae 29-segmented in the holotype, becoming thinner

apically, none of the flagellar segments quite as wide as

long.

Mesoscutum shagreened and subopaque; notauli

sharply impressed and finely foveolate; disc of scutellum only very faintly alutaceous, shiny; propodeum

closely rugulose, the stubs of the carinae that arise

from the posterior margin prominent and setting off

apical areas that are smoother than the dorsal face of

the propodeum; side of pronotum completely rugulose

and mat, even at the upper margin; mesopleuron

faintly alutaceous and shiny above the longitudinal

furrow, shagreened and somewhat mat below it;

metapleuron granulose anteriorly, rugulose posteriorly

and below, dull. Middle coxae finely shagreened; hind

coxae rugulose above, strongly granulose on the outer

sides, and dull, more than half as long as hind femora

which are just about four times as long as wide; inner

calcarium of hind tibia a little more than half as long

as metatarsus; tarsal claws simple. Radial cell on wing

margin very slightly shorter than stigma; second abscissa of radius on a line with intercubitus; stub of

third abscissa of cubitus at least as long as second abscissa; nervulus just postfurcal; hind wing about five

times as long as wide; lower abscissa of basella about

as long as nervellus and much less than half as long as

mediella or than half the maximum width of the hind

wing.

Abdomen with first tergite 1.3 times as long as wide

at apex, closely rugulose, the basal dorsal keels not developed, the distance from the spiracles to the base

about one-third the distance to the apex, second tergite 0.85 as long as wide at base, closely rugulose punctate except very narrowly at the sides and more broadly

at the apex; third and following tergites completely

smooth and polished; ovipositor sheath as long as propodeum and abdomen combined.

Black; palpi, clypeus, and antennae black; mandibles piceous; middle and hind legs entirely blackish;

forecoxae, trochanters, and bases of femora blackish,
NUMBER 30 49

the forefemora apically and the foretibiae yellowish,

foretarsi only a little darkened; tegulae and wing bases

blackish; wings uniformly a little smoky.

MALE.—Unknown.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Known only from the holotype female labeled "King Salmon, Naknek R., Alaska, 19.

vii.1952, J. B. Hartley."

Orgilus gracilis (Brues)

Blacus gracilis Brues, 1908, p. 55.

Orgilus gracilis (Brues).—Muesebeck and Walkley, 1951,

p. 111.

This species is extremely similar to citus, new species,

from which it differs noticeably only in its much paler

hind coxae and more extensively sculptured second

tergite. The following redescription is based on the

female holotype.

Length 2.8 mm. Head noticeably wider than thorax; its width-length ratio, in dorsal view, 90:55; face

slightly wider than eye height (in ratio of 53:47),

weakly shagreened to alutaceous, shiny, almost smooth

on a narrow strip down the middle; clypeus smooth

and shiny, with only a few punctures, and set off

from face by a very shallow impression; malar space

only slightly longer than clypeus and less than half as

long as eye height (in ratio of 20:45), finely shagreened and mat; temples rounded, gradually receding, at mideye point about 0.75 as wide as eyes, smooth

and polished; occipital carina distinct only at the sides;

vertex considerably above upper level of eyes, smooth;

ocellocular line about 2.5 times as long as diameter

of an ocellus; frons smooth and shiny; antennae 28-

segmented, some of the preapical segments not longer

than broad.

Thorax slender; mesoscutum shiny, weakly punctate

anteriorly but not at all granulose or shagreened;

notauli sharply impressed but not foveolate or

punctate; disc of scutellum very slightly shagreened on

posterior half; propodeum finely rugulose with some

shagreening between the rugulae, especially laterally

and basally, very narrowly polished at extreme base

each side of the middle; side of pronotum entirely

rugulose up to the dorsal margin, except only anteriorly

where it is granulose, the rugulosity weakest near the

upper edge; mesopleuron smooth and shiny, the longitudinal furrow narrow and finely foveolate, the surface

below it faintly alutaceous; metapleuron very finely

granulose and mat anteriorly, strongly rugulose on

lower posterior half. Hind coxa finely shagreened and

subopaque, not rugose at base above; hind femur 4.7

times as long as broad and not quite twice as long

as hind coxa; inner calcarium of hind tibia slightly

more than half as long as metatarsus. Radial cell

narrow; second abscissa of radius on a line with intercubitus; stub of third abscissa of cubitus as long as

second abscissa; nervulus barely postfurcal, nearly

interstitial; hind wing a little more than five times

as long as wide, the anterior and posterior margins

parallel; lower abscissa of basella longer than nervellus

but less than half as long as mediella (in ratio of

25:60).

Abdomen with first tergite finely granulose or

punctate, smooth across apex, the dorsal keels not

developed, the spiracles at the end of the basal fourth;

second tergite 0.9 as long as broad at base, broadening

slightly but distinctly caudad, weakly rugulose punctate on basal half except laterally where it is smooth;

third and following tergites smooth and polished; ovipositor sheath as long as propodeum and abdomen

combined.

Head and thorax black; palpi and mandibles yellow;

clypeus testaceous on apical two-thirds, piceous basally,

antenna yellow on basal half, including scape and

pedicel (except that scape is brownish above), darkened apically; legs yellow, the fore- and middle pairs

entirely so, hind coxae darkened at extreme bases

above, hind femora a little brownish apically, hind

tibiae apically and hind tarsi a little darkened; tegulae

and wing bases pale yellow; wings subhyaline; abdomen with first tergite blackish, its posterior corners

red; remainder of dorsum of abdomen brownish

piceous; basal stemites yellow, apical ones somewhat

piceous.

HOLOTYPE.—In the collection of the University of

Minnesota.

DISTRIBUTION.—The holotype is from Minneapolis,

Minnesota. I have seen only one other specimen

which I could safely identify as gracilis. It is a female

in the Canadian National Collections from Stockton,

Manitoba, collected 26 May 1958, by C. D. F. Miller.

Orgilus gramineus, new species

The unusually broad first tergite distinguishes this

species from those most closely related to it, except

compactus, new species, from which it differs especially
50

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

in its longer ovipositor, relatively shorter second tergite, less retracted apical abdominal segments, and

paler hind coxae.

FEMALE.—Length about 3.5 mm. Head hardly as

wide as thorax, in dorsal view 1.7 times as wide as long;

face strongly convex, barely wider than eye height (in

ratio of 60:58), very shiny and with well-separated

minute punctures; malar space hardly longer than

clypeus and about 0.45 as long as eye height, weakly

shagreened and shiny; clypeus shiny, minutely punctate; cheeks largely polished, only weakly shagreened

near lower margins; temples entirely smooth and

polished, slightly receding and 0.65 as wide as eyes;

frons smooth and shiny; maxillary palpi shorter than

height of head; occipital carina narrowly interrupted

medially; antennae 29-segmented in the holotype,

some segments in apical fourth of flagellum fully as

broad as long.

Thorax stout; mesonotal lobes rather flat, smooth

and very shiny, with only some very weak oblique

punctures near the notauli; notauli shallow, finely

foveolate; disc of scutellum very weakly convex and

with a few faint punctures; propodeum strongly convex, rugulose, the stubs of the carinae that arise from

the posterior margin poorly developed; side of pronotum largely rugulose but broadly smooth at upper

margin; mesopleuron smooth and polished, the longitudinal furrow straight and very weak, only indistinctly

and incompletely foveolate; metapleuron smooth and

shiny anteriorly, rugulose posteriorly. Hind coxa only

slightly rugulose at base above, very smooth and shiny

on outer side; hind femur hardly four times as long

as broad and less than twice as long as hind coxa;

longer calcarium of hind tibia distinctly more than

half as long as metatarsus; tarsal claws simple. Radial

cell on wing margin slightly shorter than stigma;

second abscissa of radius on a line with intercubitus;

stub of third abscissa of cubitus about as long as second

abscissa; nervulus clearly postfurcal; hind wing about

4.4 times as long as wide; lower abscissa of basella

longer than nervellus and nearly half as long as

mediella but distinctly less than half as long as

maximum width of hind wing.

Abdomen stout; first tergite a little broader at apex

than long, shiny, weakly longitudinally rugulose,

polished apically, the dorsal keels not distinct, the

spiracles fully twice as far from each other as from

base of segment; second tergite 1.5 times as wide at base

as long, largely smooth and polished and with only a

little faint sculpture each side of the middle toward

base; third and following tergites smooth and polished;

ovipositor sheath about as long as distance from base

of scutellum to end of abdomen.

Black; mandibles reddish yellow; clypeus entirely

black; palpi and antennae brownish black; tegulae and

wing bases black; wings slightly infumated; legs

brownish yellow, the hind coxae a little darkened

basally; also the basal trochanters, the hind femora inwardly above and all tibiae and tarsi more or less

darkened.

MALE.—Unknown.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Known only from the holotype

female that was collected at Waterton, Alberta,

18 June 1956, by O. Peck by sweeping grass.

Orgilus grapholithae, new species

This species is extremely similar to pratensis, new

species, but it may be distinguished rather readily by its

dark tegulae and wing bases and by the much

better developed stubs of carinae at the apex of the

propodeum.

FEMALE.—Length around 3.5 mm. Head distinctly

broader than the thorax, also broader than high in

front view, and about 1.6 times as broad as long in

dorsal view; face a little broader (about 1.15 times)

than eye height, finely rugulose below antennal foramina, weakly punctate elsewhere, very shiny; clypeus

impunctate; malar space a little longer than clypeus

and nearly half as long as eye height (in ratio of

25:57); cheeks rounded, very finely shagreened; temples at mideye point 0.75 as wide as eyes, smooth and

shiny, slightly and gradually receding; ocellocular line

more than twice as long as diameter of an ocellus;

occipital carina strong at the sides, broadly interrupted

medially; antennae 29-segmented in the two available

females, most of the segments in apical third of

flagellum at least as broad as long.

Mesoscutum smooth and shiny; notauli very fine,

finely punctate anteriorly, minutely foveolate posteriorly; propodeum rugulose, narrowly polished at base

and with the five apical areas well defined, the stubs of

the longitudinal carinae that arise from posterior margin of propodeum well developed and extending more

than one-third the way toward base of propodeum; side

of pronotum largely rugulose but more or less smooth
NUMBER 30 51

below upper margin; mesopleuron smooth and

polished, the longitudinal furrow finely foveolate and

no punctures below the furrow; metapleuron smooth

and very shiny, rugulose posteriorly. Hind coxa rugulose at base above, largely smooth on outer side; hind

femur nearly five times as long as broad; longer calcarium of hind tibia slightly more than half as long

as metatarsus; tarsal claws simple. Radial cell on

wing margin as long as stigma; second abscissa of

radius on a line with intercubitus; third abscissa of

cubitus a little longer than second abscissa; nervulus

postfurcal by one-third its length; hind wing about 4.2

times as long as wide; lower abscissa of basella not

longer than nervellus and much less than half as long

as mediella, only one-third as long as maximum width

of hind wing.

Abdomen slender; first tergite about 1.5 times as

long as wide at apex, finely longitudinally rugulose,

the dorsal keels very weak or indistinct, spiracles only

a little farther from each other than from base of segment; second and following tergites smooth and very

shiny, the second very nearly or quite as long as broad

at base and usually with a little very faint shagreening

each side of middle on basal half; second suture faint;

ovipositor sheath as long as propodeum and abdomen

combined.

Black; palpi piceous; clypeus except at base and the

mandibles ferruginous; scape brownish below, flagellum brownish yellow basally, dark brown apically;

tegulae and wing bases blackish; legs brownish yellow, the hind coxae blackish toward bases, hind femora

inwardly and the middle and hind tarsi more or less

infuscated; wings very weakly infumated; second and

following tergites tinged with brown: basal sternites

brownish yellow.

MALE.—Like the female except as follows: Antennae

31-segmented, all flagellar segments elongate; second

tergite relatively a little shorter than in the female;

clypeus entirely black; antennae blackish; legs somewhat darker, all coxae and basal trochanters blackish

in the two available males.

HOLOTYPE.—USNM 70167.

DISTRIBUTION.—Known only from the type-series,

which consists of the female holotype and 3 paratypes

(2 males and 1 female), reared at Forest Grove,

Oregon, 24 June 1922, by S. E. Keen from larvae of

Grapholitha conversana Walsingham collected at

Seaside, Oregon.

Orgilus hyalinus, new species

Structurally this species is very similar to scaber, new

species, although the dorsal keels of the first tergite

are much weaker, but the species may be immediately

distinguished from scaber by its clear hyaline wings.

MALE.—Length about 3 mm. Head in dorsal view

about 0.6 as long as wide; face prominent, its straightline width barely greater than eye height, closely and

more or less confluently punctate and shiny; clypeus

very strongly convex, weakly punctate, not separated

from face by an impressed line, its base barely below

the level of the lower margins of the eyes; malar

space about one-third as long as eye height, shagreened; cheeks and temples smooth and polished;

temples slightly more than half as wide as eyes;

occipital carina narrowly interrupted at the middle;

ocellocular line less than twice as long as diameter of

an ocellus; antennae 28-segmented in the holotype.

Mesoscutum shiny, closely and rather strongly punctate, especially on the middle lobe; notauli very

shallow, foveolate, fading out caudad; disc of scutellum flat, polished and with a few weak punctures;

propodeum strongly rugose, the stubs of the carinae

that arise from the posterior margin prominent; side

of pronotum rugulose except broadly along upper

margin where it is nearly smooth; mesopleuron smooth

and shiny, the longitudinal furrow nearly straight and

foveolate but fading out anteriorly; metapleuron

entirely rugulose. Hind coxa about two-thirds as long

as hind femur, a little rugulose above, punctate on

outer side, shiny; hind femur less than four times as

long as wide; hind tibia with a cluster of short, stout

spines on outer side just before apex, its inner calcarium half as long as metatarsus; tarsal claws simple.

Radial cell on wing margin fully as long as stigma;

second abscissa of radius on a line with intercubitus;

stub of third abscissa of cubitus as long as second

abscissa; nervulus barely postfurcal; hind wing 4.3

times as long as wide; lower abscissa of basella not or

barely longer than nervellus and much less than half as

long as mediella.

Abdomen with tergites 1-6 sculptured, the first and

second finely rugulose, the others more or less granulose, the sixth weakly so; dorsal keels on first tergite

distinct but weak and short; first tergite only a little

longer than wide at apex; the second more than 1.5

times as broad at base as long and the second suture

sharply and deeply impressed.
52 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Black, including the clypeus entirely, mandibles,

tegulae and wing bases, and all coxae and trochanters;

femora largely black or blackish, the fore- and middle

pairs light brown apically; tibiae and tarsi more or

less infuscated; wings perfectly clear hyaline.

FEMALE.—Unknown.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Known only from a single male

collected at "Lost River, Onefour," Alberta, Canada,

3 June 1956, by O. Peck.

Orgilus imitator, new species

This form closely resembles disparilis, new species, but

it is much smoother and more shiny, and the middle

lobe of the mesoscutum is very different, being

unusually short and broad.

FEMALE.—Length about 3.8 mm. Head slightly

wider than thorax, in dorsal view fully twice as broad

as long; face about 0.75 as wide as eye height; eyes

very large; anterior tentorial pits above level of lower

eye margins; malar space not more than one-sixth as

long as eye height, finely granulose and mat like the

cheeks; temples largely smooth and shiny, sharply

receding and barely one-third as wide as eyes; occipital

carina complete but weak; vertex smooth and shiny;

ocellocular line slightly longer than the maximum

diameter of an ocellus; antennae 32-segmented in the

holotype, 34-segmented in the only other known

female, even the shortest segments of the flagellum

decidedly longer than broad, the apical segment with

a short terminal spicule.

Mesoscutum smooth and shiny, with only minute

and extremely shallow setigerous punctures; notauli

fine, shallow, weakly foveolate and short, fading out

near middle of scutum, and the median lobe unusually

short, extending only to the middle of the scutum;

disc of scutellum rather large, smooth and shiny, the

scutellar sulcus minutely foveolate; propodeum largely

smooth and shiny with only a little very weak roughening medially; side of pronotum entirely smooth and

polished; mesopleuron and metapleuron also smooth

and polished, the longitudinal furrow of mesopleuron

very fine, sinuate, and minutely foveolate. Hind coxa

smooth; hind femur somewhat less than five times as

long as broad; inner calcarium of hind tibia hardly

half as long as metatarsus; tarsal claw without a subbasal tooth or angulation. Radial cell on wing margin

about 1.3 times as long as stigma; second abscissa of

radius not nearly on a line with intercubitus; spur of

third abscissa of cubitus less than half as long as second

abscissa; nervulus clearly postfurcal; hind wing barely

four times as long as wide; lower abscissa of basella

hardly as long as nervellus and much less than half

as long as mediella.

Abdomen a little narrower than thorax; first tergite

1.5 times as long as broad at apex, nearly smooth, with

only a little faint shagreening; second tergite 1.5 times

as broad at base as long, faintly shagreened; the following tergites smooth and shiny; ovipositor sheath about

as long as distance from tegulae to end of abdomen.

Brownish yellow; in the holotype with broad blackish

markings on the mesonotal lobes and the upper

anterior angle of the mesopleuron blackish; metanotum

and propodeum black; abdomen more or less darkened

basally and apically; palpi pale yellow; antennae

brownish yellow, darker apically; tegulae and wing

bases yellow; legs testaceous, apex of hind femur

darkened, also the hind tibia except for a conspicuous

pale annulus at extreme base, and the hind tarsus;

wings hyaline, iridescent.

MALE.—Essentially like the female, but the antennae

are 31-segmented and the flagellum is dark brown.

HOLOTYPE.—USNM 70168.

DISTRIBUTION.—Known only from the short typeseries, which consists of the holotype female captured

at light at Deep Canyon, Riverside County, California, 23 November 1964, by M. E. Irwin; a paratype

female taken at Portland, Oregon, 18 September 1897,

by A. P. Morse; and a paratype male obtained from

"webbing of Gnorimoschema" at Presidio, Texas,

13 December 1943.

Orgilus immarginatus, new species

FIGURES 4, 4a, 4b, 37

The completely immargined occiput distinguishes

Uiis species from disparilis, which it otherwise closely

resembles.

FEMALE.—Length around 4 mm. Head distinctly

wider than thorax, in dorsal view more than twice as

wide as long, flattened behind; face smooth and shiny,

narrower than eye height; clypeus not separated from

face medially; anterior tentorial pits clearly above level

of lower eye margins; eyes enormous; malar space less

than half as long as longest segment of maxillary palpus

and hardly one-sixth the eye height; temples abruptly

receding, almost parallel with face, finely granulose and
NUMBER 30 53

mat like cheeks and vertex; occiput not margined even

on the sides; ocellocular line slightly longer than

distance between lateral ocelli and about equal to the

longest diameter of one of them; antennae 34- or

35-segmerrted in the available specimens, all flagellar

segments longer than broad, the apical segment terminating in a short but distinct spicule.

Thorax slender; mesoscutum smooth and shining;

notauli not distinctly foveolate and fading out apically;

scutellum somewhat convex; propodeum smooth and

shining, very gently convex, barely declivous caudad,

and with four very short stubs of carinae arising from

posterior margin; side of pronotum smooth above the

impression, finely shagreened below it; mesopleuron

and metapleuron smooth and polished, the longitudinal mesopleural furrow weakly impressed and not

foveolate. Hind coxa smooth and shining and twothirds as long as hind femur, which is hardly four times

as long as broad; inner calcarium of hind tibia more

than half as long as metatarsus; tarsal claw with a

weak subbasal tooth. Radial cell much longer than

stigma, very nearly attaining extreme apex of wing;

spur of third abscissa of cubitus less than one-third

as long as second abscissa; nervulus interstitial or

slightly postfurcal; hind wings about 4.8 times as long

as wide; lower abscissa of basella usually a little longer

than nervellus but clearly less than half as long as

mediella.

Abdomen about as long as thorax; first tergite at least

1.5 times as long as broad at apex, faintly coriaceous;

second tergite much broader than long, smooth and

shining, with only a faint suggestion of coriaceous sculpture; third and following tergites smooth and polished;

ovipositor sheath about as long as abdomen.

Uniformly pale yellow; antennal flagellum brownish

above; stemmaticum blackish; legs entirely yellow;

tegulae and wing bases pale yellow; wings clear hyaline.

MALE.—Like the female; antennae 33- or 34-segmented in the available specimens.

HOLOTYPE.—USNM 70169.

DISTRIBUTION.—Known only from the type-series

which consists of the following: Holotype female reared

from Gretchena bolliana (Slingerland), 22 July 1929,

by J. M. Langston at A. & M. College, Mississippi;

2 males, Pecan, Mississippi, June 1915, J. B. Gill, without host record; 2 females, Pascagoula, Mississippi,

28 June 1915, J. B. Gill; 1 female from Acrobasis

juglandis (LeBaron), Fort Adams, Mississippi, 5 April

1929, W. L. Grey; 1 male from Laspeyresia caryana

(Fitch) on pecan, A. & M. College, Mississippi, 29 May

1929, J. M. Langston; 1 female and 1 male, Crestview,

Florida, 14 May 1938, and 1 male, Savannah, Illinois,

8 August 1946.

Orgilus impiger, new species

FIGURE 45

This species closely resembles oregonensis, from which

it may be distinguished, however, by its shorter head,

narrower and more receding temples, somewhat more

slender female antennae, and the partly sculptured

second tergite.

FEMALE.—Length around 4 mm. Head hardly

wider than thorax, in dorsal view about 0.6 as long

as wide; face about 1.2 times as wide as eye height,

closely, often confluently, punctate below and rugulose

above; clypeus with distinct scattered punctures; malar

space finely granulose, longer than clypeus and just

about half as long as eye height; cheeks granulose and

dull; temples smooth and shiny; about 0.75 as wide

as eyes, receding gradually and somewhat rounded;

occipital carina broadly interrupted medially; ocellocular line about twice as long as diameter of an

ocellus; vertex and back of head smooth and shiny,

at most with a few weak punctures; maxillary palpi

hardly as long as width of head; antennae 29- to 32-

segmented in the available specimens, some segments

in apical fourth of flagellum about as wide as long.

Middle lobe of mesoscutum usually closely, rather

strongly punctate; notauli sharply impressed and

foveolate; disc of scutellum convex, smooth and

polished, sometimes with a few weak punctures; propodeum convex, strongly rugose, the stubs of the longitudinal carinae that arise from the posterior margin

short and rather weak so that the apical areas are

poorly defined; side of pronotum closely rugulose,

weakly so at upper margin; mesopleuron smooth and

polished, the longitudinal furrow a little sinuate and

completely foveolate; metapleuron usually largely

rugulose, coarsely so posteriorly, sometimes smooth

and shiny in the anterior angle. Hind coxa rugulose,

most strongly so basally on dorsal edge, but also

roughened on the outer side; hind femur twice as long

as hind coxa and about five times as long as broad;

inner calcarium of hind tibia barely more than half

as long as metatarsus; tarsal claws simple. Radial cell

on wing margin just about as long as stigma; second

abscissa of radius on a line with intercubitus; stub of
54 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

third abscissa of cubitus about as long as second

abscissa; nervulus somewhat postfurcal; hind wing

about 4.2 times as long as wide; lower abscissa of

basella just about as long as nervellus and much less

than half as long as mediella or maximum width of

hind wing.

Abdomen a little narrower than thorax; first tergite

about 1.25 times as long as broad at apex, closely

rugulose except basad of the spiracles where it is

smooth and polished, the dorsal keels not developed;

second tergite about 1.2 times as broad at base as

long, usually largely smooth, but more or less punctate

or finely rugulose on basal half; third and following

tergites smooth and polished; ovipositor sheath only

a little longer than the abdomen.

Black; clypeus black; palpi and antennae black or

blackish; tegulae and wing bases black; wings weakly

infumated; legs brownish, the fore- and middle coxae

reddish yellow, the hind coxae black basally, basal

trochanters of all legs more or less darkened, all femora

streaked with black on the inside above, tibiae and

tarsi more or less darkened; abdomen completely

black above and blackish or piceous below.

MALE.—Unknown.

HOLOTYPE.—In the collection of the University of

California.

DISTRIBUTION.—Known only from the type-series

consisting of seven females (one the holotype) collected

on Erigonum nudum at Mt. Shasta City, Siskiyou

County, California, 2 July 1958, by J. Powell.

Orgilus indagator Muesebeck

FIGURE 18

Orgilus indagator Muesebeck, 1967a, p. 135.

This species is not redescribed here since it was described in detail in the above paper. All the material

recorded there was from Minnesota. Since publication

of the description I have seen two additional specimens, from the Province of Quebec.

HOLOTYPE.—USNM 69367.

Orgilus infrequent, new species

Except for its lighter coloring this species is exceedingly like melissopi, from which it may be distinguished, however, as indicated in the description

of that species and in the key.

FEMALE.—Length about 4.6 mm. Head about as

wide as thorax, and in dorsal view fully twice as wide

as long; face weakly convex, finely punctate, and only

very slightly wider than eye height; anterior tentorial

pits on a line with lower eye margins; malar space

hardly one-fourth as long as eye height; cheeks and

lower temples minutely granulose and mat; temples

strongly receding, about 0.6 as wide as eyes; occipital

carina complete; ocellocular line a little more than

twice as long as diameter of an ocellus, the distances

between the ocelli very slightly greater than the

diameter of one of them; antennae 33- or 34-segmented in the available specimens, most of the segments of the apical fourth fully as broad as long, the

apical segment with a minute terminal spicule.

Thorax stout; mesoscutum smooth and very shiny,

with scattered weak punctures on middle lobe; the

notauli finely foveolate anteriorly and the depression

in which they meet not at all rugulose or punctate;

unlike the condition in melissopi, the narrow strip

along posterior margin of mesoscutum impunctate;

propodeum very shiny, convex, rather strongly punctate medially, sometimes confluently so there but very

weakly punctate laterally; side of pronotum smooth

and polished above the impression, shagreened or, in

part, weakly rugulose below it; mesopleuron and

metapleuron smooth and polished, the longitudinal

furrow of the mesopleuron sinuate and finely foveolate. Hind coxa smooth and shiny outwardly but with

a few weak punctures, delicately shagreened on the

upper edge; hind femur four times as long as wide;

longer calcarium of hind tibia not more than half as

long as metatarsus; tarsal claw with a strong subbasal

tooth. Radial cell large, on wing margin 1.6 times as

long as stigma; second abscissa of radius not nearly

on a line with intercubitus; stub of third abscissa of

cubitus more or less punctiform; nervulus slightly postfurcal ; hind wing barely more than four times as long

as wide; lower abscissa of basella longer than nervellus and more than half as long as mediella.

Abdomen smooth and shiny, at most with a little

longitudinal striation laterally on the first tergite; first

tergite much longer than wide at apex; second tergite

nearly as long as wide at base; ovipositor sheath

nearly as long as thorax and abdomen combined.

Brownish yellow; antennae dark brown, blackish

apically; palpi piceous; stemmaticum black; propodeum somewhat darkened medially; tegulae and wing

bases pale yellow; wings clear hyaline; legs concolorous
NUMBER 30 55

with the body, the middle and hind femora black at

apices, the hind tibia infuscated but with a narrow

yellowish-white annulus at extreme base and a broader

yellowish band at the middle, all the tarsi more or less

infuscated; first tergite, except laterally at apex, and

the second medially, somewhat darkened.

MALE.—Unknown.

HOLOTYPE.—USNM 70170.

DISTRIBUTION.—Known from three female specimens : The holotype from Florida Caverns State Park,

Jackson County, Florida, collected by H. V. Weems,

Jr., 21 August 1958; one paratype collected by R. C.

Shannon at Mathias Point, Virginia, 5 September

1931, and a second paratype from Martha's Vineyard,

Massachusetts, collected by C. W. Johnson in August

1931.

Orgilus inopinus, new species

This species resembles cerinus, new species, in color, but

it differs in many structural details, including its finely

granulose or shagreened face and hind coxae, longer

head, larger eyes, less slender antennae and relatively

narrower hind wings.

FEMALE.—Length about 3 mm. Head slightly

wider than thorax, in dorsal view 0.7 as long as wide;

face about 1.25 times as wide as eye height, finely

granulose or shagreened and mat and with some scattered punctures; clypeus shiny and with a few punctures; malar space slightly more than half as long as

eye height, shagreened and mat; cheeks also shagreened

and rather mat; temples about 0.75 as wide as eyes,

shagreened posteriorly, smooth and shiny adjacent

to eyes; occipital carina rather narrowly interrupted

medially; ocellocular line a little more than twice as

long as diameter of an ocellus; antennae of holotype

29-segmented, a few of the preapical segments about

as wide as long.

Mesoscutum largely smooth but with a little faint

shagreening in the vicinity of the notauli and some

very weak and indefinite punctures; notauli not distinctly foveolate, meeting just before apex of scutum

in a sharply acute angle; disc of scutellum smooth;

propodeum largely granulose on basal half, with a small

smooth and polished area each side at extreme base,

somewhat rugulose posteriorly and with rather prominent stubs of longitudinal carinae arising from posterior margin setting off more or less smooth and shiny

apical areas; side of pronotum granulose, rugulose in

the impression; mesopleuron smooth and shiny above

the finely foveolate longitudinal furrow, weakly

but distinctly alutaceous below it; metapleuron

shagreened and mat except at posterior margin

where it is rugulose. Hind coxa about half as long

as hind femur, finely granulose and mat above and

on outer side; hind femur 4.5 times as long as wide;

inner calcarium of hind tibia slightly more than

half as long as metatarsus; tarsal claws simple. Radial

cell on wing margin slightly longer than stigma; second

abscissa of radius on a line with intercubitus; stub of

third abscissa of cubitus as long as second abscissa;

nervulus only slightly postfurcal; hind wing five times

as long as wide, the anterior and posterior margins

virtually parallel; lower abscissa of basella longer than

nervellus and very nearly half as long as mediella or

maximum width of hind wing.

Abdomen slender; first tergite about 1.5 times as

long as wide at apex, granulose, the dorsal keels not

distinct; second tergite nearly or quite as long as

broad at base, faintly shagreened medially toward base

and very shiny; second suture well defined; remainder

of abdomen smooth and polished; ovipositor sheath

about as long as propodeum and abdomen combined.

Reddish yellow; an indefinite spot on middle of frons

and vertex, the area each side of scutellar disc and the

apical abdominal tergites, black; antennae reddish

yellow on basal two-thirds, blackish apically; palpi

brown; tegulae and wing bases yellow; wings very

lightly inf umated; legs brownish yellow, apices of hind

femora and of hind tibiae and the apical segments of all

tarsi a little darkened.

MALE.—Darker than the female: The metapleura

and propodeum blackish; the abdomen dark brown

basally instead of reddish yellow, and all tarsi entirely

darkened. The antennae are 30-segmented and are

more elongate than in the female.

HOLOTYPE.—USNM 70171.

DISTRIBUTION.—Known only from the holotype female collected 21 June 1934, in Clay County, Iowa, by

H. C. Knutson, and a male paratype taken by the

same collector 20 June 1934, in Black Hawk County,

Iowa.

Orgilus insularis, new species

This species differs from known related species especially in its completely rugulose metapleura.

FEMALE.—Length about 3 mm. Head about 1.2

times as wide as thorax, in dorsal view about 0.55
56

as long as broad; face about 1.2 times as wide as eye

height, finely shagreened over most of its surface, rather

mat laterally, more shiny medially; malar space half

as long as eye height, slightly longer than longest segment of maxillary palpus, finely granulose and dull;

clypeus smooth and shiny, with a few scattered punctures; cheeks shagreened; temples rather strongly receding, about 0.75 as wide as eyes, smooth and polished

except adjacent to occipital carina where they are finely

shagreened; frons smooth and polished medially,

shagreened and rather dull laterally; ocellocular line

more than twice as long as diameter of an ocellus;

antennae of holotype 32-segmented, some segments of

apical third of flagellum fully as broad as long.

Mesoscutum very shiny, with poorly defined and

very shallow punctures; notauli sharply impressed and

strongly foveolate; disc of scutellum polished; propodeum strongly rugose on dorsal face, the posterior

face with five large, somewhat impressed and more

or less smooth and shiny areas at the posterior margin,

these areas separated by prominent stubs of longitudinal carinae that arise at the posterior margin of

the propodeum and extend more than one-third the

distance to the base; side of pronotum rugulose,

weakly so along the upper margin; mesopleuron

smooth and polished, the longitudinal furrow strongly

foveolate; metapleuron completely rugulose. Hind

coxa slightly more than half as long as hind femur and

coarsely rugulose above and on the upper part of the

outer side; hind femur just about four times as long

as wide; inner calcarium of hind tibia half as long

as metatarsus; tarsal claws simple. Radial cell on wing

margin slightly shorter than stigma; second abscissa

of radius on a line with intercubitus; stub of third

abscissa of cubitus a little longer than second abscissa;

nervulus virtually interstitial; hind wing about five

times as long as wide; lower abscissa of basella much

longer than nervellus and just about half as long as

mediella or as maximum width of hind wing.

Abdomen as long as thorax; first tergite 1.25 times

as long as wide at apex, closely rugulose punctate and

dull, the basal dorsal keels weak but extending to the

end of the basal third of the tergite, the spiracles twice

as far from each other as from base of tergite and

three times as far from apex as from base; second

tergite about 0.6 as long as wide at base, entirely

closely rugulose punctate; third tergite finely rugulose

punctate medially on basal two-thirds, smooth laterally

and posteriorly; remainder of dorsum of abdomen

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

smooth and polished; ovipositor sheath just about as

long as abdomen.

Black; antennae brown, a little paler below toward

bases; palpi and tegulae black; wings slightly but

distinctly infumated; legs largely testaceous, the hind

coxae blackish on basal half, all femora more or less

darkened above on inner sides and all tibiae and tarsi

more or less darkened; basal abdominal sternites

testaceous.

MALE.—Unknown.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Known only from the holotype

female, which was reared from an unidentified microlepidopterous larva at White Point Beach, Prince

Edward Island, 6 August 1934, by J. McDunnough.

Orgilus intermedius, new species

Because of its narrow and proturbant face, relatively

large ocelli, and very short malar space this species is

placed in the group represented by obscurator (Nees)

and its close relatives, although it differs from other

forms of this group in its more convex and somewhat

receding temples. In the structure and sculpture of the

thorax and abdomen it is suggestive of zonalis, new

species, but its narrow face, short malar space, and

narrower temples distinguish it immediately from that

form.

FEMALE.—Length about 3.5 mm. Head not wider

than thorax, in dorsal view about 0.75 as long as wide,

weakly excavated behind; face prominent, a little

narrower than eye height, minutely granulose or shagreened; malar space about 0.3 as long as eye height

and much shorter than longest segment of maxillary

palpus; anterior tentorial pits barely below level of

lower eye margins; clypeus strongly convex and longer

than the width of its apical truncature; cheeks weakly

shagreened on lower half; temples 0.75 as wide as eyes,

rounded and somewhat receding, smooth and polished;

occiput carinately margined only at the sides; ocellocular line 1.5 times as long as diameter of an ocellus;

antennae of holotype incomplete, 27 segments remaining, none of the flagellar segments as broad as long.

Thorax slender; notauli deeply and sharply

impressed and finely foveolate; middle lobe of

mesoscutum and the parts of the lateral lobes adjacent

to the notauli, as well as the disc of scutellum, finely

shagreened and rather mat; propodeum nearly horizontal, granulose and with some rugulae; side of
NUMBER 30 57

pronotum largely finely granulose and dull, rugulose in

the impression; mesopleuron faintly alutaceous below

the narrow, foveolate, longitudinal furrow, shiny; metapleuron evenly granulose and dull. Hind coxa finely

granulose and dull above and on outer side; hind

femur not more than four times as long as broad;

inner calcarium of hind tibia fully half as long as

metatarsus; tarsal claws simple. Radial cell on wing

margin hardly as long as stigma; second abscissa of

radius on a line with intercubitus; stub of third abscissa

of cubitus as long as second abscissa; nervulus nearly

interstitial; hind wing more than five times as long

as wide; lower abscissa of basella much longer than

nervellus, more than half as long as mediella and also

more than half as long as maximum width of hind

wing.

Abdomen a little longer than thorax; first tergite

nearly 1.5 times as long as wide at apex, strongly

granulose and mat, the dorsal keels indistinct; second

tergite about as long as broad at base, noticeably wider

at apex than at base, and closely granulose like the

first; second suture fine but sharply impressed; third

tergite with basal half or more finely granulose, or

shallowly confidently punctate; remainder of dorsum

of abdomen smooth and shiny; ovipositor sheath about

as long as propodeum and abdomen combined.

Black; antennae testaceous, brownish black apically,

the scape brownish above; palpi pale; legs testaceous;

apical half of hind femur, apical third or more of

hind tibia, and more or less of the tarsi, darkened;

tegulae and wing bases yellow; wings weakly infumated; second tergite brownish with narrow reddishyellow lateral margins on basal half; basal two sternites

yellow.

MALE.—In general like the female. The segments of

the antennal flagellum, however, are all noticeably

longer than broad, the temples are relatively a little

wider, sometimes the tegulae are brownish, the hind

coxae are blackish basally, and the hind femora and

tibae and all the tarsi are more extensively darkened.

HOLOTYPE.—USNM 70172.

DISTRIBUTION.—Known only from the type-series,

which consists of the following: The holotype female

and 1 male collected at Rosslyn, Virginia (no date on

labels), by H. H. Smith; 1 male from Cabin John,

Maryland, 29 June 1917, R. M. Fouts; 1 male from

Plummers Island, Maryland, 18 August 1912, J. R.

Malloch, and 1 male from Glen Echo, Maryland,

16 June 1919, R.M. Fouts.

Orgilus invictus, new species

In many respects this species is very similar to frigidus,

new species, but it is readily distinguished by its ferruginous head and unusually stout female antennae.

FEMALE.—Length about 4.2 mm. Head slightly

wider than thorax, in dorsal view 0.65 as long as wide;

face about 1.2 times as wide as eye height, finely,

closely punctate on a shagreened surface; clypeus

strongly convex and closely punctate, not separated

from the face medially by an impression; malar space

only very slightly longer than clypeus and not quite

half as long as eye height; cheeks shagreened and dull;

temples only very slightly receding, at mideye point

about as wide as eyes, smooth and shiny near eyes but

shagreened and somewhat mat along the strongly

reflexed occipital carina; occipital carina broadly interrupted medially; ocellocular line more than twice as

long as diameter of an ocellus; antennae 35-segmented

in the holotype, most of the flagellar segments after

the fifteenth broader than long.

Mesoscutum rather shiny, but with numerous

extremely shallow punctures; notauli sharply impressed, finely foveolate and meeting in a very acute

angle; disc of scutellum small, weakly convex, with a

few very shallow punctures; propodeum finely rugulose,

with a transverse smooth and polished area each side

at base, the stubs of the carinae that arise from the

posterior margin rather poorly developed, especially

the median ones; side of pronotum largely rugulose,

granulose and mat at anterior margin and narrowly

nearly smooth along upper margin; mesopleuron

smooth and shiny, the longitudinal furrow irregularly

foveolate, the surface below it faintly alutaceous and

a few weak punctures below the furrow anteriorly;

metapleuron closely rugulose over most of its surface

but a small area in the anterior angle punctate with

a little weak shagreening between the punctures, rather

mat. Hind coxa about half as long as hind femur,

somewhat rugulose on upper edge toward base and

finely granulose and dull on outer side; hind femur

nearly five times as long as broad; inner calcarium of

hind tibia more than 0.6 as long as metatarsus; tarsal

claws simple. Radial cell on wing margin hardly as

long as stigma; second abscissa of radius on a line with

intercubitus; stub of third abscissa of cubitus about

as long as second abscissa; nervulus barely postfurcal;

hind wing 4.5 times as long as wide; lower abscissa of

basella slightly longer than nervellus but less than half

as long as mediella.
58 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Abdomen considerably longer than thorax and on

third tergite fully as wide; first tergite about 1.3 times as

long as wide at apex and finely closely rugulose, even in

the basal impression, longitudinally so laterally, the

dorsal keels not distinct, the spiracles more than twice

as far from apex as from base; second tergite 0.9 as

long as broad at base, finely closely rugulose except

very narrowly at posterior margin where it is smooth

and shiny; third tergite very finely rugulose on basal

two-thirds, smooth and polished apically; the following

tergites polished; ovipositor sheath as long as propodeum and abdomen combined.

Head reddish testaceous, stemmaticum black; basal

half of antenna reddish yellow, the scape above and the

apical half of the flagellum darkened; palpi piceous;

thorax black; tegulae and wing bases yellowish brown;

wings subhyaline on basal third, somewhat infumated

on apical two-thirds; legs yellowish brown, the trochanters and femora of fore- and middle legs blackish

inwardly, hind coxae darkened on inner side and

basally below, hind trochanters and femora black on

inner side, the latter also darkened outwardly toward

apices, and the hind tibiae and tarsi more or less

piceous; abdomen black; venter entirely blackish.

MALE.—Unknown.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Known only from the holotype

female collected at Hebron, Labrador, 11 August 1954,

by E. E. Sterns.

Orgilus laeviventris (Cresson)

Ischius laeviventris Cresson, 1872b, p. 182.

Orgilus laeviventris (Cresson).—Cresson, 1887, p. 228.—

Muesebeck and Walkley, 1951, p. 111.

Muesebeck and Walkley (1951) suppressed laeviventris

as a synonym of mellipes (Say), but I now believe that

action was not warranted. The unique type differs

from what is currently identified as mellipes in its completely smooth and polished second tergite, which is as

long as broad at base; in its more slender hind femora,

which are about five times as long as broad; in its

almost completely smooth and polished first tergite, and

in having all coxae darkened. Unfortunately, the holotype is a headless male. Because head characters are

very important in this group, and because no other

specimen has been encountered that can definitely be

identified as laeviventris, it has seemed advisable to

omit this form from the key and to treat it, at least

temporarily, as a doubtful species.

HOLOTYPE.—USNM 1640.

DISTRIBUTION.—Known only from the holotype

male from Texas.

Orgilus lateralts (Cresson)

FIGURES 1, la, \b, 35, 44

Eubadizon lateralis Cresson, 1872a, p. 229.

Orgilus kearfotti Ashmead, 1903, p. 144.

Orgilus maculiventris (Cresson).—Cushman, 1920, p. 290.—

Nickels, Pierce, and Pinkney, 1950, p. 12.—Muesebeck and

Walkley, 1951, p. 111.

I have seen the holotypes of lateralis, kearfotti, and

maculiventris, and I think there can be no doubt that

kearfotti is the same as lateralis. However, the repeated

identification of this species as maculiventris has been

incorrect; the latter is a very different form. The true

lateralis is most like walleyi, new species, from which

it may be distinguished as shown in the description of

the latter species.

FEMALE.—Length usually ranging from 3 to 4 mm.

Head about as wide as thorax, in dorsal view nearly

twice as wide as long; face about 1.15 times as wide as

eye height, finely punctate and shiny; anterior tentorial

pits on a line with level of lower eye margins; malar

space 0.3 as long as eye height; cheeks minutely granulose and mat; temples largely smooth, strongly receding, at mideye point hardly half as wide as eyes; occipital carina complete; ocellocular line about twice as

long as diameter of an ocellus; antennae normally 27-

to 32-segmented, even the shortest flagellar segments

slightly longer than broad, the apical segment with a

very short terminal spicule.

Mesoscutum shiny, with very shallow punctures; notauli sharply impressed and very finely, sometimes indistinctly, punctate; propodeum more or less punctate

or rugulose punctate medially and finely granulose to

nearly smooth laterally; side of pronotum and the

mesopleuron smooth and shiny, the mesopleural furrow sinuate and evenly, finely foveolate; metapleuron

often faintly alutaceous. Hind coxa three-fourths as

long as hind femur and very finely coriaceous on the

outer side; hind femur about 3.7 times as long as wide;

inner calcarium of hind tibia about half as long as

metatarsus; tarsal claw with a well developed subbasal

tooth. Radial cell about 1.3 times as long as stigma;

second abscissa of radius not nearly on a line with intercubitus; stub of third abscissa of cubitus punctiform;

nervulus postfurcal; hind wing usually nearly 4.5 times
NUMBER 30 59

as long as wide; lower abscissa of basella much longer

than nervellus and usually half as long as mediella.

Abdomen usually a little narrower than thorax; first

tergite usually about 1.5 times as long as broad at apex,

confluently punctate or very finely rugulose, the dorsal

keels weak and very short; second tergite around 1.2

times as broad at base as long, confluently punctate or

finely rugulose punctate, more weakly so laterally;

third tergite similarly but more weakly sculptured;

fourth and fifth tergites usually somewhat punctate;

ovipositor sheath usually about as long as distance from

tegulae to end of abdomen, but in some of the smallest

specimens, particularly those from Coleophoridae, the

ovipositor sheath may be significantly shorter, occasionally only very slightly longer than the abdomen.

Honey yellow or ferruginous, usually varied with

black; in the darkest specimens the vertex and occiput

are largely darkened, and also the dorsum of the

thorax and the abdomen, but the abdomen has yellowish markings at least at the sides; palpi usually yellow;

antennae yellowish beneath, at least basally, brown

above and toward apices beneath; wings clear hyaline;

tegulae and wing bases yellow; legs honey yellow or

ferruginous, the apices of the hind femora, usually the

hind tibiae except at bases, where they are yellowish

white, and the tarsi, more or less darkened.

MALE.—Essentially like the female but usually a

little more slender.

HOLOTYPES.—That of lateralis is in the Academy of

Natural Sciences of Philadelphia; that of kearfotti is

in the United States National Museum (USNM 6960).

DISTRIBUTION.—The holotype of lateralis is from

Illinois, that of kearfotti from Caldwell, New Jersey.

Other material examined indicates a range from New

Brunswick, Quebec, and Ontario to Florida and the

Gulf Coast, and from there west to California; it also

includes specimens from the state of Nuevo Leon,

Mexico. Hosts recorded on the labels of the specimens

include Acrobasis caryae Grote, A. comptoniella Hulst,

A. indiginella (Zeller), A. juglandis (LeBaron), Pulicalvaria thujaella (Kearfott), P. piceaella (Kearfott),

Petrova albicapitana Busck, Coleophora sp. on Betula,

C. caryaefoliella Clemens, C. ulmifoliella McDunnough, Coleotechnites mackiei (Keifer), Recurvaria

juniperella Kearfott, Mompha sp., and Choristoneura

fumiferana (Clemens). I am not completely satisfied

that the present treatment applies to only one species,

but thus far I have been unable to discover satisfactory

bases for distinguishing different forms.

Orgilus lautus, new species

This species is very similar to melissopi, new species,

but it is distinguished by its smoother face, its smoother,

virtually impunctate metapleuron and outer side of

hind coxa, the much less extensively punctate

mesoscutum, and the paler antennae, which differ also

in having fewer segments.

FEMALE.—Length about 3.8 mm. Head fully twice

as wide as long in dorsal view; face flat, smooth and

shiny, with only faint, minute punctures, slightly wider

than eye height (in ratio of 70:65) ; malar space about

one-fourth as long as eye height, shagreened and mat

like the cheeks and lower temples; temples a little

more than half as wide as eyes, sharply receding from

eye margins and rather flat, smooth and polished

above mideye level; occipital carina complete; ocellocular line at least twice as long as diameter of an

ocellus; antennae of holotype 27-segmented, even the

shortest segments of flagellum slightly longer than

broad.

Mesoscutum smooth and shiny, very weakly punctate

on the lobes, smooth and polished along posterior

margin behind the large punctate depression at the end

of the middle lobe; notauli complete and finely foveolate; propodeum nearly smooth laterally, somewhat

rugulose punctate medially, the stubs of the apical

longitudinal carinae weak; side of pronotum smooth

and polished behind and above the impression, a little

shagreened anteriorly; mesopleuron smooth and

polished, the longitudinal furrow complete, strongly

sinuate and finely foveolate; metapleuron smooth and

shiny. Hind coxa smooth on outer side; hind femur 3.6

times as long as wide; longer calcarium of hind tibia

just about half as long as metatarsus; tarsal claw

with a broad subbasal tooth. Radial cell on wing

margin 1.5 times as long as stigma; second abscissa of

radius not nearly on a line with intercubitus; stub of

third abscissa of cubitus extremely short, punctiform;

nervulus postfurcal by half its length; hind wing about

4.4 times as long as wide; lower abscissa of basella

longer than nervellus and nearly half as long as

mediella.

Abdomen about as broad as thorax; first tergite 1.3

times as long as wide at apex, the surface finely

alutaceous and with some weak rugulae, the dorsal

keels well developed and extending to the middle of the

tergite; second tergite about 1.5 times as wide at base

as long, faintly alutaceous and shiny; remainder of

abdomen smooth and shiny; ovipositor sheath as long
60 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

as distance from base of scutellum to end of abdomen.

Head testaceous but with a large median blackish

area on frons and vertex that extends onto the back

of the head where it broadens considerably; palpi pale;

antennae brownish yellow below on more than basal

half, darkened above and toward apices; thorax dark

ferruginous, with the mesonotal lobes, upper parts of

the pleura and the propodeum black or blackish; legs,

including all coxae, testaceous, the hind tibia darkened

narrowly near base and at apex but the extreme base

whitish, apical tarsal segments dark; tegulae and wing

bases pale yellow; wings hyaline; abdomen above

largely piceous varied with ferruginous, especially on

the third and fourth tergites; venter of abdomen

entirely yellow.

HOLOTYPE.—USNM 70173.

DISTRIBUTION.—Known only from the holotype

female taken in Livingston County, Michigan, 28 May

1944, by R. R. Dreisbach.

Orgilus lepidus Muesebeck

FIGURE 24

Orgilus lepidus Muesebeck, 1967b, p. 177.

This Neotropical species has been described in detail in

the above paper and is therefore not redescribed here.

As pointed out in that article this parasite of the potato

tuberworm has been released in California. Whether it

has become firmly established there is not yet known.

Since the publication of the description I have learned

that O. lepidus has also been introduced into India

and Australia in the hope that it may eventually became helpful in controlling the potato tuberworm,

Phthorimaea operculella (Zeller), in those areas.

HOLOTYPE.—USNM 69536.

Orgilus levis, new species

This species resembles politus in its smooth and polished abdomen and hind coxae, but it may be distinguished by the much narrower hind wing, which is also

differently shaped, being broadly rounded at the apex

and having the anterior and posterior margins parallel,

by the relatively shorter hind femora and by the nearly

horizontal and rugulose propodeum; also by the blackish mandibles and darker wings.

MALE.—Length of holotype 4 mm. Head conspicuously wider than thorax, in dorsal view about 0.6

as long as wide. Face a little narrower than eye height

(in ratio of 60:65), shiny, and with some minute and

faint punctures; malar space hardly one-third as long

as eye height, and finely shagreened like the lower

cheeks; temples rounded, smooth and polished, about

0.75 as wide as eyes; occipital carina broadly interrupted medially; ocellocular line twice as long as

diameter of an ocellus; antennae 35-segmented in the

holotype, 33-segmented in the smaller paratype.

Thorax very narrow; mesoscutum shiny, with minute and very shallow setigerous punctures; mesonotal

lobes very prominent because of the deeply impressed

notauli, which are very fine and not clearly foveolate;

propodeum nearly horizontal, finely rugulose, the

stubs of longitudinal carinae that arise from the posterior margin very short; side of pronotum shiny,

weakly rugulose anteriorly and in the impression;

mesopleuron smooth and shiny, the longitudinal furrow straight and weak, rather weakly foveolate; metapleuron shiny and largely smooth, rugulose posteriorly.

Hind coxa smooth and shiny, 0.75 as long as hind

femur, which is less than four times as long as broad;

inner calcarium of hind tibia less than half as long as

metatarsus, the outer calcarium much shorter than the

second tarsal segment. Radial cell on wing margin not

quite as long as stigma; second abscissa of radius on a

line with intercubitus; nervulus a little postfurcal;

hind wing five times as long as wide, broadly rounded

at apex, the anterior and posterior margins virtually

parallel; lower abscissa of basella very nearly or quite

half as long as mediella or maximum width of hind

wing.

Abdomen completely smooth and polished, with no

trace of sculpture, even on the first tergite, which is

also without any trace of the dorsal keels; first tergite

nearly 1.5 times as long as wide at apex, the second

nearly as long as wide at base.

Black; clypeus, mandibles, palpi, and antennae

black; tegulae and wing bases brown; wings uniformly a little smoky; legs, including all coxae entirely, testaceous, the tibiae and tarsi more or less

darkened.

FEMALE.—Unknown.

HOLOTYPE.—USNM 70174.

DISTRIBUTION.—Known only from two males (one

the holotype) taken in Bradford County, Florida, 8

December 1962, by F. W. Mead, additionally labeled

as from "pine flatwoods and drained cypress ponds."
NUMBER 3 0 61

Orgilus lissus, new species

This species is very similar to fulgens, new species, but

the face, propodeum, and first tergite of the abdomen

are much smoother.

FEMALE.—Length 4.3 mm. Head a little narrower

than thorax, deeply excavated behind, in dorsal view

about 0.9 as long as wide; face narrower than eye

height (in ratio of 65:75), smooth and shiny with only

a few weak punctures; clypeus slightly longer than

malar space, not sharply separated from face medially,

sparsely punctate; malar space one-third as long as eye

height; cheeks and temples smooth and polished, the

latter very nearly as wide as eyes and flat, not at all

receding; vertex polished; occiput carinately margined

only at the sides; ocellocular line a little less than twice

as long as diameter of an ocellus; antennae of holotype

incomplete.

Thorax much higher than wide; mesoscutum very

smooth and shiny, the lobes impunctate; notauli very

fine, weakly and incompletely foveolate; disc of scutellum small, convex, polished; basal third of propodeum

completely smooth and shiny, the remainder with only

a little weak rugulosity; side of pronotum largely rugulose; mesopleuron smooth and polished, the longitudinal furrow shallow and finely foveolate; metapleuron

smooth and polished, rugulose only very narrowly at

the lower posterior margin. Hind coxa smooth and

shiny; hind femur barely twice as long as hind coxa

and slightly less than four times as long as wide; inner

calcarium of hind tibia half as long as metatarsus;

tarsal claws simple. Radial cell on wing margin barely

longer than stigma; second abscissa of radius on a line

with intercubitus; nervulus barely postfurcal; hind

wing 4.5 times as long as wide; lower abscissa of

basella half as long as mediella.

Abdomen about as long as head and thorax combined; first tergite almost entirely smooth, only a little

faint sculpture near the middle laterally; second tergite about 1.25 times as broad at base as long, finely

rugulose punctate on basal third, otherwise smooth

and shiny; third tergite virtually smooth, with only a

little very weak punctation near base; ovipositor

sheath a little shorter than thorax and abdomen

combined.

Black; clypeus black; mandibles ferruginous; palpi

black; antennal scape black, the flagellum brown below

toward base; blackish apically; legs testaceous, the

apices of the hind femora and of the hind tibiae and

all the tarsi more or less darkened; tegulae black, wing

bases yellowish brown; wings subhyaline; abdomen entirely black above and below.

MALE.—Unknown.

HOLOTYPE.—USNM 70175.

DISTRIBUTION.—Known only from the holotype female, which was taken at Sierraville, Sierra County,

California, 14 July 1958, by R. M. Bohart.

Orgilus longiceps Muesebeck

FIGURE 32

Orgilus longiceps Muesebeck, 1933, p. 53.

This species most closely resembles obscurator (Nees)

and buccatus, new species. It differs from both in

being not so dark, with the legs largely reddish yellow,

and the clypeus except at base, the mandibles and

more or less of the antennae, reddish, and the wings

almost clear hyaline. It differs further from obscurator

in its more slender body, its longer and narrower

head, which is more strongly excavated behind, its

shorter malar space, flaring temples and more finely

punctate face, and in its extensively sculptured third

tergite. From buccatus, which it resembles in the shape

of the head, including the flaring temples, it differs in

color, as noted above, and also in its more slender

form and sculptured third tergite.

HOLOTYPE.—USNM 44853.

DISTRIBUTION.—In addition to the type-series, from

Japan, the U.S. National Museum has 26 specimens,

all of them, like the type material, reared from Grapholitha molesta (Busck) in Japan. The species was

introduced into the United States by the U.S. Department of Agriculture between 1933 and 1937, and it

was released in G. molesta infestations in thirty widely

separated localities from Massachusetts to Michigan

south to South Carolina and Arkansas (Allen, 1962,

p. 119). Although it now seems doubtful that longiceps

has become established here, it is thought advisable to

include it in the present treatment.

Orgilus lunaris, new species

This form is extremely similar to jerus, new species,

but the tegulae and wing bases are yellow, the temples

are less receding, and the wings are somewhat infumated apically.

FEMALE.—Length about 3.8 mm. Head just about

as wide as thorax at tegulae, in dorsal view 0.7 as

long as wide; face slightly wider than eye height (in
62 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

ratio of 70:65), very shiny, closely punctate over most

of its surface, a little rugulose just below antennae,

where there is also a short median longitudinal keel;

clypeus weakly separated from face by a shallow impression and with a few scattered punctures; malar

space longer than clypeus and very nearly half as

long as eye height, shargreened and mat; cheeks very

weakly shagreened; temples at mideye point 0.7 as

wide as eyes, only very slightly receding, smooth and

polished except along the occipital carina where they

are shagreened; ocellocular line decidedly less than

twice as long as diameter of an ocellus; antennae of

holotype 31-segmented, those of the only female paratype in which they are complete 30-segmented, three

or four of the segments in the apical fourth of the

flagellum about as broad as long.

Mesoscutum smooth and very shiny, with only extremely shallow punctures on the middle lobe; notauli

sharply impressed, finely foveolate anteriorly, coarsely

so posteriorly; propodeum closely rugulose, the stubs

of the apical carinae rather weak, especially the median ones, the median apical area usually weakly defined; side of pronotum rugulose in the impression,

granulose anteriorly and virtually smooth along upper

margin; mesopleuron smooth and polished, the longitudinal furrow sinuate and foveolate; metapleuron

very shiny, rugulose at the posterior margin, otherwise

smooth with only very shallow scattered punctures.

Hind coxa rugulose above basally, largely smooth on

outer side, half as long as hind femur, which is about

four and one-half times as long as wide; inner calcarium of hind tibia a little more than half as long

as metatarsus; tarsal claws simple. Radial cell on wing

margin slightly shorter than stigma; second abscissa

of radius on a line with intercubitus; third abscissa

of cubitus just about as long as second abscissa; nervulus a little postfurcal; hind wing about 4.4 times as

long as wide; lower abscissa of basella subequal in

length with nervellus and much less than half as long

as mediella or maximum width of hind wing.

Abdomen at apex of third tergite nearly or quite

as broad as thorax; first tergite about 1.25 times as

long as wide at apex, closely rugulose except medially

at base and at apex, the basal dorsal keels not developed, the distance from the spiracles to the base of

the tergite about one-third the distance to the apex;

second tergite only very slightly broader at base than

long (1.1 times), finely rugulose on basal two-thirds,

polished apically and rather broadly smooth laterally,

especially in the apical corners; second suture well

defined but weak; third tergite with a transverse confluently punctate area at the middle; remainder of

dorsum of abdomen smooth and polished; ovipositor

sheath slightly longer than propodeum and abdomen

combined.

Black; clypeus anteriorly and the mandibles ferruginous; antennae brownish yellow on basal twothirds, the scape darker, black above; legs largely

testaceous, the hind coxae a little darkened basally,

also the hind femora apically on the inner side, the

hind tibiae apically and the tarsi; tegulae and wing

bases yellow; wings a little smoky, most noticeably

so apically; abdomen completely black, above and

below.

MALE.—Unknown.

HOLOTYPE.—USNM 70176.

DISTRIBUTION.—Idaho and California. Known only

from the type-series consisting of 2 females from

Craters of the Moon National Park, Idaho, 25 August

1964 (holotype) and 12 September 1964 (paratype),

D. S. Horning; 1 female from Hat Creek, Shasta

County, California, 21 June 1955, E. E. Linquist, and

1 female from Mill Creek, San Bernardino Mts., California, 20 August 1949, P. H. Timberlake.

Orgilus macrurus, new species

FIGURES 27, 49

The combination of characters given in the key will

distinguish this species from those most similar to it.

The ovipositor is unusually long, being longer than in

any other species of Orgilus known to me.

FEMALE.—Length around 3.5 mm. Head wider

than thorax, in dorsal view nearly twice as wide as

long, weakly excavated behind; face just about as

broad as eye height, shiny, and with some scattered

punctures medially; clypeus strongly convex, not separated from the face medially; anterior tentorial pits

very deep and on a line with lower eye margins; malar

space about one-fourth as long as eye height; cheeks

finely granulose and mat; temples about half as wide

as eyes, somewhat convex, receding; occipital carina

interrupted medially; ocellocular line a little longer

than distance between the lateral ocelli and nearly or

quite twice as long as the diameter of one of them;

antennae 38- or 39-segmented in the available female

specimens with complete antennae, even the shortest

flagellar segments at least as long as broad, the apical
NUMBER 3 0 63

segment with a very short, sometimes indistinct, terminal spicule.

Thorax slender, 2.5 times as long as wide; mesoscutum smooth and shiny, without a rugulose area at

the junction of the notauli, which are finely foveolate;

the middle lobe a little punctate anteriorly; disc of scutellum rather flat and with a few weak punctures; propodeum only a little declivous caudad, usually finely

rugulose over most of its surface but sometimes

granulose or even nearly smooth laterally, the stubs

of the carinae that arise from the posterior margin of

propodeum in many species of the genus not distinct;

side of pronotum granulose below the impression,

coriaceous above it; prepectal carina weak; mesopleuron smooth and polished, the longitudinal furrow

nearly straight, finely foveolate; metapleuron weakly,

indefinitely sculptured anteriorly, more or less rugulose

posteriorly and below. Hind coxa two-thirds as long

as hind femur, finely coriaceous and rather mat; hind

femur four times as long as broad; longer calcarium

of hind tibia not more than half as long as metatarsus;

tarsal claws simple. Stigma only slightly shorter than

radial cell on wing margin; second abscissa of radius

very nearly on a line with intercubitus; stub of third

abscissa of cubitus punctiform; nervulus always postfurcal, sometimes by nearly half its length; hind wing

usually about 4.6 times as long as wide; lower abscissa

of basella a little more than half as long as mediella.

Abdomen slightly longer than thorax; first tergite 1.5

times as long as broad at apex, largely finely granulose

or shagreened but smooth at base, the basal dorsal

keels distinct but weak; second and following tergites

smooth, the second not quite as long as broad at base;

second suture very weak, sometimes barely apparent;

ovipositor sheath more than twice as long as head,

thorax, and abdomen combined.

Black or blackish, palpi yellow, sometimes darkened

basally; face and antennae brownish; tegulae yellow;

wings hyaline; legs testaceous, the tarsi darkened and

sometimes also the hind femora and tibiae more or less;

abdomen brownish yellow medially, the first tergite except apically, and the fifth and following tergites,

darkened.

MALE.—Legs usually somewhat darker than in the

female; antennae of the available male specimens 43-

or 44-segmented.

HOLOTYPE.—USNM 70177.

DISTRIBUTION.—The holotype is from Plummers

Island, Maryland, collected 28 June 1961, by

356-598 O—£9 5

K. V. Krombein. Paratypes (24 in all) are from various localities in Maryland, Virginia, West Virginia,

New York, Colorado, Quebec, and Ontario.

Orgilus maculiventris (Cresson)

FIGURE 46

Eubadizon maculiventris Cresson, 1872b, p. 178.

Oresimus maculiventris (Cresson).—Ashmead, 1900, p. 123.

This name has been generally misapplied since its original publication. It has been used for what is, in fact,

lateralis (Cresson). Recent study of the holotype has

reestablished the identity of the species. It may be

readily distinguished from later alis by its elongate form

and longer antennae and by the longitudinal sculpture

of the basal three tergites.

FEMALE.—Length around 5 mm. Head a little

wider than thorax, in dorsal view about 1.8 times as

broad as long; face rather flat and very finely punctate

and shiny, its width about equal to the eye height;

clypeus not separated from the face medially; anterior

tentorial pits on a line with lower eye margins; malar

space a little less than one-third as long as eye height;

cheeks and lower temples finely granulose and mat;

temples about half as wide as eyes and rather strongly

receding; vertex smooth; occipital carina complete

though weak medially; ocellocular line twice as long

as the distance between the lateral ocelli, which is

about equal to the diameter of one of them; antennae

39-segmented in the only available female specimen

with complete antennae, all segments of the flagellum

longer than broad, the apical segment with a short

terminal spicule.

Thorax more than twice as long as wide; mesoscutum smooth; notauli finely foveolate; propodeum

only slightly declivous caudad, rugulose punctate

medially, smooth toward the sides, stubs of longitudinal carinae arising from posterior margin and setting off five apical areas that are open in front; side

of pronotum, mesopleuron, and metapleuron smooth

and polished, the longitudinal mesopleural furrow sinuate and finely foveolate; prepectal carina strong, attaining anterior margin of mesopleuron. Hind coxa

nearly smooth, 0.7 as long as hind femur, the latter a

little more than four times as long as wide and closely

punctate and shiny on the outer side; inner calcarium

of hind tibia a little more than half as long as metatarsus; tarsal claw with a well-developed subbasal tooth.

Radial cell on wing margin at least one and one-half
64 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

times as long as stigma, nearly attaining apex of wing;

stigma nearly four times as long as wide; spur of third

abscissa of cubitus little more than punctiform; nervulus interstitial or very slightly postfurcal; hind wing

about 4.5 times as long as wide; lower abscissa of

basella much longer than nervellus and a little more

than half as long as mediella or maximum width of

hind wing.

Abdomen distinctly longer than head and thorax

combined and only two-thirds as wide as the thorax;

first tergite fully twice as long as wide at apex, longitudinally rugulose, abruptly impressed at extreme base

and slightly constricted immediately behind the spiracles, which are farther from each other than from the

base of the segment and more than three times as far

from the apex as from the base; second tergite conspicuously longer than broad at base, nearly parallel-sided,

and longitudinally rugulose striate; third tergite sculptured like the second but more weakly; the remaining

tergites smooth and shiny; ovipositor a little decurved

at apex, the sheath about as long as head, thorax, and

abdomen combined.

Reddish yellow; palpi slightly darkened; antennae

brownish yellow beneath, dark brown above; stemmaticum, usually a large elongate spot on each mesonotal lobe, propodeum except along the sides, first

tergite largely, second tergite except narrowly at the

sides and a median spot on each of the following tergites, black or blackish; legs reddish yellow, extreme

apices of middle and hind femora and of middle tibiae

blackish, the hind tibia blackish, with a yellowish-white

annulus at extreme base and a yellowish-brown streak

covering the middle half of the posterior surface, and

all the tarsi more or less darkened, the posterior pair

nearly black; tegulae yellow; wings hyaline. There is

considerable variation in the extent of the dark markings; occasionally the thorax and abdomen are entirely

yellow.

MALE.—Agrees in all essentials with the female. The

antennae of the available males are 37-segmented.

HOLOTYPE.—In the Academy of Natural Sciences

of Philadelphia.

DISTRIBUTION.—The holotype is from Comal

County, Texas. Other specimens I have seen are from

Brookline, Massachusetts, Falls Church, Virginia,

(reared from Antaeotricha humilis (Zeller), Mt. Pleasant, Florida, and Opelousas, Louisiana.

Orgilus medicaginis, new species

FIGURES 9, 9a, 9b, 30, 40

This species is rather similar to detectiformis Viereck,

but it differs in its normally darker abdomen, with

even the venter blackish or piceous, in its basally hyaline wings, in its normally smoother second tergite, and

in the head and thorax of the female being usually

more or less ferruginous.

FEMALE.—Length usually 4 to 4.5 mm. Head

slightly wider than thorax, about 0.65 as long as wide

in dorsal view; face 1.3 as wide as eye height, shiny,

punctate over most of its surface but a little rugulose

just below the antennae; clypeus usually weakly punctate but occasionally strongly so; malar space longer

than clypeus and half as long as eye height; cheeks

shagreened and rather mat like the malar space; temples at mideye point at least 0.8 as wide as eyes, sometimes their width just about equal to eye width, rather

flat and very gradually receding, smooth and shiny

except narrowly along the occipital carina where they

are a little shagreened; occipital carina prominent,

broadly interrupted medially; frons shagreened laterally, very faintly rugulose or punctate near the ocelli;

upper occiput smooth or with some weak punctures;

ocellocular line about twice as long as diameter of an

ocellus; antennae usually 30- to 33-segmented, some

of the preapical segments at least as broad as long.

Mesoscutum smooth and shiny, with scattered shallow punctures; notauli foveolate, meeting at apex of

scutum in a small rugulose area; disc of scutellum

smooth; propodeum rugulose, with a small smooth

area each side of the middle at base and with prominent stubs of longitudinal carinae arising from the

posterior margin and setting off five apical areas that

are open in front; side of pronotum closely rugulose

except along upper margin; mesopleuron smooth and

shiny, the longitudinal furrow strongly foveolate; metapleuron largely rugulose, weakly so in the anterior

angle. Hind coxa not more than half as long as hind

femur, rugulose basally above, largely smooth and

shiny on outer side below; hind femur about five times

as long as broad; inner calcarium of hind tibia slightly

more than half as long as metatarsus; tarsal claws

simple. Radial cell on wing margin just about as long as

stigma; second abscissa of radius on a line with intercubitus; stub of third abscissa of cubitus at least as

long as second abscissa; nervulus distinctly postfurcal,

usually by about one-third its length; hind wing little
NUMBER 3 0 65

more than four times as long as broad; lower abscissa

of basella usually about as long as nervellus, much less

than half as long as mediella and only one-third as

long as maximum width of hind wing.

Abdomen a little narrower than thorax; first tergite

about 1.5 times as long as broad at apex, rugulose, the

dorsal keels distinct but very short, the spiracles a little

farther from each other than from base; second tergite

broadening slightly caudad, as long as broad at base

and sometimes as long as broad at apex; second and

following tergites smooth and polished, the second

sometimes a little punctate or shagreened medially at

base; the second suture distinct but very fine; ovipositor sheath about as long as propodeum and abdomen

combined.

Head usually largely ferruginous varied with black,

especially above and behind; palpi dark; antennae

usually reddish brown, darkened apically; thorax varied with ferruginous and black, the pro- and mesopectus, lateral lobes of mesoscutum, metapleura, and propodeum nearly always black; tegulae and wing bases

reddish yellow or reddish piceous; wings hyaline

basally, weakly infumated apically; anterior and middle legs brown, their coxae testaceous, their trochanters

and femora somewhat darkened above; hind legs, and

especially the coxae, varying from ferruginous to black,

the femora more or less darkened on the inner sides

even in the palest specimens; abdomen black, the venter piceous to blackish.

MALE.—Darker than the female, the head and

thorax nearly always black, except for the lower part

of the clypeus and the mandibles, which are ferruginous; tegulae and wing bases sometimes reddish yellow but usually black or blackish; legs usually darker

than in the female but extremely variable. The antennae of the specimens examined are 31- to 34-segmented. Usually the second tergite is relatively a little

shorter than in the female.

HOLOTYPE.—USNM 70178.

DISTRIBUTION.—The type-series consists of 36 females (one the holotype) and 63 males swept from

alfalfa at Elfrida, Arizona, 2 May 1956, by F. G. Werner and G. D. Butler. In addition, I have seen many

specimens from other localities in Arizona, most of

them swept from alfalfa but some collected on cotton;

also scattered specimens collected from alfalfa or cotton in California, New Mexico, and Texas.

Orgilus melissopi, new species

FIGURES 16, 28

Origlus, new species.—Dohanian, 1942, p. 838.

This might be easily confused with infrequens, new

species, but the second tergite is much shorter and

broader, the head and thorax are usually more or less

extensively black, and the maxillary palpi are pale, at

most a little darkened basally (in the available material of infrequens the head and thorax are almost entirely brownish yellow and the palpi are piceous or

blackish).

FEMALE.—Length around 4.2 mm. Head in dorsal

view about twice as broad as long; face slightly wider

than eye height, punctate and closely covered with

short hair; malar space about one-fourth as long as eye

height; cheeks finely granulose and dull; temples half

as wide as eyes, a little rounded and receding, shiny,

weakly punctate below; vertex punctate; ocellocular

line just about twice as long as diameter of an ocellus;

occipital carina complete although sometimes barely

distinct at the very middle; antennae 31- to 33-segmented in the specimens examined, even the shortest

segments of the apical fourth of the flagellum slightly

longer than broad.

Mesoscutum closely, finely punctate, even along posterior margin behind the depression at end of the middle lobe; notauli sharply impressed, complete, finely

foveolate; propodeum more or less rugulose punctate,

more weakly so laterally, the stubs of the apical longitudinal carinae prominent; side of pronotum, except

narrowly in the impression, and the mesopleuron

smooth and polished; the longitudinal furrow of mesopleuron sinuate and foveolate; metapleuron with well

separated punctures, shiny. Hind coxa shiny, with scattered punctures, about two-thirds as long as hind

femur, the latter less than four times as long as its maximum width; inner calcarium of hind tibia slightly more

than half as long as metatarsus; tarsal claw with a subbasal tooth. Radial cell on wing margin more than 1.5

times as long as stigma; second abscissa of radius not

nearly on a line with intercubitus; spur of third abscissa of cubitus very short, less than one-fourth as long

as second abscissa; nervulus a little postfurcal; hind

wing four times as long as wide; lower abscissa of

basella conspicuously longer than nervellus and about

half as long as mediella.

Abdomen fully as wide as thorax; first tergite less

than one and one-half times as long as wide at apex,
66 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

the dorsal keels well developed and distinct to the middle of the tergite, the surface of the tergite more or

less longitudinally roughened; second and third tergites faintly alutaceous; remainder of abdomen smooth

and shiny; ovipositor sheath about as long as thorax

and abdomen combined.

Head reddish yellow, the vertex and occiput largely

blackish; palpi yellow, sometimes a little darkened

basally; antennae entirely black; thorax black varied

more or less extensively with ferruginous, or ferruginous varied with black; anterior and middle legs entirely yellow; hind legs yellow, the extreme apex of

hind femur, the hind tibia except for a whitish annulus

at base and a broader brownish-yellow band at the middle, and the hind tarsus blackish or piceous; wings hyaline; tegulae and wing bases pale yellow; abdomen

usually largely blackish varied with ferruginous.

MALE.—Generally darker than the female, otherwise essentially similar.

HOLOTYPE.—USNM 70179.

DISTRIBUTION.—Oregon and California. The typeseries consists of the following: 2 females (one the holotype) and 3 males reared by S. M. Dohanian from

larvae of Melissopus in acorns at Grants Pass, Oregon,

in 1942 and 1943, the holotype, 31 July 1942; 1 female

from Ashland, Oregon, reared from an acorn of Quercus kelloggii by P.D. Sergent, 23 August 1916; 1 female reared from Melissopus in acorns, Myrtle Creek,

Oregon, 14 August 1941, by S. M. Dohanian; 1 male

"ex Melissopus prob. latiferreanus (Wlsm.)" in acorn

of Quercus dumosa, Napa County, California, 1963;

and 1 female reared from an acorn of Quercus agrifolia, Los Padres National Forest, California, 21 April

1939.

Orgilus mellipes (Say)

Microgaster mellipes Say, 1936, p. 261.

Eubadizon incognitus Ashmead, 1889, p. 644.

Orgilus mellipes Gahan, 1919 p. 123.

The type of mellipes is apparently lost. Specimens that

were identified by A. B. Gahan as mellipes, and which

served as the basis for his transfer of the specific name

to Orgilus, seem to agree in every way with Say's description and are accepted as representing the true

mellipes. Ashmead described incognitus from two females with identical data and mounted on one pin.

One of these (the specimen with complete antennae

and spread wings, which I have marked "L" on the

tag) is designated the lectotype. It appears to agree

in all significant details with the form here treated as

mellipes. Orgilus mellipes is very similar to modicus,

new species, from which it differs most importantly in

its relatively wider hind wings, relatively shorter ovipositor, dark tegulae, pale venter of the abdomen, and

longer antennae.

FEMALE.—Length around 3 mm. Head about 0.6

as long as wide in dorsal view; face just about as wide

as eye height, largely rugulose punctate; clypeus with

some shallow punctures; malar space not longer than

clypeus and only about one-third as long as eye height,

finely shagreened and subopaque; cheeks shiny, only

faintly shagreened below; occipital carina broadly

interrupted at the middle; temples a little rounded,

smooth and polished, about 0.7 as wide as eyes; ocellocular line not or barely twice as long as diameter of

an ocellus; antennae 30- to 32-segmented in the specimens examined, some of the segments in the apical

fourth of the flagellum hardly as long as wide.

Mesocutum smooth and shiny, the middle lobe with

some faint punctures; disc of scutellum impunctate,

polished, weakly convex; propodeum rugulose, the

stubs of the carinae that arise from the posterior margin usually poorly developed; side of pronotum

strongly rugose in the impression, nearly smooth along

the upper margin; mesopleuron smooth and polished,

the longitudinal furrow coarsely foveate; metapleuron

rugose posteriorly ;»nd below, shallowly and confluently

punctate in the upper basal angle. Hind coxa more

than half as long as hind femur, rugulose on upper

edge toward base and on the upper part of the outer

side; hind femur about four times as long as wide;

inner calcarium of hind tibia a little more than half as

long as metatarsus; tarsal claws simple. Radial cell on

wing margin just about as long as stigma; second

abscissa of radius on a line with intercubitus; stub of

third abscissa of cubitus about as long as the second

abscissa; nervulus very slightly postfurcal, sometimes

virtually interstitial; hind wing about 4.5 times as long

as wide; lower abscissa of basella usually a little longer

than nervellus but less than half as long as mediella.

Abdomen usually only a little narrower than thorax;

first tergite about 0.8 as wide at apex as long, the

spiracles nearly twice as far from each other as from

base, the surface of the tergite finely longitudinally

rugulose; second tergite usually about 1.4 times as

wide at base as long, finely rugulose over most of the

basal half to two-thirds; the second suture very fine;
NUMBER 3 0 67

third and following tergites smooth and polished; ovipositor sheath about as long as abdomen, at most only

very slightly longer.

Black, clypeus ferruginous below; mandibles yellow;

palpi darkened; antennae yellow on basal half,

darkened apically, the scape above somewhat

darkened; legs yellow, hind tibiae very slightly darkened at bases and at apices, all tarsi a little darkened;

tegulae blackish, the wing bases pale; wings hyaline

or subhyaline; abdomen black or blackish, the tergites after the first often more or less suffused with

red or brown; venter of abdomen, at least basally,

yellow.

MALE.—Essentially like the female, but the abdomen is relatively a little more slender and the hind

coxae are darkened.

TYPES.—The holotype of mellipes is apparently

lost; the lectotype of incognitus is in the U.S. National

Museum (USNM2967).

DISTRIBUTION.—The type-locality of mellipes was

given as "Indiana"; that of incognitus is Kirkwood,

Missouri. Material identified as mellipes in the U.S.

National Museum is from Virginia, Illinois, Michigan, Alabama, and Louisiana. Most of the specimens

are recorded as having been reared from Keiferia

glochinella (Zeller) but two are labeled as from

Phthorimaea operculella (Zeller).

Orgilus mimicus, new species

This species appears to be most similar to pratensis,

new species, but the second tergite is relatively a little

broader and more extensively sculptured, the face and

clypeus are more strongly punctate, the temples are

flatter and the ovipositor sheath is somewhat shorter.

FEMALE.—Length about 3.8 mm. Head barely

wider than thorax, in dorsal view about 0.6 as long as

wide; face 1.15 times as wide as eye height, closely

punctate; clypeus weakly punctate, not separated from

the face medially; malar space just about half as long

as eye height, shagreened and dull; cheeks largely

smooth, shagreened only near lower margins; temples

smooth and polished, 0.8 as wide as eyes, rather flat

and receding only slightly; occipital carina broadly

interrupted medially, very strong at the sides; ocellocular line about twice as long as diameter of an ocellus; antennae 30-segmented in the holotype, none of

the segments broader than long.

Mesoscutum smooth and shiny, not distinctly punctate even on the middle lobe; notauli very fine, sharply

impressed and minutely foveolate, the angle at their

junction not rugose but with only a few large punctures; disc of scutellum convex, smooth and polished;

propodeum rugulose, the stubs of longitudinal carinae

that arise from the posterior margin rather prominent

though short; side of pronotum rugulose over most of

its surface but broadly smooth and shiny at upper margin ; mesopleuron smooth and polished, the longitudinal

furrow very weak and incompletely minutely foveolate,

no punctures below the furrow; metapleuron rugulose

at lower posterior margin, otherwise largely shiny and

smooth except for some weak and very shallow punctures. Hind coxa rugulose above toward base, rather

smooth on outer side below; hind femur twice as long

as hind coxa and a little less than five times as long

as broad; inner calcarium of hind tibia slightly more

than half as long as metatarsus; tarsal claws simple.

Radial cell on wing margin as long as stigma; second

abscissa of radius on a line with intercubitus; stub of

third abscissa of cubitus a little longer than second

abscissa; nervulus postfurcal by about one-third its

length; hind wing about 4.3 times as long as wide;

lower abscissa of basella not longer than nervellus and

less than one-third as long as mediella, also barely onethird as long as maximum width of hind wing.

Abdomen narrower than thorax, first tergite 1.35

times as long as broad at apex, largely finely rugulose

but smooth and polished medially at base and polished

also at apex, the basal dorsal keels not developed; second tergite in holotype a little shorter than broad at

base, only slightly wider at apex than at base, smooth

and polished except for a finely rugulose punctate area

each side of the middle on basal half; the following

tergites smooth and polished; ovipositor sheath as long

as propodeum and abdomen combined.

Black; clypeus entirely black; mandibles reddish yellow; antenna with the flagellum brownish yellow toward base, the rest brownish black; legs testaceous,

forefemur with a blackish streak above which widens

basally, middle femur entirely yellow, hind femur blackish apically, more extensively so on inner side, hind

tibia a little darkened basally and apically; all tarsi

somewhat darkened; tegulae and wing bases yellow;

wings nearly hyaline basally, a little infumated apically;

venter of abdomen entirely blackish.

MALE.—Unknown.

HOLOTYPE.—USNM 70180.

DISTRIBUTION.—Known only from the holotype female that was taken on Mt. Pines, Ventura County,

California, 7500 feet, 8 May 1959, by G. I. Stage.
68

Orgilus modicus, new species

FIGURE 47

This species is very similar to mellipes (Say) but is distinguished by shorter antennae, relatively narrower

hind wings, a relatively longer ovipositor, usually yellow tegulae, and usually darker abdominal sternites.

FEMALE.—Length about 2.8 mm. Head distinctly

a little wider than thorax, in dorsal view 0.6 as long

as wide, weakly excavated behind; face in narrowest

part barely broader than eye height, very shiny and

largely smooth, with only scattered punctures and some

weak rugulosity just below antennae; malar space not

longer than clypeus, about 0.4 as long as eye height and

not longer than longest segment of maxillary palpus;

cheeks smooth and shiny except at lower margins; temples smooth and polished, gradually receding, 0.7 as

wide as eyes; occipital carina broadly interrupted at

the middle; ocellocular line twice as long as diameter

of an ocellus; antennae 26- to 28-segmented in the

available specimens, none of the flagellar segments as

wide as long.

Thorax rather stout; mesoscutum smooth and shiny

with only setigerous punctures; notauli sharply impressed and finely foveolate and meeting just before

apex of scutum; disc of scutellum polished; propodeum

evenly and rather strongly convex from base to apex,

finely rugulose, except narrowly each side of the middle

at extreme base, where it is smooth and polished, and

in the poorly defined apical areas, which are more or

less smooth; side of pronotum smooth along upper margin, elsewhere rugulose; mesopleuron polished, the

longitudinal furrow virtually complete, sinuate and

foveolate; metapleuron shiny, nearly smooth toward

base, rugulose below and posteriorly. Hind coxa shiny,

weakly rugulose above at base and on outer side,

smooth outwardly below; hind femur less than twice

as long as hind coxa and just about four times as long

as broad; inner calcarium of hind tibia about half

as long as metatarsus; tarsal claws simple. Radial cell

on wing margin hardly as long as stigma; second abscissa of radius on a line with intercubitus; stub of

third abscissa of cubitus fully as long as second abscissa; nervulus barely postfurcal; hind wing barely

five times as long as wide; lower abscissa of basella

about half as long as mediella and about half as long

as maximum width of hind wing.

Abdomen slightly longer than thorax; first tergite

about 1.2 times as long as wide at apex, finely rugulose

punctate, smooth medially toward base, the basal dorSMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

sal keels not distinct; second tergite about 1.3 times as

wide at base as long, confluently punctate medially on

basal half, smooth laterally and apically; second suture

fine but sharply impressed; third and following tergites

smooth and polished; ovipositor sheath about as long

as distance from base of scutellum to apex of abdomen.

Black; lower part of clypeus, mandibles, antennal

scape, pedicel, and basal part of flagellum usually

reddish yellow; tegulae usually yellow but sometimes

darkened, the wing bases always pale; wings hyaline

or virtually so; radiella and cubitella not pigmented;

legs reddish yellow, the hind coxae sometimes more

or less darkened, the tarsi infuscated; third and following tergites usually tinged with dark brown.

MALE.—Like the female except that the hind coxae

are usually more extensively darkened; the antennae

of the available specimens are 27- to 29-segmented.

HOLOTYPE.—USNM 70181.

DISTRIBUTION.—The type-series consists of the following: 3 females (one the holotype) and 4 males

collected in Polk County, Florida, on Kuhnistera

pinata in November 1929, by J. L. Bottimer; 4 females

and 4 males reared from Stegasta bosquella (Chambers) in Caddo County, Oklahoma, 1957 and 1959;

1 female from the same host, Spaulding County,

Georgia, 14 October 1942; 1 female from the same

host, Malone, Florida, September 1944, and 2 females

collected from cotton, Waco, Texas, 19 August 1949

and 3 October 1939, by P. A. Glick.

Orgilus momphae, new species

FIGURES 29, 43

This species is very similar to gelechiae (Ashmead)

and coleophorae, new species, but it differs significantly from both in the form of the tarsal claw, which

has a prominent subbasal tooth.

FEMALE.—Length around 3.5 mm. Head not or

barely wider than thorax and in dorsal view about

0.6 as long as wide; face clearly wider than eye height,

and, together with the clypeus, closely punctate on a

shagreened and rather mat surface; anterior tentorial

pits on a line with lower eye margins; malar space less

than one-third as long as eye height; cheeks and temples shagreened and more or less mat; temples at

mideye point about half as wide as eyes; frons and

vertex finely granulose and dull; the carinate occipital

margin sharp at the sides, broadly interrupted medially above; ocellocular line three times as long as
NUMBER 30

diameter of an ocellus; antennae usually 33- to 36-

segmented (36-segmented in the holotype), even the

shortest segments in apical third of the flagellum

clearly longer than broad.

Mesoscutum finely granulose or shagreened; notauli

sharply impressed and meeting just before apex of

scutum; disc of scutellum flattened and weakly

shagreened; propodeum finely rugulose except at base

where it is granulose or shagreened; side of pronotum,

and the mesopleuron and metapleuron shagreened;

longitudinal furrow of mesopleuron very weak but

usually distinct and with some poorly defined foveolae.

Hind coxae shagreened, elongate, three-fourths as long

as hind femora, the latter just about four times as

long as wide; inner calcarium of hind tibia less than

half as long as the metatarsus; tarsal claw with a

prominent subbasal tooth. Radial cell on wing margin

slightly longer than stigma, the latter emitting radius

well beyond the middle; second abscissa of radius

nearly on a line with intercubitus; cubitus ending at

intercubitus, not even a punctiform spur of a third

abscissa present; nervulus usually interstitial; hind

wing usually about six times as long as wide; lower

abscissa of basella twice as long as upper abscissa, at

least half as long as mediella and more than half as

long as maximum width of hind wing.

Abdomen about as broad as thorax, all tergites contiguously, in part confluently, punctate; the first nearly

as broad at apex as long, its dorsal keels well developed

and extending about to the middle of the tergite; seccond and following tergites strongly transverse; the

second suture sharply impressed; ovipositor sheath a

little shorter than the abdomen.

Yellow or brownish yellow; head largely or entirely

black; antennae darkened, becoming blackish apically;

thorax often varied with black, especially on the mesonotal lobes, propodeum and pleura, rarely almost

entirely blackish except the pronotum, which is always

pale; abdomen ranging from entirely yellowish to

brownish yellow with a large blackish or piceous area

on each tergite; legs pale, apices of hind femora and

tibiae and all the tarsi darkened.

MALE.—Essentially like the female although the

abdominal sculpture may be somewhat weaker, especially on the apical tergites.

HOLOTYPE.—USNM 70182.

DISTRIBUTION.—The type-series comprises the following: 3 females (one the holotype) and 1 male

from Ottawa County, Ohio, 1 female from Montgomery County, Ohio, and 1 female from Summit

County, Ohio, all reared in June or July 1937, by

R. B. Neiswander from Mompha eloisella Clemens, the

holotype on 11 July; and the following additional

material from the same host: 2 females and 3 males,

St. David's, Ontario, 1933, G. G. Dustan; 1 female,

New Brunswick, New Jersey, 1931, and 4 females and

2 males, Moorestown, New Jersey, 1933. Other paratypes include 2 females from primrose, Wayne County,

Ohio, 16 May 1938; 2 females and 3 males, Progress,

Pennsylvania, April and May 1909; 1 female and

1 male, Ithaca, New York; 1 female from primrose,

Summit County, Ohio, July 1936; 1 female, Cold

Spring Harbor, Long Island, New York, and 1 female

from chicory, Pittsylvania County, Virginia, 1930.

Orgilus monticola, new species

This is closely similar to mundus, new species, but it

may be distinguished by the differences noted in the

description of mundus.

FEMALE.—Length about 4 mm. Head slightly wider

than thorax, in front view not, or barely, wider than

high, in dorsal view about 1.5 times as broad as long

and rather strongly excavated behind; face slightly

(1.1 times) broader than eye height, shiny, indefinitely

sculptured laterally, smooth down the middle; malar

space longer than clypeus and half as long as eye

height; cheeks strongly convex, smooth and polished

except near lower and posterior margins where they

are finely shagreened; temples not distinctly receding,

in side view bulging a little opposite middle of eyes

and at this point very nearly as wide as eyes; carinate

margin of occiput rather narrowly interrupted

medially; ocellocular line more than twice as long as

diameter of an ocellus; antennae of holotype 31-segmented, even the shortest flagellar segments distinctly

a little longer than broad.

Thorax slender; mesoscutum smooth and shiny,

weakly punctate on the middle lobe; notauli sharply

impressed and strongly foveolate, a narrow triangular

rugulose punctate area at their junction; propodeum

irregularly rugulose, with a polished area each side of

the middle at base, the anteriorly open median apical

area poorly defined, the stubs of the longitudinal

carinae that arise from the posterior margin being

weak, an area each side of the median apical area

smooth and shiny, apical margin of propodeum strongly

reflexed; side of pronotum rugulose, more or less granu-
70

lose anteriorly; mesopleuron smooth, the longitudinal

furrow foveolate; metapleuron smooth on basal half

or more, rugulose apically. Hind coxa finely granularly

rugulose above at base, very shiny and nearly smooth

on outer side with only very shallow punctures; hind

femur twice as long as hind coxa and about five times

as long as broad; longer calcarium of hind tibia a little

more than half as long as metatarsus; tarsal claws

simple. Radial cell on wing margin about as long as

stigma; second abscissa of radius on a line with intercubitus; stub of third abscissa of cubitus as long as

second abscissa; nervulus postfurcal by one-third its

length; hind wing only slightly more than four times

as long as wide; lower abscissa of basella a little longer

than nervellus but less than half as long as mediella and

much less than half as long as maximum width of

hind wing.

Abdomen as long as head and thorax combined; first

tergite about 1.3 times as long as wide at apex, largely

longitudinally striate, smooth medially toward base

and with 2 very weak, convergent dorsal keels on basal

half; second tergite virtually parallel-sided, as long

as broad at base, largely faintly aciculate, rather transversely so toward base and longitudinally so posteriorly;

third and following tergites smooth and polished; ovipositor sheath longer than head, thorax and abdomen

combined.

Black; palpi blackish; scape entirely black, flagellum

more or less yellowish brown toward base, black apically; legs brownish yellow; hind coxae black except at

apices; fore- and middle femora somewhat darkened

basal ly above, the anterior pair more extensively so

than the middle pair; hind femora blackish on inner

surface; tarsi a little dusky; tegulae and wing bases

black; wings very weakly clouded.

MALES .—Unknown.

HOLOTYPE.—USNM 70183.

DISTRIBUTION.—Known only from the holotype female, which was collected at Bear Valley, Idaho, 6400

feet, 11 July 1926, by R. W. Haegele.

Orgilus morulus, new species

Although superficially rather similar to coracinus, new

species, this form may be distinguished readily by its

much narrower hind wings, stouter hind femora,

shorter malar space, coarsely sculptured face and longer

ovipositor.

FEMALE.—Length 4.5 mm. Slender; head slightly

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

wider than thorax, in dorsal view 0.6 as long as wide;

face 1.1 times as wide as eye height, closely rugulose

punctate except along the eyes where it is finely shagreened, rather mat; clypeus closely and strongly

punctate; malar space barely longer than clypeus and

a little less than half as long as eye height, finely

granulose; cheeks smooth and shiny on upper parts,

finely shagreened toward lower margins; temples

smooth and shiny, about 0.8 as wide as eyes, flat but

receding a little; ocellocular line a little more than

twice as long as diameter of an ocellus; occipital carina

broadly interrupted medially; vertex smooth and shiny;

antennae 34-segmented in the holotype, none of the

segments broader than long.

Mesoscutum smooth and shiny, the middle lobe

with a few weak, extremely shallow punctures, notauli

sharply impressed and finely foveolate; propodeum

closely rugulose on the dorsal face, smoother on the

short posterior face which has the apical areas set off

by prominent stubs of longitudinal carinae that arise

from the posterior margin; side of pronotum rugulose

in the impression, broadly nearly smooth below the

upper margin; mesopleuron smooth and polished,

even in the upper anterior angle, the longitudinal furrow strongly foveolate; metapleuron rugulose punctate

except for a basal triangular area which is smooth and

shiny. Hind coxa rugulose, strongly so above, weakly so on outer side, much more than half as long as

hind femur, the latter barely four times as long as

broad; inner calcarium of hind tibia more than half

as long as metatarsus; tarsal claws simple. Radial cell

on wing margin hardly as long as stigma; second abscissa of radius on a line with intercubitus; stub of

third abscissa of cubitus fully as long as second abscissa;

nervulus postfurcal by one-third its length; hind wing

more than five times as long as wide, the anterior and

posterior margins nearly parallel; lower abscissa of basella a little longer than nervellus but less than half as

long as mediella and not quite half as long as maximum width of hind wing.

Abdomen a little narrower than thorax; first tergite

widening only very gradually caudad, 1.5 times as

long as wide at apex, the spiracles hardly twice as far

from apex as from base, the dorsal keels not developed,

the surface of the tergite longitudinally rugulose except

in the basal impression and medially at apex, where

it is smooth and polished; second tergite as long as

broad at base, broadening noticeably caudad, and

very finely, confluently punctate over much of its
NUMBER 30 71

surface although smooth and polished medially at

base and broadly across apex; second suture fine but

rather sharply impressed; the following tergites smooth

and polished except the third which, in the holotype

at least, has a few weak punctures each side toward

the base; ovipositor sheath about as long as the distance from the tegulae to the end of the abdomen.

Black; clypeus and antennae black; mandibles reddish; all coxae and trochanters black, otherwise the

legs largely brown, the tarsi piceous; tegulae and wing

bases black, the wings distinctly a little infumated;

venter of abdomen entirely black.

MALE.—Unknown.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Known only from the holotype female from Knoulton, Quebec, collected 4 August 1951,

by A. P. Arthur.

Orgilus mundus, new species

This species is extremely similar to monticola, new species, and may easily be confused with it. It, however,

seems to be distinct. The temples are narrower and

recede more distinctly; the cheeks are strongly shagreened and dull, whereas they are largely smooth and

polished in monticola; the clypeus is reddish anteriorly;

the hind coxae are largely brownish yellow, and the

abdomen, which is completely black in monticola, has

some rufous markings in mundus.

FEMALE.—Length 4 mm. Head slightly wider than

thorax, in front view rather round and not distinctly

wider than high, in dorsal view less than one and onehalf times as broad as long and rather strongly excavated medially behind; face 1.15 times as wide as eye

height, strongly convex, shiny and finely punctate over

most of its surface, the punctures well separated; malar

space longer than clypeus and slightly more than half

as long as eye height (in ratio of 35:60); cheeks

strongly convex, bulging somewhat, and strongly shagreened and dull; temples 0.75 as wide as eyes, slightly receding; carinate margin of occiput narrowly interrupted medially; ocellocular line more than twice

as long as diameter of an ocellus; antennae incomplete

in the holotype and only known specimen, 24 segments

remaining, the last four of these about as broad as long.

Thorax rather slender; mesoscutum smooth and

shiny, with only a few scattered and extremely shallow

punctures on the middle lobe; notauli rather shallow

and narrow, completely finely foveolate; disc of scutellum rather large, convex and with a few very shallow

punctures; propodeum closely rugulose, with a transverse polished area each side of the middle at base, the

incomplete median apical area a little sculptured and

not clearly defined laterally by stubs of carinae arising

from posterior margin of propodeum; side of pronotum largely rugulose punctate, granulose anteriorly;

mesopleuron smooth and polished, the longitudinal furrow completely foveolate, metapleuron smooth and

shiny on upper anterior part, rugulose posteriorly

below. Hind coxa finely rugulose at base above, largely

smooth on outer side, hind femur about five times

as long as broad and twice as long as hind coxa; longer

calcarium of hind tibia more than half as long as metatarsus, tarsal claws simple. Stigma very narrow and

just about as long as radial cell on wing margin; second abscissa of radius on a line with intercubitus, the

first abscissa much longer than width of stigma; stub

of third abscissa of cubitus at least as long as second

abscissa; nervulus postfurcal by about one-third its

length; hind wing about 4.5 times as long as wide;

lower abscissa of basella longer than nervellus but less

than half as long as mediella.

Abdomen fully as long as head and thorax combined;

first tergite about 1.5 times as long as wide at apex,

finely longitudinally rugulose, the dorsal longitudinal

keels not developed, the spiracles three times as far

from apex as from base; second tergite as long as

broad at base, finely longitudinally sculptured on basal

two thirds except laterally where it is smooth; third and

following tergites smooth and polished; ovipositor

sheath as long as head, thorax, and abdomen combined.

Black; lower half of clypeus reddish testaceous;

mandibles testaceous; palpi piceous; scape black, pedicel and basal segments of flagellum yellowish, remainder of flagellum blackish; legs brownish yellow,

hind coxae blackish at bases, all femora more or less

darkened along upper edges, hind tibiae dusky toward

apices and apical tarsal segments darkened; tegulae

and wing bases black; wings weakly infumated; abdomen with a small reddish blotch in each apical corner

of first and second tergites, the following tergites with

some rufous shadings.

MALE.—Unkown.

HOLOTYPE.—USNM 70184.

DISTRIBUTION.—Known only from the holotype

female, which was taken at Creede, Colorado, at 8000

feet, 9 June, by F. M. Carpenter.
72 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Orgilus nitidus, new species

FIGURE 19

A very shiny species. It is most similar to pratensis,

new species, from which it differs in its clear hyaline

wings, more strongly sculptured face, longer antennae,

largely black clypeus, and darker legs.

FEMALE.—Length about 3.5 mm. Head very

slightly wider than thorax, in dorsal view about 0.6 as

long as wide; face 1.2 times as wide as eye height,

rugulose punctate at least on upper half, and with a

low, more or less distinct, median longitudinal keel;

clypeus smooth and shiny, with only a few weak punctures; malar space very slightly longer than clypeus

and longest segment of maxillary palpus and very

nearly half as long as eye height, shagreened; cheeks

broad, weakly shagreened, and very shiny; temples

largely smooth and polished, about 0.8 as wide as eyes,

only very slightly receding; occipital carina narrowly

interrupted at the middle; vertex smooth and shiny,

with only a few weak punctures; ocellocular line hardly

twice as long as diameter of an ocellus; antennae 31-

or 32-segmented in the available specimens, none of

the flagellar segments as broad as long.

Mesoscutum smooth and shiny, with only a few

minute, shallow punctures on the middle lobe; notauli

sharply impressed and finely fovelate; propodeum

largely finely rugulose but with a transverse smooth

and polished area each side of the middle at base and

broadly smooth and shiny medially at apex, the stubs

of the apical longitudinal carinae not developed or

very short and weak; side of pronotum rugulose punctate in the impression, finely granulose in front of this

and nearly smooth along upper margin; mesopleuron

smooth and polished, even in the upper anterior angle,

the longitudinal furrow shallow and very finely foveolate, weakly so at each end; metapleuron rugulose at

lower posterior margin, otherwise smooth and very

shiny with only scattered minute punctures. Hind

coxa very shiny, finely rugulose above, nearly smooth

on outer side; hind femur about five times as long

as wide and just about twice as long as hind coxa;

inner calcarium of hind tibia half as long as metatarsus;

tarsal claws simple. Radial cell on wing margin about

as long as stigma; second abscissa of radius on a line

with intercubitus; stub of third abscissa of cubitus as

long as second abscissa; nervulus postfurcal by about

one-third its length; hind wing about 4.7 times as long

as wide; lower abscissa of basella a little longer than

nervellus but less than half as long as mediella.

Abdomen very shiny; first tergite about one and onehalf times as long as wide at apex, varying in the

available specimens from largely finely rugulose to

largely smooth and polished; second tergite as long

as broad at base, smooth and polished laterally and

apically and more or less finely rugulose punctate

basally in the middle in some specimens, entirely

smooth and polished in others; third and following

tergites polished; ovipositor sheath nearly as long as

thorax and abdomen combined.

Deep shining black; mandibles testaceous; clypeus

black except very narrowly at lower margin; palpi

black; antennae dark, more or less brownish below;

hind coxae reddish brown, rather broadly black basally above and on inner side; basal trochanters, especially those of forelegs, darkened; fore- and middle

femora blackish along dorsal edges; hind femur black

on inner side and broadly black on outer side toward

apex; fore- and middle tibiae weakly infuscated; hind

tibiae largely blackish; all tarsi darkened; wings hyaline; tegulae and wing bases brownish yellow.

MALE.—Unknown.

HOLOTYPE.—USNM 70185.

DISTRIBUTION.—Known only from the type-series

consisting of the following: 3 females (one the holotype) labeled as having been collected at light by J. H.

Davidson, J. M. Davidson, and M. A. Cazier 1 mile

south of Portal, Cochise County, Arizona, at 4800 feet,

19 June 1965; and 5 females collected in the Graham

Mts., Arizona, at 7500 feet, in 1955 and 1957, by G.

Butler and F. Werner.

Orgilus notabilis, new species

In some respects this species is very similar to tenuis,

new species, but it is readily distinguished by the partly

margined occiput, the extraordinarily long and narrow

radial cell, the much longer calcaria of the hind tibiae,

the annulate antennae in the female, and the general

body color.

FEMALE.—Length about 3.2 mm. Head conspicuously wider than thorax, more than twice as wide as

long in dorsal view; face a little narrower than eye

height, finely granulose and rather mat; temples very

narrow, receding sharply from the eye margins; occiput

margined only laterally below level of the middle of

the eyes; clypeus smooth and shiny; eyes very large;

malar space about one-sixth as long as eye height and

less than half as long as longest segment of maxillary

palpus; maxillary palpi at least as long as width of
NUMBER 30 73

face; frons and vertex finely granulose; diameter of a

lateral ocellus slightly less than distance between lateral

ocelli and about half as long as ocellocular line; antennae of holotype 35-segmented, even the shortest

flagellar segments longer than broad.

Thorax very slender; mesoscutum finely granulose;

notauli sharply impressed and finely foveolate; disc of

scutellum shagreened; propodeum coriaceous and with

very short spurs of longitudinal carinae arising from the

posterior margin and setting off five apical areas that

are open in front; side of pronotum, mesopleuron, and

metapleuron coriaceous, the longitudinal furrow of

mesopleuron weakly indicated. Hind coxa elongate,

about half as long as thorax, its surface coriaceous;

hind femur about five times as long as wide; inner

calcarium of hind tibia fully half as long as metatarsus;

tarsal claws simple. Radial cell going nearly to extreme

apex of wing and on wing margin at least one and onehalf times as long as stigma; radius arising from well

beyond middle of stigma; second abscissa of radius

more than eight times as long as first; not even a vestige of third abscissa of cubitus present; nervulus postfurcal by nearly half its length; hind wing about six

times as long as wide; lower abscissa of basella twice

as long as nervellus, three-fourths as long as mediella

and at least four-fifths as long as maximum width of

hind wing.

Abdomen very slender; first tergite twice as long as

wide on posterior margin, finely rugulose and with the

basal dorsal keels strong and extending to the middle

of the tergite; second tergite longer than broad at base

and about as long as broad at apex, finely rugulose

punctate; third tergite wider than long, entirely confluently punctate; fourth and fifth tergites largely

smooth and shiny but a little shagreened medially;

ovipositor sheath a little longer than head, thorax, and

abdomen combined.

Brownish yellow; antennal flagellum dark brown

but with segments 9-16 white; second and third tergites slightly darkened medially; legs entirely, also

tegulae and wing bases, brownish yellow; wings

hyaline.

MALE .—Unknown.

HOLOTYPE.—USNM 70186.

DISTRIBUTION.—Known only from the holotype female which was collected in a black-light trap at Miami, Florida. This is the only Nearctic specimen with

annulated antennae I have seen, although the U.S.

National Museum collection contains specimens of

several apparently undescribed Neotropical species of

Orgilus with conspicuously banded antennae. It is quite

possible that the type of notabilis is a wanderer from

the West Indies.

Orgilus obscurator (Nees)

FIGURES 31, 38, 57

Microdus obscurator Nees, 1814, p. 186, pi. 4: fig. 1.

Orgilus obscurator (Nees).—Haliday, 1833, p. 262.—Marshall, 1885, p. 278, pi. 6: fig. 6.—Thorpe, 1930, p. 401.

Ischius obscurator (Nees).—Wesmael, 1837, p. 21, fig. 10.—

Ratzeburg, 1848, p. 46.

Eubadizon leptocephalus Hartig, 1838, p. 268.

Macropalpus leptocephalus (Hartig).—Ratzeburg, 1844, p.

57, pi. 7: fig. 9.

Macropalpus laticephalus Kolenati, 1859, p. 47.

This species is most like buccatus, new species, and

longiceps Muesebeck. From both it is readily distinguished, however, by its nonflaring temples. It differs further from buccatus in having well developed

though short longitudinal carinae arising from the

posterior margin of the propodeum, and from longiceps

in its darker legs. Orgilus dioryctriae Ganan, which

obscurator resembles superficially, has flaring temples

and a wider face, and its propodeum lacks the apical

carinae.

FEMALE.—Length around 4.5 mm. Head a little

narrower than thorax, in dorsal view about 1.5 times

as wide as long, rather strongly evenly excavated behind; face at narrowest point slightly narrower than

eye height and coarsely punctate to rugose punctate;

clypeus as long as malar space, more weakly punctate

than face; malar space less than 0.4 as long as eye

height; anterior tentorial pits clearly below level of

lower eye margins; cheeks and temples smooth and

shiny with only very minute setigerous punctures;

temples neither flaring nor receding but evenly rounded

and very slightly narrower than eyes; ocellocular line

hardly one and one-half times as long as diameter of

an ocellus and shorter than the distance between

lateral ocelli; antennae about as long as the body,

30- to 34-segmented in the specimens examined, even

the segments of the apical fourth of flagellum slightly

longer than broad; maxillary palpi short, hardly as

long as height of head.

Thorax stout; mesoscutum with numerous minute

and very shallow punctures on middle lobe; notauli

sharp and completely, finely foveolate; propodeum

strongly rugose, narrowly smooth and polished each
74 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

side of the middle at base, and with short longitudinal

carinae arising from the posterior margin and setting

off five apical areas that are open in front; lateral face

of pronotum granular and dull anteriorly, rugulose

below posteriorly and in the impression, punctate and

shiny along the upper margin; mesopleuron smooth

and polished, the longitudinal furrow coarsely

foveolate; metapleuron rugose at lower posterior margin, smooth and shiny elsewhere although sometimes

with scattered shallow punctures over most of its

surface. Hind coxa strongly rugulose on upper edge,

more weakly rugulose to granulose on outer side; hind

femur hardly four times as long as wide; inner calcarium of hind tibia slightly more than half as long as

metatarsus; tarsal claws simple. Radial cell on wing

margin hardly as long as stigma; second abscissa of

radius on a line with intercubitus; stub of third abscissa

of cubitus a little longer than second abscissa, which

is about half as long as intercubitus; nervulus usually

interstitial or nearly so; hind wing less than 4.5 times

as long as wide; lower abscissa of basella longer than

nervellus but less than half as long as mediella.

Abdomen nearly as broad as thorax; first tergite

about 1.2 times as long as wide at apex, smooth at

extreme base, usually closely finely rugulose behind the

spiracles but occasionally with the smooth area extending caudad beyond the spiracles; second tergite much

broader than long, finely rugulose or rugulose punctate,

more weakly so apically, the apical third sometimes

largely smooth; second suture fine but rather sharply

impressed; third tergite sometimes with a little weak

rugulosity or punctation on basal half but often

entirely smooth and polished; ovipositor sheath about

as long as the distance from base of scutellum to end of

abdomen.

Black; antennae, palpi, tegulae, and wing bases

black; apices of anterior and middle femora, their

tibiae, the posterior tibiae except at apices, and bases

of the posterior metatarsi, reddish; wings uniformly a

little infumated.

MALE.—Like the female in essential characters.

DISTRIBUTION.—The foregoing redescription is

based principally on numerous specimens in the U.S.

National Museum that were reared from the pineshoot moth, Rhyacionia buoliana (Schiff.), in Austria,

and on long series of both sexes received from the Forest

Insect Laboratory, Canada Department of Agriculture,

at Sault Sainte Marie, Ontario, all of which had been

reared from R. buoliana taken at Paris, Dunnville,

London, and Port Dover, Ontario. The U.S. National

Museum also has specimens from Switzerland, Spain,

France, Germany, and England, and United States

specimens from Michigan, Ohio, Connecticut, and

West Virginia. In addition I have seen material in the

Canadian National Collections from Suffolk and

Hampshire, England, and from Ottawa, Niagara

Falls, and Cedar Bay, Ontario. The species is widely

distributed in Europe. In 1928 it was introduced into

Canada (McGugan and Coppel, 1962, p. 70) to aid

in the control of R. buoliana, which had become a serious pest in parts of Ontario; and it has become well

established there. Soon afterward (Dowden, 1934,

p. 599) it was imported from Europe by the U.S. Department of Agricuture for liberation in infestations of

the pine-shoot moth in New England, and it is now

well established in the United States.

Thorpe (1930) lists ten species of Tineidae and Tortricidae, in addition to R. buoliana, as recorded hosts

of O. obscurator in Europe; and the card index to published host-parasite associations, which is maintained

by the Insect Identification and Parasite Introduction

Branch of the United States Department of Agriculture, includes records of six additional host species

not listed by Thorpe. I seriously doubt, however, that

all, or even most, of these records are correct, for

species of Orgilus are not easily identified accurately.

I have seen no specimens of the parasite from any host

other than R. buoliana.

Orgilus opacus, new species

This appears to be most similar to cuneatus (Provancher) but it differs in its minutely granulose or

shagreened and mat head and mesonotum, more

slender antennae, larger size and relatively somewhat

shorter ovipositor.

FEMALE.—Length about 3.5 mm. Head a little

wider than thorax, in dorsal view 0.6 as long as wide;

face slightly wider (about 1.1 times) than eye height;

face, clypeus, malar space, cheeks, temples, frons, vertex, and back of head above the line of the occipital

carina all finely granulose or shagreened and rather

mat; malar space longer than clypeus and very nearly

half as long as eye height; temples at mideye point

about 0.75 as wide as eyes; occiput carinately margined

only at the sides; ocellocular line twice as long as diameter of an ocellus; antennae of holotype 31-seg-
NUMBER 3 0 75

mented, even the segments of the apical fourth longer

than broad.

Mesoscutum and disc of scutellum finely granulose

or shagreened and rather dull; the notauli deeply

impressed and finely foveolate; propodeum granulose

and dull, with some irregular rugulae but with a small

smooth and shining area each side at extreme base and

with well developed stubs of longitudinal carinae arising from posterior margin and setting off five apical

areas; side of pronotum finely rugulose in the impression, finely granulose above and below it; mesopleuron

shagreened, more strongly so below the foveolate longitudinal furrow than above; metapleuron finely granulose and dull, a little rugulose at lower posterior margin.

Hind coxa finely granulose and dull, about 0.6 as

long as hind femur, which is about 4.4 times as long

as broad and is granulose and subopaque; inner calcarium of hind tibia slightly more than half as long

as metatarsus; tarsal claws simple. Wings not or barely

extending beyond end of abdomen; radial cell on wing

margin as long as stigma; second abscissa of radius on

a line with intercubitus; stub of third abscissa of cubitus

about as long as second abscissa; nervulus barely postfurcal; hind wing five times as long as wide; lower

abscissa of basella much longer than nervellus and

about half as long as mediella or maximum width of

hind wing.

First abdominal tergite at least 1.5 times as long as

wide at apex, finely rugulose on a granulose surface and

dull, the dorsal keels very weak and extending barely

beyond the spiracles; second tergite about as long as

broad, entirely finely confluently punctate; second

suture sharply impressed; third tergite smooth and

polished apically but basally sculptured like the second;

fourth sometimes with a little faint shagreening medially; ovipositor sheath about as long as abdomen.

Head and thorax black, sometimes varied with

rufous, extensively so in the holotype; antennae testaceous, darkened apically; palpi yellow to brown; all

coxae testaceous, the hind femora darkened apically on

the inner surfaces, and the hind tibiae and all tarsi

slightly darkened; tegulae and wing bases yellow; wings

weakly infumated apically; abdomen varying from

largely rufous to black more or less suffused with

rufous.

MALE.—Like the female except for being generally

darker; head and thorax black in the available specimens; antennae brown, 30-segmented; legs darker than

in the female, with the hind coxae more or less darkened basally and the inner sides of the hind femora

extensively darkened; dorsum of abdomen black, the

apical segments somewhat brownish.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—The holotype female and a paratype male were reared from larvae of Scythris sp. on

aster at Ottawa, Canada, 8 June 1944 and 14 June

1945, respectively, by J. McDunnough. The other

known specimens are a paratype female collected at

Highspire, Pennsylvania, 30 July 1910, by W. S.

Fisher, and a paratype male taken at Great Falls, Virginia, 20 April 1913, by R. C. Shannon.

Orgilus oregonensis, new species

Although this species is rather similar to impiger, new

species, it may be readily distinguished by its completely smooth and polished second tergite and its

broader, hardly receding temples.

FEMALE.—Length 4.5 mm. Head not wider than

thorax, in dorsal view 0.7 as long as wide; face 1.2 times

as wide as eye height, shiny, and finely and rather

closely punctate, the punctures small and shallow, face

also with the median longitudinal line more or less

keellike in lateral view; clypeus very large and closely

punctate; malar space a little longer than clypeus

and slightly more than half as long as eye height (in

ratio of 35:65), finely shagreened and mat, like the

cheeks, which are as wide as the eyes; temples rather

flat and only very slightly receding, at mideye point 0.9

as wide as eyes, smooth and polished but with a few

very weak punctures; vertex smooth and shiny, with

a few weak punctures; ocellocular line considerably

more than twice as long as diameter of an ocellus;

occipital carina broadly interrupted medially; maxillary palpi fully as long as width of head; antennae

of holotype 31-segmented, some segments in apical

third of flagellum clearly broader than long.

Mesoscutum smooth and shiny, the middle lobe with

some very weak setigerous punctures; notauli sharply

impressed and foveolate, an area of very coarse, confluent punctures at their junction just before apex of

scutum; disc of scutellum convex, smooth, and polished ; propodeum rugose, with a very small, transverse,

smooth and polished area each side of the middle at

extreme base, and with the stubs of the longitudinal

carinae that arise from the posterior margin developed

but not very strong, the areas between them rugulose;

side of pronotum rugulose in the impression, virtually
76

smooth above near upper margin; mesopleuron smooth

and polished, the longitudinal furrow a little sinuate

and strongly foveolate, a few confluent punctures below

the furrow anteriorly; metapleuron finely rugulose except on a very small triangular area in the anterior

upper angle. Hind coxa strongly rugulose on dorsal

edge, weakly roughened on outer side; hind femur

twice as long as hind coxa and nearly five times as long

as wide; inner calcarium of hind tibia slightly more

than half as long as metatarsus; tarsal claws simple.

Radial cell on wing margin about as long as stigma;

second abscissa of radius on a line with intercubitus;

stub of third abscissa of cubitus as long as second abscissa; nervulus barely postfurcal; hind wing broad,

only four times as long as its maximum width; lower

abscissa of basella just about as long as nervellus and

hardly one-third as long as mediella or maximum

width of hind wing.

Abdomen rather stout and at least as long as head

and thorax combined; first tergite 1.3 times as long as

broad at apex, finely rugulose except at base and medially at apex where there is also a small broadly oval,

shallow impression; second tergite 1.4 times as broad

at base as long, completely smooth and polished; the

following tergites also smooth and polished; second

suture very fine, weakly impressed; ovipositor sheath

just about as long as abdomen.

Black; clypeus, palpi, and antennae black; mandibles

dark brown; legs yellowish brown, hind coxae black or

blackish except outwardly on apical half where they

are yellowish brown, hind femora blackish on inner

sides; hind tibiae weakly darkened at apices, all tarsi

dark; tegulae and wing bases blackish; wings distinctly

a little infumated; venter of abdomen blackish, even

basally.

MALE.—Unknown.

HOLOTYPE.—USNM 70187.

DISTRIBUTION.—Known only from the holotype female labeled as having been collected at Corvallis,

Oregon, 2 June 1892.

Orgilus parallelus, new species

Structurally this species seems to be most similar to

medicaginis, new species, although it differs in many

details and conspicuously in its much longer ovipositor

and largely testaceous abdomen.

FEMALE.—Length 3.5-4 mm. Head a little broader

than thorax, in dorsal view about 0.6 as long as wide;

face 1.2 as wide as eye height, rugulose punctate above

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

and punctate below, shiny; malar space longer than

clypeus but hardly half as long as eye height; cheeks

shagreened and subopaque; temples about 0.75 as wide

as eyes, slightly receding, a little shagreened and with

some minute punctures near occipital margin, smooth

and shiny adjacent to eyes; occipital carina narrowly

interrupted medially; ocellocular line about twice as

long as diameter of an ocellus; antennae 30- to 33-segmented in the available specimens, some of the segments in the apical fourth nearly or quite as broad as

long.

Mesonotal lobes shiny and with minute, shallow

punctures, especially on the middle lobe; notauli completely, finely foveolate; propodeum rugulose, the stubs

of the carinae that originate at the posterior margin

rather weak and irregular; side of pronotum completely rugulose; mesopleuron smooth and polished,

the longitudinal furrow complete, sinuate, and evenly

foveolate; metapleuron rugulose on posterior half,

punctate on anterior part, shiny. Hind coxa rugulose

dorsally toward base and on upper part of outer side,

elsewhere on outer side rather granulose; hind femur

just about twice as long as hind coxa and about five

times as long as wide; inner calcarium of hind tibia

not more than half as long as metatarsus; tarsal claws

simple. Radial cell on wing margin not longer than

stigma; second abscissa of radius on a line with intercubitus; stub of third abscissa of cubitus as long as

second abscissa; nervulus just postfurcal; hind wing

about 4.6 times as long as wide; lower abscissa of basella longer than nervellus and nearly or quite half as

long as mediella.

Adomen slender; first tergite about 1.5 times as long

as broad at apex, finely longitudinally rugulose, the

dorsal keels not distinct; second tergite virtually parallel-sided and just about as long as broad at base, smooth

and shiny laterally and on apical half, usually weakly

rugulose medially on basal half; second suture fine but

distinct; third and following tergites smooth and polished; ovipositor sheath a little longer than head,

thorax, and abdomen combined.

Head usually largely black, the face more or less

ferruginous; antennae dark brown, paler basally, especially below; thorax varied with red and black, usually

darkest on dorsum; tegulae and wing bases yellow;

wings hyaline; legs brownish yellow, the hind femora

at the apices, the hind tibiae more or less and all the

tarsi somewhat darkened; basal three abdominal tergites brownish yellow, apical tergites blackish, the basal

sternites brownish.
NUMBER 3 0 77

MALE.—Unknown.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Known only from 4 female specimens comprising the type-series: 2 from Chatterton,

Ontario, collected by J. C. Martin, the holotype

29 July 1951, the paratype 20 July 1948; 1 taken on

Vernonia interior at Manhattan, Kansas, 15 June

1939, by R. Schwitzgebel; and 1 collected near Ft.

Davis, Texas, 20 July 1956, by H. and A. Howden.

Despite the wide distribution indicated by the four

specimens all seem to be the same species.

Orgilus pedalis, new species

This species closely resembles elasmopalpi, new species,

but it differs in its shorter malar space, relatively

narrower face, more coarsely sculptured hind coxae,

relatively broader hind wings and in certain other

details.

FEMALE.—Length 3.8 mm. Head very slightly

wider than thorax, in dorsal view 0.6 as long as wide;

face about 1.1 times as wide as eye height, closely,

confluently punctate over most of its surface, shagreened laterally, nearly smooth medially just above

clypeus; clypeus shiny, smooth, with only a few shallow

punctures, weakly separated from face by a very shallow impression; malar space a little longer than

clypeus but slightly less than half as long as eye height,

shagreened and mat like the cheeks; temples receding, about 0.75 as wide as eyes, largely smooth and

polished; occipital carina rather broadly interrupted

medially; ocellocular line twice as long as diameter of

an ocellus; maxillary palpi much shorter than width

of head; antennae of holotype 30-segmented, a few

of the preapical segments about as broad as long.

Mesoscutum smooth and shiny, with only some very

shallow punctures; notauli sharply impressed, very

finely punctate anteriorly, foveolate posteriorly; disc of

scutellum strongly convex, smooth and shiny; propodeum largely rugulose, smoother medially on the posterior face, the stubs of the apical longitudinal carinae

distinct though weak; side of pronotum largely finely

rugulose but granulose at the anterior margin and

nearly smooth below upper margin; mesopleuron

smooth and polished, the longitudinal furrow sinuate

and strongly foveolate; metapleuron rugulose on the

lower posterior part but largely weakly, though closely,

punctate and shiny. Hind coxa rugulose basally on

dorsal edge and on upper part of outer side, very

shiny and nearly smooth elsewhere on outer side; hind

femur twice as long as hind coxa and nearly five times

as long as wide; inner calcarium of hind tibia slightly

more than half as long as metatarsus; tarsal claws simple. Radial cell on wing margin slightly longer than

stigma; second abscissa of radius nearly on a line with

intercubitus; stub of third abscissa of cubitus as long

as second abscissa; nervulus just postfurcal; hind wing

about 4.5 as long as wide; lower abscissa of basella

hardly longer than nervellus and about one-third as

long as maximum width of hind wing.

Abdomen a little narrower than thorax; first tergite

about 1.4 times as long as wide at apex, weakly, rather

irregularly aciculate laterally behind the spiracles,

smooth and polished basally and also medially at apex,

the spiracles barely farther from each other than from

base of segment; second tergite very nearly as long as

wide at base and together with the following tergites

smooth and polished; ovipositor sheath about as long

as distance from base of scutellum to end of abdomen.

Black; the clypeus largely and the mandibles reddish

yellow; maxillary palpi pale except the apical segments

which are more or less darkened; antennae yellowish

on basal two-thirds, darkened apically and also on

upper side of scape and pedicel; legs completely yellow,

including even the tarsi except for slight darkening of

the apical segments; tegulae yellowish brown, wing

bases pale yellow; wings hyaline basally, a little infumated apically; first tergite of abdomen black except

apically, second and third tergites reddish yellow, the

fourth and following black.

MALE.—Unknown.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Known only from the holotype female taken at Oldman River, Lethbridge, Alberta,

22 June 1956, by O. Peck.

Orgilus persimilis, new species

From capsicola, new species, which this form resembles

very closely in structure it differs noticeably only in its

darker color. In fact, the similarity between the two

is so striking that it seems quite possible they may

eventually prove to be the same species. On the basis

of presently available material, however, I have considered it advisable to hold them distinct.

FEMALE.—Length about 3 mm. Head a little wider

than thorax, in dorsal view twice as broad as long;

face very slightly wider than eye height, smooth and
78 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

polished, with only a few scattered punctures on upper

half; clypeus smooth and polished, impunctate; anterior tentorial pits slightly below level of lower eye

margins; malar space about one-fourth as long as eye

height; maxillary palpi decidedly shorter than width

of head; cheeks smooth, at most with a little faint

shagreening near malar line; temples rounded, receding very gradually, about half as wide as eyes, smooth

and polished; vertex smooth; ocellocular line about

twice as long as diameter of an ocellus; occipital carina

not strong but complete; antennae 23- or 24-segmented

in the available specimens, even the shortest flagellar

segments a little longer than broad, the apical segment

with a barely visible terminal spicule.

Mesoscutum very shiny, with well-separated shallow

punctures; notauli well impressed and finely foveolate;

propodeum convex, rather strongly declivous caudad,

closely rugulose; side of pronotum smooth and polished

above the impression, weakly roughened below it;

mesopleuron smooth and polished, the longitudinal

furrow sinuate and foveolate; metapleuron largely

smooth and shiny, sometimes faintly shagreened, and

rugulose only at lower posterior margin. Hind coxa

about 0.6 as long as hind femur, smooth and shiny,

at most weakly shagreened on outer side; hind femur

less than four times as long as wide; inner calcarium of

hind tibia not more than half as long as metatarsus;

tarsal claws simple. Radial cell on wing margin barely

longer than stigma; second abscissa of radius about

on a line with intercubitus; stub of third abscissa of

cubitus punctiform; nervulus postfurcal by about half

its length; hind wing about 4.7 times as long as wide;

lower abscissa of basella about half as long as mediella.

Abdomen about as wide as thorax; first tergite about

as broad at apex as long, confluently punctate or finely

rugulose punctate, the dorsal keels indistinct, the

spiracles almost twice as far from each other as from

base of segment; second tergite about 0.6 as long as

broad at base, sculptured like the first; third and

fourth tergites similarly but somewhat more weakly

sculptured; fifth tergite largely smooth; ovipositor

sheath very slightly longer than abdomen.

Head dark brown to black; antennae and palpi

darkened; thorax black; tegulae and wing bases usually

darkened but sometimes brownish yellow, wings whitish hyaline; legs brownish yellow, the hind coxa and

the hind tibia beyond its basal whitish annulus more

or less darkened; abdomen black or blackish to largely

dark brown.

MALE.—Similar to the female but usually darker,

with the head black, the abdomen entirely black except for brownish shadings on the apical tergites, and

the hind coxae black; also the abdomen narrower

and less extensively sculptured, the first tergite noticeably longer than broad at apex, the third only partially

and very weakly sculptured and the fourth and

following smooth.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—California, Idaho. The type-series

consists of 2 females (one the holotype) and 1 male

collected at Helendale, California, in May 1955, by

W. R. M. Mason; 1 female taken at Needles, California, in April 1918, by J. C. Bradley and 2 males collected near Grand View, Idaho, 17 June 1955, by

W. F. Barr. One female, collected on Eriogonum in

Inyo County, California, 1 July 1961, by G. I. Stage,

seems to be this species but it is not included in the

type-series since it is not as dark as the types and has

21-segmented antennae.

Orgilus politus, new species

This species resembles levis, new species, in its completely smooth and polished abdomen, but it differs

in its relatively broader hind wings, longer hind

femora, and rather strongly convex propodeum.

FEMALE.—Length about 4.5 mm. Head a little

wider than thorax, in dorsal view about 0.6 as long

as wide and rather strongly excavated behind; face

slightly broader than eye height (in ratio of 70:65),

moderately convex, minutely punctate and shiny;

malar space and lower cheeks weakly shagreened;

malar space less than 0.4 as long as eye height and not

longer than clypeus; temples weakly convex, very

slightly receding, about 0.75 as wide as eyes, very shiny

but with some extremely minute punctures; occipital

carina broadly interrupted medially; ocellocular line

about twice as long as diameter of an ocellus; antennae

of holotype 36-segmented, some of the preapical segments as broad as long.

Thorax slender; smooth and very shiny, with some

exceedingly minute and weak setigerous punctures,

especially on the middle lobe; notauli deeply impressed,

finely foveolate anteriorly, more coarsely so posteriorly;

disc of scutellum longer than broad, polished; propodeum convex, largely smooth but a little rugulose

punctate or confluently punctate laterally; side of
NUMBER 30

pronotum roughened in the impression and below it,

largely smooth above; mesopleuron polished, impunctate, the longitudinal furrow strongly foveolate; metapleuron largely smooth and shiny, rugulose at lower

posterior margin. Hind coxa completely smooth and

shiny, 0.7 as long as hind femur, which is at least 4.5

times as long as wide; longer calcarium of hind tibia

a little less than half as long as metatarsus; tarsal claws

simple. Radial cell on wing margin very slightly

longer than stigma; second abscissa of radius on a line

with intercubitus; stub of third abscissa of cubitus a

little longer than second abscissa; nervulus postfurcal

by about one-third its length; hind wing about 4.6

times as long as wide; lower abscissa of basella longer

than nervellus but less than half as long as mediella.

Abdomen slender, entirely smooth and polished;

first tergite about 1.25 times as long as wide at apex,

with no indication of the basal dorsal keels; second

tergite not or barely wider at base than long; apical

segments rather conspicuously hairy; second suture

very weak; ovipositor sheath longer than head, thorax,

and abdomen combined.

Black; antennae brownish black; palpi blackish;

mandibles reddish yellow; tegulae and wing bases black

or piceous; wings subhyaline; legs, including all coxae,

bright testaceous, the forefemora basally above, extreme apices of hind femora and all the tibiae and

tarsi more or less, darkened.

MALE .—Unknown.

HOLOTYPE.—USNM 70188.

DISTRIBUTION.—Known only from 2 females (one

the holotype) collected in Riley County, Kansas, in

the month of October by C. L. Marlatt, and 1 female

taken at Halsey, Nebraska, 8 September 1957, by R. E.

Henzlik.

Orgilus pratensis, new species

This species closely resembles nitidus, new species, from

which it may be readily distinguished, however, as

shown in the description of that species.

FEMALE.—Length about 3 mm. Head distinctly

wider than thorax, in dorsal view 0.6 as long as wide;

face only a little broader (1.1 times) than eye height,

smooth and very shiny, with only a little weak sculpture

immediately below antennae; malar space longer than

clypeus and fully half as long as eye height; cheeks

shagreened and dull below, smooth above; temples

largely smooth and polished, at mideye point 0.75 as

356-598 0—69 6

79

wide as eyes, receding; ocellocular line more than twice

as long as diameter of an ocellus; occipital carina weak,

broadly interrupted medially; antennae 28- or 29-segmented in the available specimens, some segments in

apical fifth of flagellum fully as broad as long.

Mesoscutum very smooth and shiny, the lobes impunctate, notauli very fine, punctate; disc of scutellum

small, smooth, and polished; propodeum rugulose dorsally, the short posterior face largely smooth and shiny

and with the stubs of the longitudinal carinae that

arise from the posterior margin poorly developed; side

of pronotum finely rugulose; mesopleuron smooth and

polished, the longitudinal furrow a little sinuate and

finely foveolate; metapleuron largely smooth and

shiny, rugulose at lower posterior margin. Hind coxa

about half as long as hind femur, largely smooth on

outer side, rugulose above, rather strongly so toward

base; hind femur nearly five times as long as wide;

inner calcarium of hind tibia a little more than half as

long as metatarsus; tarsal claws simple. Radial cell on

wing margin barely as long as stigma; second abscissa

of radius on a line with intercubitus; stub of third abscissa of cubitus at least as long as second abscissa;

nervulus clearly postfurcal; hind wing 4.5 times as long

as wide; lower abscissa of basella fully as long as nervellus but considerably less than half as long as mediella

or than maximum width of hind wing.

Abdomen slender but at widest point nearly or quite

as wide as thorax; first tergite about 1.5 times as long

as wide, more or less longitudinally rugulose but

broadly smooth and polished at base and at apex;

second tergite as long as broad at base, smooth and

polished with only a very small shagreened area each

side of the middle near base; third and following tergites smooth and polished; ovipositor sheath about as

long as thorax and abdomen combined.

Black; clypeus ferruginous on lower half; palpi

brownish; antennae testaceous, darkened on apical

half; tegulae and wing bases yellow; wings distinctly

a little infumated; legs testaceous, the hind coxae a

little darkened basally.

MALE .—Unknown.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Known only from the type-series,

which consists of three females taken by Oswald Peck

at Scandia, Alberta, the holotype and one paratype

swept from grass range 26 June 1956, the other paratype swept from seed alfalfa 26 July 1956.
80 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Orgilus prolixus, new species

This species is very similar to fisheri, new species, from

which it may be distinguished, however, as shown in the

description of that species.

FEMALE.—Length 4 mm. Head slightly wider than

thorax, in dorsal view 0.55 as long as wide; face barely

wider than eye height (in ratio of 62:60), finely rugulose immediately below antennae, laterally shagreened

and subopaque, medially and below very shiny and

weakly punctate; clypeus indistinctly separated from

face at the middle, weakly punctate; malar space

slightly longer than clypeus but not longer than longest

segment of maxillary palpus, and 0.48 as long as eye

height, finely granulose; cheeks shagreened and rather

mat; temples receding, smooth and shiny, at mideye

point about 0.6 as wide as eyes; ocellocular line about

twice as long as diameter of an ocellus; antennae of

holotype broken, 27 segments remaining, even the

shortest of these fully as long as wide.

Thorax slender; mesoscutum smooth and shiny, the

lobes not distinctly punctate; notauli sharply impressed,

strongly foveolate; propodeum rugulose, the areas at

the posterior margin largely smooth and shiny and

separated by short stubs of longitudinal carinae, the

apical margin of the propodeum at the sides strongly

reflexed; side of pronotum entirely finely rugulose, even

just below the upper margin; mesopleuron smooth and

polished, the longitudinal furrow rather coarsely

foveolate; metapleuron entirely rugulose, rather weakly

so in the upper anterior angle. Hind coxa finely rugulose basally above, virtually smooth on outer side below;

hind femur about 4.5 times as long as wide and nearly

twice as long as hind coxa; inner calcarium of hind

tibia slightly more than half as long as metatarsus;

tarsal claws simple. Stigma not angled at origin or

radius; radial cell just about as long as stigma;

second abscissa of radius on a line with intercubitus;

stub of third abscissa of cubitus as long as second abscissa; nervulus postfurcal by less than one-fourth its

length; hind wing about 4.5 times as long as its maximum width; lower abscissa of basella considerably

longer than nervellus and nearly half as long as mediella but not nearly half as long as maximum width of

hind wing.

Abdomen long and slender, as long as head and

thorax combined; first tergite at least one and one-half

times as long as wide at apex, longitudinally rugulose

punctate but with some longitudinal striae laterally,

the basal dorsal keels weak but distinct to well beyond

the spiracles, the spiracles three times as far from apex

as from base of segment; second tergite as long as broad

at base, broadening gradually caudad, finely rugulose

punctate on basal half except for a triangular basal

median polished area, the posterior half of the tergite

smooth and polished like the following tergites; ovipositor sheath considerably longer than head, thorax,

and abdomen combined.

Black; clypeus, except narrowly at lower margin,

and palpi black; antennal scape blackish, the flagellum

yellowish brown on basal half below but darkened apically, below as well as above; legs testaceous, only the

hind coxae at their bases, the hind tibiae weakly at

their apices, and the tarsi more or less, darkened;

tegulae and wing bases dark; wings hyaline; first tergite

and the second basally black or blackish, the remainder

of the abdomen brownish.

MALE.—Unknown.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Known only from the holotype

female collected by J. C. Martin at Lake St. Peter,

Ontario, 28 June 1955.

Orgilus proprius, new species

FIGURE 34

This species is superficially most similar to infrequens, new species, but it may be readily distinguished

by its alutaceous coxae, its longer malar space and

correspondingly smaller eyes, and by its much longer

ovipositor.

FEMALE.—Length about 5 mm. Head, as seen from

above, barely wider than thorax but twice as broad as

long; temples strongly receding, a little more, than

half as wide as eyes; face rather flat, 1.2 times as wide

as eye height and closely, finely punctate; malar space

nearly one-third as long as eye height; cheeks finely

shagreened; ocelli close together, the distance between

the lateral ocelli less than the diameter of one of

them; ocellocular line more than twice as long as diameter of an ocellus; occipital carina complete; antennae 31-segmented, even the segments of the apical

fourth considerably longer than wide, the apical segment acuminate and with a short, stout terminal

spicule.

Mesoscutum shining, weakly punctate; notauli finely

foveolate; propodeum smooth laterally but with some
NUMBER 3 0 81

irregular rugae medially, and with short longitudinal

carinae arising from the posterior margin and setting

ofT five apical areas that are open in front; side of

pronotum and the mesopleuron smooth and shiny; the

mesopleural furrow a little sinuate, foveolate; metapleuron faintly alutaceous. Hind coxa alutaceous; hind

femur less than twice as long as hind coxa and 4.3 times

as long as wide; longer calcarium of hind tibia hardly

half as long as metatarsus; tarsal claw with a well-developed subbasal tooth. Stigma much shorter than

radial cell measured on wing margin; second abscissa

of radius not nearly on a line with intercubitus; stub

of third abscissa of cubitus punctiform; nervulus interstitial ; hind wing about 4.2 times as long as wide; lower

abscissa of basella much longer than nervellus and

more than half as long as mediella.

Abdomen about as wide as thorax; first tergite only

a little longer than broad at apex, the surface largely

shagreened but with some longitudinal rugulosity

laterally, the dorsal keels prominent and extending to

the apical third of the tergite; second tergite 1.4 times

as broad at base as long, the surface coriaceous or

shagreened but also with some very fine longitudinal

rugulosity; third tergite sculptured like the second but

more weakly so; remainder of abdomen smooth; ovipositor sheath one and one-half times as long as head,

thorax, and abdomen combined.

Brownish yellow; antennae, including scapes, dark

brown; palpi pale; tegulae and wing bases pale yellow;

wings hyaline; legs yellow, the apices of the hind

femora black, the hind tibiae blackish, except basally

where they are whitish and on the middle part of the

underside where they are brownish yellow, and the

hind tarsi more or less infuscated.

MALE.—Unknown.

HOLOTYPE.—In the collection of Cornell University.

DISTRIBUTION.—Known only from the holotype,

which was collected by J. C. Bradley on St. Simon's

Island, Georgia, between 22 April and 12 May 1911.

Orgilus pumilus, new species

A small yellowish species very similar to cerinus, new

species, but the ovipositor is much longer, the face is

relatively narrower, the cheeks are more strongly and

more extensively shagreened, the malar space is relatively shorter and the wings are more uniformly

smoky.

FEMALE.—Length about 2.7 mm. Head broader

than thorax, in dorsal view 0.6 as long as broad; face

a little broader than eye height (in ratio of 52:45), a

low median longitudinal keel on upper third, the surface largely smooth and shiny; malar space a little

longer than clypeus but a little less than half (0.45) as

long as eye height; cheeks shagreened and rather mat;

temples smooth and polished, 0.8 as wide as eyes; anterior tentorial pits only slightly below level of lower

eye margins; occiput carinately margined only at the

sides; antennae of holotype 29-segmented, none of the

flagellar segments as wide as long.

Mesoscutum smooth and shiny, with only scattered,

extremely shallow, barely distinct punctures; notauli

sharply impressed, foveolate; disc of scutellum nearly

flat, impunctate and polished; propodeum rugulose,

the stubs of the carinae that arise from the posterior

margin rather prominent but short; side of pronotum

rugulose in the impression, finely granulose along anterior margin, smooth and shiny below upper margin;

mesopleuron smooth and shiny, the longitudinal furrow nearly straight, foveolate; metapleuron rugulose

posteriorly below, smooth and shiny anteriorly; hind

coxa a little shagreened but shiny on upper edge toward base and on upper part of outer side; hind femur

about 4.8 times as long as wide; inner calcarium of

hind tibia half as long as metatarsus; tarsal claws simple. Radial cell on wing margin as long as stigma; second abscissa of radius on a line with intercubitus;

nervulus postfurcal by half its length; hind wing about

4.4 times as long as wide; lower abscissa of basella

about half as long as mediella.

Abdomen about as wide as thorax; first tergite 1.2

times as long as wide at apex, minutely rugulose; second tergite just about as long as wide at base, broadening noticeably caudad, finely shagreened on basal half;

remainder of dorsum of abdomen smooth and shiny;

ovipositor sheath nearly as long as the body.

Dirty honey yellow; scape and apical half of antenna darkened; legs concolorous with the body, the

femora along the dorsal edges and the tibiae and tarsi

more or less darkened; tegulae and wing bases concolorous with thorax; wings uniformly a little infumated; abdomen blackish beyond second tergite.

MALE.—Unknown.

HOLOTYPE.—USNM 70189.

DISTRIBUTION.—Known only from the holotype female taken at Seneca, South Carolina, 18 May 1962,

on a small pine tree by R. D. Eikenbary.
82

Orgilus rasilis, new species

Superficially this species somewhat resembles levis, new

species, but the malar space is relatively longer, the

tegulae and mandibles are yellow and the wings are

only very faintly infumated; also, the calcaria of the

hind tibiae are relatively a little longer, the abdomen

is more slender and the temples recede more strongly.

FEMALE.—Length 3.2 mm. Head clearly wider

than thorax (in ratio of 5:4), in dorsal view 0.6 as

long as wide; face a little (1.1 times) broader than eye

height, rather strongly convex, shiny, weakly punctate;

malar space longer than clypeus and about 0.45 as

long as eye height, granulose; cheeks largely smooth,

weakly shagreened below; temples smooth and polished, gradually receding, about 0.75 as wide as eyes;

ocellocular line more than twice as long as diameter

of an ocellus; occipital carina broadly interrupted

medially; antennae 29-segmented in the holotype, even

the shortest flagellar segments a little longer than

broad.

Mesoscutum smooth, a few weak punctures anteriorly on the middle lobe, the lateral lobes impunctate;

disc of scutellum polished, slightly convex; propodeum

rather strongly declivous, rugulose on basal half except

for a small transverse, smooth and polished area each

side of the middle at extreme base, the posterior face

with five large, rather smooth apical areas separated

by rather weak stubs of longitudinal carinae that arise

from the posterior margin; side of pronotum entirely

rugulose; mesopleuron smooth and polished, the longitudinal furrow slightly sinuate and strongly foveolate;

metapleuron largely smooth and shiny, rugulose at the

lower posterior margin. Hind coxa very finely rugulose

above toward base, somewhat granulose on upper part

of outer side; hind femur less than twice as long as

hind coxa and about 4.2 times as long as wide; inner

calcarium of hind tibia half as long as metatarsus;

claws simple. Radial cell on wing margin hardly as

long as stigma; second abscissa of radius on a line with

intercubitus; stub of third abscissa of cubitus about as

long as second abscissa; nervulus barely postfurcal;

hind wing about 4.6 times as long as wide; lower abscissa of basella much longer than nervellus and about

half as long as mediella or maximum width of hind

wing.

Abdomen very narrow, only about two-thirds as

wide as thorax at tegulae; first tergite at least one and

one-half times as long as wide at apex, smooth and polished, with only a very little weak longitudinal sculpSMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

ture laterally near the middle; second tergite as long

as broad at base, parallel-sided and entirely smooth and

polished, the suture between second and third tergites

indistinct; third and following tergites polished; ovipositor sheath longer than head, thorax, and abdomen

combined.

Black; scape and pedicel blackish, the antennal

flagellum yellowish on basal half but becoming gradually darker apically; mandibles and anterior part of

clypeus testaceous; palpi piceous; tegulae and wing

bases yellow; wings subhyaline; legs testaceous, only

slightly darkened at the apices of the hind femora and

tibiae and on the tarsi; the middle part of the dorsum

of the abdomen tinged with reddish brown.

MALE .—Unknown.

HOLOTYPE.—USNM 70190.

DISTRIBUTION.—Known only from the holotype female from the Huachuca Mts., Arizona, collected

20 September 1940, by R. H. Crandall.

Orgilus rostratus, new species

FIGURES 3, 3a, 3b

The rostriform head distinguishes this form from all

other known species with a long stub of the third abscissa of cubitus except dreisbachi, new species, from

which rostratus differs in its rather strongly infumated

wings, longer malar space and receding temples.

FEMALE.—Length around 3.3 mm. Head barely

wider than thorax, a little excavated behind, in front

view higher than its greatest width, and in dorsal view

nearly twice as wide as long; face minutely punctate,

its straight-line width just about equal to eye height;

malar space fully 0.6 as long as eye height and nearly

twice as long as longest segment of maxillary palpus,

which is about as long as the exposed part of the galea;

maxillary palpi considerably shorter than height of

head; anterior tentorial pits much below level of lower

eye margins; temples and cheeks gradually receding,

the former at mideye point about half as wide as eyes,

smooth and shining; ocellocular line a little less than

twice as long as diameter of an ocellus; occipital carina

broadly interrupted medially; antennae hardly as long

as the body, 25- to 27-segmented in the available specimens, none of the preapical segments wider than long,

the apical segment without a terminal spicule.

Lobes of mesoscutum only weakly convex, the middle lobe completely minutely punctate like the face; the

lateral lobes smoother; notauli completely and very
NUMBER 3 0

finely foveolate; scutellar disc small, finely and sparsely punctate; propodeum gradually declivous, coarsely

rugose, the apical areas set off by very prominent stubs

of longitudinal carinae that arise from posterior margin, which is very strongly reflexed at the lateral

angles; lateral face of pronotum rugose or rugose punctate in the impression, finely rugulose before the impression and nearly smooth above and behind it; mesopleuron polished, the longitudinal furrow coarsely

foveolate; metapleuron rugose posteriorly, usually

coarsely punctate anteriorly. Hind coxa 0.75 as long as

hind femur, weakly roughened above basally, otherwise

smooth; hind femur only about three times as long as its

maximum width; longer calcarium of hind tibia hardly

half as long as metatarsus, tarsal claws simple. Radial

cell on wing margin just about as long as stigma; second abscissa of radius on a line with intercubitus; stub

of third abscissa of cubitus longer than second abscissa,

which is not more, usually less, than half as long as

intercubitus; nervulus slightly postfurcal; hind wing

4.5 times as long as wide; lower abscissa of basella

much longer than nervellus and about half as long as

mediella.

Abdomen not longer, and at its widest point a little

wider, than thorax; first tergite barely longer than

wide at apex, and with two very prominent dorsal keels

extending from the base to the middle, the surface of

the tergite largely rugulose punctate; second tergite

twice as broad on posterior margin as long and closely

punctate or granulose; third and fourth tergites usually partly punctate or granulose; the following usually

smooth and shiny but sometimes a little roughened;

ovipositor sheath just about as long as the abdomen,

the ovipositor strongly decurved at the apex.

Head and thorax brown to black, usually largely

or entirely black; wings rather uniformly infumated;

legs brownish, the apices of the hind femora, and the

tibiae and tarsi sometimes, more or less darkened; abdomen usually brown.

MALE.—In essential characters like the female.

HOLOTYPE.—USNM 70191.

DISTRIBUTION.—Colorado, Wyoming, Ohio, Maryland. The type-series consists of the following: Holotype female from Steamboat Springs, Colorado, collected 21 July 1896, by C. Liebeck; 2 females taken at

the Jackson Hole Biological Station, Moran, Wyoming,

August 1961, by H. E. Evans; 1 female from Hyattsville, Maryland, collected 1 September 1912, by "Knab

and Malloch"; and 2 males, in the Canadian National

83

Collection, taken at Steubenville, Ohio, 4 September

1950.

Orgilus scaber, new species

FIGURES 15, 26, 41

This species is distinguished from related species especially by combining a completely sculptured abdomen, unusually prominent dorsal keels on the first

tergite and a very short ovipositor.

FEMALE.—Length around 3.5 mm. Head not or

barely wider than thorax, in dorsal view about 0.7 as

long as wide; face very prominent, strongly convex, its

straight-line width hardly equal to eye height, rugulose

punctate and shiny; clypeus punctate, its basal margin

on a line with the lower eye margins; malar space

about one-third as long as eye height; cheeks strongly

shagreened and dull; temples smooth and shiny, gradually receding, and at mideye point slightly more than

half as wide as eyes; vertex smooth and shiny; ocellocular line about 1.5 times as long as diameter of an

ocellus and a little shorter than the distance between

the lateral ocelli; occiput carinately margined only at

the sides; antennae usually 29- to 31-segmented, even

the shortest of the preapical segments slightly longer

than broad.

Mesoscutum shiny, closely and rather strongly

punctate, especially on the middle lobe; notauli shallow but foveolate; disc of scutellum rather flat, shiny,

with some scattered punctures; propodeum entirely

coarsely rugose, almost horizontal down the median

line; lateral face of pronotum rugose on lower twothirds, largely smooth and shiny on upper third; mesopleuron smooth and shiny, its longitudinal furrow

complete and weakly sinuate and foveolate; metapleuron completely strongly rugulose. Hind coxa rugose above, finely rugulose on outer side, dull; hind

femur about 3.5 times as long as broad; hind tibia with

a compact cluster of short stout spines on outer side

just before apex, the inner calcarium half as long as

metatarsus; tarsal claws simple. Radial cell on wing

margin hardly as long as stigma; second abscissa of

radius on a line with intercubitus; stub of third abscissa of cubitus subequal in length with the second abscissa; nervulus very slightly postfurcal; hind wing

about 4.5 times as long as wide; lower abscissa of

basella usually a little longer than nervellus but not

half as long as mediella or maximum width of hind

wing.
84 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Abdomen fully as broad as thorax and a little longer;

tergites 1-6 sculptured, the first coarsely rugose with

the dorsal keels unusually prominent and extending

back to apical third of the tergite; the following tergites successively more weakly sculptured; ovipositor

sheath about as long as abdomen beyond first segment.

Head and thorax black; lower part of clypeus and

the mandibles brownish; antennae brownish black, a

little lighter below toward bases; first tergite of abdomen black, the following usually more or less piceous

to brownish, becoming successively lighter posteriorly,

the sixth and seventh being brownish yellow; tegulae

and wing bases black or blackish; wings uniformly infumated; coxae black or blackish; trochanters, especially of the fore- and middle legs, partly darkened; all

femora and tibiae brownish yellow, all tarsi dark.

MALE.—In essential characters like the female. The

antennae are more slender and the legs are inclined

to be somewhat darker.

HOLOTYPE.—USNM 70192.

DISTRIBUTION.—Washington, British Columbia, Ontario, Quebec, and New Brunswick. The type-series

consists of the following: 9 females (one the holotype)

and 12 males reared from unidentified coleophorid

larvae at Seattle, Washington, in July and August

1942; 6 females and 3 males reared from Coleophora

sp., Langford, British Columbia; 1 female, Harwood,

Ontario, and 1 male, Brampton, Ontario, reared from

Coleophora sp.; 3 females and 1 male, Glen Morris,

Ontario, 1 male, Owen Sound, Ontario, 1 female, Gore

Bay, Ontario, 2 females, Ottawa, Ontario, 1 female,

Rougemont, Quebec, 1 female and 1 male, Bass River,

Kent County, New Brunswick, and 1 female, Shale

Hill, Albert County, New Brunswick, all reared from

Coleophora serratella (L.). There are also 1 female

from Simcoe, Ontario, labeled as having been reared

"with the red-banded leaf roller," and 1 male from

St. Vallier, Quebec, labeled "ex Alsophila pometaria

Harris"; these two indicated rearing records are probably incorrect.

Orgilus simulator, new species

This species is very similar to alacer, new species, but

it has the cheeks completely shagreened, the temples

narrower and not so smooth as in alacer, the first tergite much smoother than in that form, and the first

and second tergites with reddish markings.

FEMALE.—Length about 5 mm. Head very slightly

wider than thorax and very nearly twice as broad as

long (in ratio of 130:70) in dorsal view; face convex,

finely and closely punctate on lower half, finely rugulose punctate above, especially laterally, its straightline width just about equal to eye height; clypeus

minutely punctate, separated from face by an impression; malar space not distinctly longer than clypeus,

a little shorter than longest segment of maxillary palpus, and 0.35 as long as eye height, shagreened and

dull; cheeks completely strongly shagreened and dull;

temples about 0.75 as wide as eyes, rather strongly receding, smooth and shiny adjacent to eyes but broadly

shagreened along occipital margins; frons confidently

punctate to finely rugulose and rather opaque except

medially below median ocellus where it is smooth and

polished; ocellocular line less than twice as long as

diameter of an ocellus; occipital carina narrowly interrupted medially; antennae 37-segmented in the

holotype, a few of the preapical segments about as

broad as long.

Mesoscutum shiny, rather closely hairy, largely

smooth, only faintly punctate posteriorly on middle

lobe; notauli sharp, fine, minutely foveolate, meeting

in a rather deep and almost smooth medial impression

at apex of scutum; prescutellar furrow very finely

foveolate; disc of scutellum longer than wide at base,

weakly convex, smooth, with only scattered minute

and faint punctures; propodeum rugulose, rather

weakly so medially at base, the stubs of the carinae

that arise from the posterior margin short but prominent, especially the sublateral ones; side of pronotum

anteriorly finely aciculate on a granulose ground,

rugulose punctate in the impression, smooth and shiny

below the upper margin; mesopleuron smooth and

polished, the longitudinal furrow foveolate, weakly

so anteriorly; metapleuron rugose at posterior margin,

elsewhere smooth and shiny with only extremely shallow punctures. Hind coxa about 0.7 as long as hind

femur, largely smooth but a little shagreened on upper

part of outer side; hind femur almost 4.5 times as

long as broad; inner calcarium of hind tibia a little

less than half as long as metatarsus, the outer one

much shorter than second tarsal segment; tarsal claws

simple. Radial cell on wing margin as long as stigma,

which is very narrow; second abscissa of radius on a

line with intercubitus; stub of third abscissa of cubitus

a little longer than second abscissa, which is less than

half as long as recurrent vein; nervulus slightly postfurcal; hind wing nearly five times as long as wide;

lower abscissa of basella much longer than nervellus
NUMBER 30 85

and nearly half as long as maximum width of hind

wing but considerably less than half as long as

mediella.

Abdomen narrower than thorax; first tergite about

0.7 as broad at apex as long, very largely smooth and

shiny, only weakly sculptured laterally, the dorsal keels

not developed, the spiracles more than twice as far

from apex as from base; second tergite completely

smooth and polished, a little broader at base than long

and widening noticeably caudad, a deep impression at

base each side of the middle; remainder of abdomen

smooth; ovipositor sheath clearly longer than head,

thorax, and abdomen combined.

Black; clypeus narrowly ferruginous at lower margin; mandibles yellowish; antennae black, the flagella

dark brown below on basal third; palpi dark; tegulae

black; wing bases brownish yellow; wings distinctly

somewhat infumated; legs yellow, all tarsi black, and

extreme apices of hind femora and tibiae above a

little darkened; abdomen black or blackish but with a

yellowish spot in each apical corner of the first tergite

and a similar but much larger spot in each apical

corner of the second tergite.

MALE.—Unknown.

HOLOTYPE.—USNM 70224.

DISTRIBUTION.—Known only from the holotype

female, which was collected in Bay County, Michigan,

5 September 1937, by R. R. Dreisbach.

Orgilus solidus, new species

This species is very similar to detectus (Provancher),

but it may be distinguished from that form by its finely

shagreened face, more slender antennae, relatively

shorter malar space and shorter ovipositor.

FEMALE.—Length about 3 mm. Head 1.2 times as

wide as thorax, in dorsal view nearly twice as wide as

long; face just wider than eye height, minutely shagreened and rather mat, and with some fine punctures;

clypeus very shiny, with sparse, shallow punctures;

labial palpi thick; malar space not longer than clypeus

and hardly 0.4 as long as eye height, also just about

as long as longest segment of maxillary palpus, and

finely granulose or shagreened; cheeks shagreened and

rather mat; temples about 0.75 as wide as eyes, rounded

and rather strongly receding, smooth and shiny except

along occipital carina where they are weakly shagreened; occipital carina narrowly interrupted medially; ocellocular line a little more than twice as long

as diameter of an ocellus; antennae of holotype 31-

segmented, none of the flagellar segments quite as

broad as long.

Mesoscutum very shiny, the lobes with only very

shallow, indistinct, setigerous punctures; notauli

sharply impressed, finely foveolate, meeting in a very

acute angle, a few irregular punctures in the junction

area; disc of scutellum convex, smooth, and shiny;

propodeum rugulose, the stubs of the apical longitudinal carinae prominent, setting off three shiny, weakly

rugulose areas; side of pronotum rugulose; mesopleuron smooth and polished, the longitudinal furrow

coarsely foveolate; metapleuron largely rugulose,

weakly so in the anterior angle. Hind coxa rugulose

above, nearly smooth below on the outer side; hind

femur less than twice as long as hind coxa and about

four times as long as broad; inner calcarium of hind

tibia slightly more than half as long as metatarsus;

tarsal claws simple. Radial cell on wing margin as

long as stigma; second abscissa of radius on a line

with intercubitus; stub of third abscissa of cubitus

fully as long as second abscissa; nervulus postfurcal by

one-third its length; hind wing less than 4.5 times as

long as wide; lower abscissa of basella much longer

than nervellus and about half as long as mediella but

less than half as long as maximum width of hind wing.

Abdomen stout, not quite as long as head and

thorax combined and about as wide as thorax; first

tergite more than 0.8 as wide at apex as long, the

spiracles twice as far from each other as from base

of segment, the surface of the tergite longitudinally

rugulose striate; second tergite about 1.3 times as broad

at base as long, nearly parallel-sided, finely punctate

on the greater part of the basal two-thirds, smooth and

polished laterally and apically; second suture fine but

sharply impressed; third and following tergites smooth

and polished, the third at least as long as the following tergites combined; ovipositor sheath hardly as long

as abdomen.

Black; clypeus reddish black; palpi piceous; scape

of antenna entirely blackish, flagellum yellowish brown

below toward base, otherwise dark; legs yellowish

brown, the foretrochanters and the forefemora dorsally, the hind coxae basally, the hind femora at apices

and both middle and hind femora on inner side, all

the tibiae apically, and all the tarsi, more or less

darkened; tegulae blackish, wing bases piceous; wings

slightly inf umated; venter of abdomen dark.

MALE.—Unknown.

HOLOTYPE.—In the Canadian National Collections.
86 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

DISTRIBUTION.—Known only from the holotype female that was collected by W. R. M. Mason at Ottawa,

Canada, 29 June 1954.

Orgilus striatus, new species

This species seems to be most similar to vallis, new

species, the type of which is from the same locality, but

it is distinguished especially by its closely longitudinally

striate first tergite and its more extensively sculptured

second tergite.

FEMALE.—Length about 4 mm. Head slightly

wider than thorax, 0.7 as long as wide in dorsal view;

face 1.2 times as wide as eye height, closely and sharply

punctate, a little rugulose just below antennae; malar

space longer than clypeus and fully half as long as eye

height, finely granulose and dull; cheeks shagreened

and mat; temples at mideye point nearly as wide as

eyes (in ratio of 39:43), only slightly receding, finely

shagreened and mat along occipital carina, smooth and

polished adjacent to eyes; vertex with some punctures

in and around ocellar triangle, the area on occiput immediately below lateral ocelli a little rugulose; antennae of holotype 31-segmented, the last 5 segments

longer than broad, several immediately preceding these

about as broad as long.

Thorax rather slender; mesoscutum very shiny and

smooth with only very shallow setigerous punctures,

which are most noticeable on the middle lobe; notauli

sharply impressed, deep and foveolate, and meeting in

a rugulose area; propodeum evenly convex from front

to back, rugulose, the stubs of the two median carinae

that arise from the posterior margin rather prominent,

the others very weak; side of pronotum finely rugulose,

nearly smooth on a narrow strip along upper margin;

mesopleuron smooth and polished, the longitudinal

furrow rather weak; metapleuron largely rugulose but

shiny and nearly smooth on a small area at the upper

anterior angle. Hind coxa rugulose above; hind femur

just about twice as long as hind coxa and about five

times as long as broad; inner calcarium of hind tibia

slightly more than half as long as metatarsus; tarsal

claws simple. Radial cell on wing margin as long as

stigma; second abscissa of radius on a line with intercubitus; stub of third abscissa of cubitus as long as

second abscissa; nervulus postfurcal by at least onethird its length; hind wing 4.3 times as long as wide;

lower abscissa of basella longer than nervellus but less

than half as long as mediella.

Abdomen hardly as wide as thorax; first tergite

about 1.5 times as long as wide at apex, finely and

closely longitudinally striate, the basal dorsal keels not

developed; second tergite virtually as long as broad at

base, shiny, with some delicate, curved, transverse

rugulae near base, and beyond these finely longitudinally rugulose aciculate up to the apical fourth,

which is smooth; remainder of abdomen smooth and

polished; ovipositor sheath as long as propodeum and

abdomen combined.

Black; clypeus ferruginous on lower half; mandibles testaceous, also the antennae on the basal twothirds, the scape, however, a little darkened above;

palpi piceous; tegulae brown, wing bases brownish yellow; wings a little infumated, indistinctly so basally

but clearly so on apical half; legs yellowish, the hind

tibiae apically and the hind tarsi a little darkened.

MALE.—Unknown.

HOLOTYPE.—USNM 70193.

DISTRIBUTION.—Known only from the female holotype that was collected at Apple Valley, California,

in 1951, by P. H. Timberlake.

Orgilus strigosus, new species

This species is most similar to mundus, new species,

with which it is easily confused. It differs, however, in

its smooth and polished cheeks, relatively longer head

and less receding temples, less extensively sculptured

second tergite and completely black abdomen.

FEMALE.—Length about 4 mm. Slender, head in

dorsal view at least 0.7 as long as wide, not wider than

thorax; straight-line width of face hardly exceeding

eye height; face largely smooth and shiny but with

some well-separated sharp punctures; malar space

hardly 0.5 as long as eye height, shagreened and dull;

cheeks smooth and polished except near lower and

posterior margins where they are shagreened; temples

0.85 as wide as eyes, receding only very slightly, largely

smooth and polished; antennae 31-segmented in both

known specimens, a few segments in apical third of

flagellum a little wider than long.

Mesoscutum shiny, weakly punctate; notauli not

deep, finely foveolate and meeting in a very acute

angle; disc of scutellum polished but with a few very

shallow punctures; propodeum rugulose but with a

narrow, triangular, smooth and polished area each side

at extreme base, the anteriorly open median apical

area rugulose, defined laterally by very short stubs of
NUMBER 30 87

carinae that arise from the posterior margin; side of

pronotum entirely finely rugulose and rather dull;

mesopleuron smooth and polished, the longitudinal

furrow evenly finely foveolate; metapleuron very shiny

and smooth except posteriorly and below where it is

finely rugulose. Hind coxa decidedly more than half as

long as hind femur, rugulose above, smooth on outer

side below; hind femur barely four times as long as

broad; inner calcarium of hind tibia fully half as long

as metatarsus; tarsal claws simple. Radial cell on wing

margin as long as stigma, which is very narrow; second

abscissa of radius nearly on a line with intercubitus;

stub of third abscissa of cubitus as long as second abscissa; nervulus postfurcal by about one-third its

length; hind wing about 4.3 times as long as wide;

lower abscissa of basella longer than nervellus but less

than half as long as mediella.

Abdomen slender, narrower than thorax; first tergite largely closely, longitudinally striate, 1.5 times as

long as broad at apex, the spiracles three times as far

from apex as from base; second tergite fully as long as

wide at base, smooth and polished except for a small,

finely rugulose area each side at base, a broad polished

median space between the rugulose patches; remainder of dorsum of abdomen polished; ovipositor

sheath a little longer than head, thorax, and abdomen

combined.

Black; mandibles and lower third of clypeus ferruginous; scape entirely black, the flagellum dark brown

on basal half below, black apically; legs brownish yellow, the hind coxae blackish on basal half, all femora

more or less darkened on the inner sides, also hind

tibiae at apices and the tarsi more or less, darkened;

tegulae and wing bases brownish black; wings lightly

infumated; abdomen entirely black.

MALE.—Unknown.

HOLOTYPE.—USNM 70194.

DISTRIBUTION.—Known from two females: The

holotype from Sagehen nr. Hobart Mills, California,

21 July 1951, R. H. Goodwin; the paratype from Hope

Valley, Alpine County, California, 18 July 1948, R. C.

Bynum.

Orgilus tennis, new species

In habitus and in various details this species is most

similar to notabilis, new species. It is immediately distinguishable from notabilis, however, as from all other

species of this group of Orgilus I have seen, by its extraordinarily short calcaria of the hind tibia, the inner

of which is only one-third as long as the metatarsus.

FEMALE.—Length about 4.2 mm. A very slender

species. Head wider than thorax and in dorsal view

about twice as broad as long; face not quite as wide

as eye height, shagreened and finely punctate; eyes

very large; malar space about one-fourth as long as

eye height; maxillary palpi long, longer than width of

head; anterior tentorial pits on a line with lower eye

margins; cheeks shagreened; temples flat, receding

sharply from eye margins, finely shagreened; occiput

immargined; frons and vertex coriaceous; diameter of

lateral ocelli nearly equal to the distance between them

and more than half as long as ocellocular line; antennae of the holotype and only known specimen 33-

segmented, very slender, even the shortest flagellar

segments longer than broad.

Mesoscutum finely granulose and somewhat mat;

notauli complete, sharp, weakly foveolate; propodeum

evenly convex, uniformly granulose and with short

stubs of longitudinal carinae arising from the posterior

margin and setting off five apical areas that are open

in front; lateral face of pronotum, mesopleuron, and

metapleuron completely shagreened and rather dull;

the longitudinal mesopleural furrow indicated but very

weak. Hind coxa half as long as thorax and threefourths as long as hind femur, uniformly shagreened;

hind femur at least four times as long as broad; inner

calcarium of hind tibia only one-third as long as

metatarsus; tarsal claws simple. Radial cell on wing

margin much longer than stigma (in ratio of 50:38);

stigma large and broad, emitting radius from its middle; second abscissa of cubitus less than half as long

as recurrent vein; not even a vestige of third abscissa

of cubitus present; nervulus interstitial; hind wing

about six times as long as wide; lower abscissa of

basella more than twice as long as nervellus, more

than half as long as mediella and three-fourths as long

as maximum width of hind wing.

Abdomen very slender, much narrower than thorax;

first tergite more than twice as long as wide at apex,

a little rugulose basally and finely granulose apically,

the basal dorsal keels distinct but short; second tergite

much longer than broad at base or apex, confluently

punctate, almost rugulose basally; third tergite very

nearly as long as broad at base, also largely confluently

punctate but smooth and shining in the apical corners;

second suture sharply impressed; fourth and following

tergites smooth; ovipositor sheath considerably longer

than head, thorax, and abdomen combined.
88 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Brownish black; head in front, including clypeus,

mandibles and cheeks, brownish yellow; palpi yellow;

antennae pale brown basally, darkened apically; foreand middle legs yellow, their tibiae and tarsi a little

darkened; hind coxae blackish brown, hind trochanters

and femora pale, their tibiae and tarsi darkened; tegulae and wing bases testaceous; wings subhyaline; abdomen blackish brown but with the second tergite and

the base of the third pale brown.

MALE.—Unknown.

HOLOTYPE.—USNM 70195.

DISTRIBUTION.—Known only from the holotype female collected 9 August 1950, at Patuxent Refuge,

Bowie, Maryland, by R. T. Mitchell.

Orgilus tersus, new species

This species is suggestive of elasmopalpi, which it

closely resembles in color, but tersus is more slender,

the face is narrower, the metapleura, sides of the pronotum, face and second tergite are differently sculptured, and the hind coxae and the lower abscissa of the

basella are relatively longer; in addition, the ovipositor

is shorter.

FEMALE.—Length 3.5 mm. Head a little wider

than thorax, in dorsal view about 0.6 as long as wide;

face prominent, only very slightly (in ratio of 60:55)

wider than eye height, and finely punctate, even below;

clypeus weakly punctate, indistinctly separated from

face medially; malar space shagreened, much longer

than clypeus and a little more than half as long as eye

height; cheeks shagreened and mat; temples largely

smooth, even adjacent to the occipital carina, and at

mideye point about 0.7 as wide as eyes; frons, except

for a narrow shagreened strip beside each eye, smooth

and polished; occipital carina broadly interrupted

medially; ocellocular line more than twice as long as

diameter of an ocellus; antennae 31-segmented in the

holotype, even the shortest flagellar segments as long

as broad.

Mesoscutum smooth and shiny, with only a few

shallow and faint punctures; notauli rather shallow,

evenly foveolate, no rugose area at their junction;

disc of scutellum convex, impunctate; propodeum

coarsely rugulose, even at apex, the stubs of the longitudinal carinae that arise from the posterior margin

short, and not very distinct because of the coarse

rugosity along the apical margin; side of pronotum

completely rugose (not granulose anteriorly as in

elasmopalpi) ; mesopleuron smooth and polished, the

longitudinal furrow consisting of a row of large, contiguous punctures, the largest of these near the anterior

end; metapleuron rugose posteriorly but largely finely

shagreened and mat. Hind coxa more than half as long

as hind femur, finely granulose above and on outer

side; hind femur 4.7 times as long as wide; inner calcarium of hind tibia more than half as long as metatarsus; tarsal claws simple. Radial cell on wing margin

as long as stigma; second abscissa of radius on a line

with intercubitus; stub of third abscissa of cubitus as

long as second abscissa; nervulus very slightly postfurcal; hind wing five times as long as wide; lower

abscissa of basella half as long as mediella and fully

half as long as maximum width of hind wing.

Abdomen only slightly narrower than thorax; first

tergite 1.4 times as long as wide at apex, finely longitudinally rugulose, the spiracles only slightly farther

from each other than from base of segment; second

tergite barely wider at base than long in the holotype,

finely rugulose punctate on basal half, smooth and

polished apically; the following tergites entirely smooth

and polished; ovipositor sheath about as long as

abdomen.

Head and thorax black; lower part of clypeus and

the mandibles testaceous; antennae yellow above as

well as below on basal half, darkened apically; legs

yellow, hind femora apically, apices of hind tibiae and

the hind tarsi a little darkened; tegulae and wing

bases yellow; wings a little infumated; abdomen yellow,

darkened apically beginning with the apex of the third

tergite.

MALE.—Unknown.

HOLOTYPE.—USNM 70196.

DISTRIBUTION.—Known only from the holotype

female reared from wheat stems and roots at Pendleton, South Carolina, 24 June 1946, by D. Duncan.

Orgilus utahensis, new species

This species is very similar to coracinus, new species,

but it differs in its relatively broader and more extensively sculptured second tergite, more sharply impressed

second suture of the abdomen, the unusually prominent

occipital carina, the absence of punctures below the

longitudinal furrow of the mesopleuron, and the somewhat paler antennae.

FEMALE.—Length about 4 mm. Head barely wider

than thorax, in dorsal view 0.6 as long as wide; face

about 1.2 times as wide as eye height, rugulose punctate; clypeus with numerous small, irregular punctures;
NUMBER 3 0 89

malar space much longer than clypeus and fully half

as long as eye height, finely granulose and dull; cheeks

shagreened or finely granulose and dull; temples rather

flat, only very slightly receding, 0.8 as wide as eyes,

smooth and polished except narrowly adjacent to occipital carina where they are weakly shagreened and

punctate; occipital carina broadly interrupted medially,

unusually prominent at the sides; vertex and frons

smooth and shiny; back of head just below ocelli a

little roughened; ocellocular line nearly three times as

long as diameter of an ocellus; antennae of holotype

30-segmented, some segments of the apical third of

flagellum distinctly broader than long.

Mesoscutum very shiny, the middle lobe closely

punctate; notauli deep, foveolate; disc of scutellum

very shiny but with some small and very shallow

punctures; dorsal face of propodeum rather short, and

rugose except for a very narrow, transverse, smooth

and polished area each side of the middle at extreme

base; posterior face of propodeum with the stubs of the

longitudinal carinae rather prominent and setting off

the largely smooth apical areas; side of pronotum

finely rugulose but broadly smooth at upper margin;

mesopleuron smooth and polished, the longitudinal

furrow weakly foveolate; metapleuron smooth and

shiny, rugulose below. Hind coxa rugose on dorsal

edge, largely smooth on lower part of outer side; hind

femur a little less than twice as long as hind coxa and

barely four times as long as wide; tarsal claws simple.

Radial cell on wing margin a little shorter than stigma;

second abscissa of radius on a line with intercubitus;

stub of third abscissa of cubitus fully as long as second

abscissa; nervulus postfurcal by at least one-third its

length; hind wing about four times as long as wide;

lower abscissa of basella hardly as long as nervellus.

Abdomen at widest point about as wide as thorax;

first tergite 0.8 as wide at apex as long, the spiracles

hardly twice as far from apex as from base and nearly

twice as far from each other as from base, the surface

of the first tergite largely rugulose; second tergite 1.3

times as wide at base as long, finely rugulose punctate

on basal two-thirds except laterally where it is smooth

and polished, broadly smooth and polished at apex;

second suture fine but sharply impressed; remainder

of dorsum of abdomen smooth and shiny; ovipositor

sheath as long as propodeum and abdomen combined.

Black; clypeus black; palpi blackish; mandibles dark

reddish brown; scape of antenna entirely black, the

flagellum yellowish brown below on basal half, darkened above, blackish apically; tegulae black, wing bases

reddish brown; wings a little infumated; all coxae and

basal trochanters black, remainder of legs largely dark

brown except all femora which are more or less blackish inwardly and along dorsal edges; abdomen black

above and below.

MALE.—Unknown.

HOLOTYPE.—USNM 70197.

DISTRIBUTION.—Known only from the holotype

-female labeled as having been collected at Alta, Utah,

on 30 June.

Orgilus validus, new species

This species is extremely similar to erythropus, new

species, and it may prove to be that species, but for the

present it seems necessary to hold it distinct since it

differs in having the metapleuron completely rugulose

and the frons irregularly rugulose rather than transversely striate just above antennal foramina.

FEMALE.—Length about 4.3 mm. Head barely

wider than thorax, in dorsal view about 1.8 times as

wide as long; face about 1.25 times as wide as eye

height; closely and strongly punctate just below antennae ; clypeus closely punctate, shiny and separated from

face by a shallow impression; malar space just about

half as long as eye height, shagreened and mat; cheeks

shagreened and dull; temples rather flat, gradually

receding, about 0.8 as wide as eyes, broadly shagreened

along occipital carina, rather narrowly smooth and

polished adjacent to eyes; frons irregularly rugulose

just above antennal foramina; vertex and upper part

of back of head punctate, in part confidently so; occipital carina broadly interrupted medially; ocellocular

line hardly twice as long as diameter of an ocellus;

antennae of holotype incomplete.

Mesonotal lobes very shiny, covered with small and

extremely shallow punctures; notauli sharply impressed

and foveolate, meeting in a coarsely rugose area at

apex of scutum; disc of scutellum strongly convex,

minutely punctate and shiny; propodeum rather

coarsely rugose except for a small subtriangular smooth

and polished area each side at extreme base, the

posterior declivity abrupt and with very prominent

and long stubs of longitudinal carinae setting off several large areas that are more or less roughened; side

of pronotum rugulose; mesopleuron smooth and

polished above the irregularly foveolate longitudinal

furrow except for a rather large rugulose area below
90 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

tegula, below the furrow rather strongly, more or less

confluently, punctate; metapleuron completely rugulose. Hind coxa rugulose above and on upper part of

outer side, very weakly so on lower part; hind femur

just about twice as long as hind coxa but a little less

than five times as long as wide; inner calcarium of hind

tibia about half as long as metatarsus; tarsal claws

simple. Radial cell on wing margin about as long as

stigma; second abscissa of radius on a line with intercubitus; stub of third abscissa of cubitus much longer

than second abscissa which is hardly half as long as

intercubitus; nervulus slightly postfurcal; hind wing

4.4 times as long as wide; lower abscissa of basella just

about as long as nervellus and much less than half as

long as mediella.

Abdomen stout and fully as long as head and thorax

combined; first tergite 1.3 times as long as wide at

apex, rugulose, smooth and polished at base before

spiracles and very narrowly at apex, the dorsal keels

very weak and only apparent before spiracles, the

spiracles about twice as far from apex as from base of

segment; second tergite 1.2 times as broad at base as

long, smooth and polished; second suture very faint;

third and following tergites smooth and polished;

ovipositor sheath fully as long as propodeum and

abdomen combined.

Black; clypeus ferruginous except at base; mandibles ferruginous; palpi blackish; antennae brownish

yellow beneath toward bases, darker above; tegulae

black, wing bases brownish yellow; wings hyaline

basally, distinctly a little infumated apically; legs

reddish yellow, tarsi a little darkened.

MALE.—Unknown.

HOLOTYPE.—USNM 70198.

DISTRIBUTION.—Known only from the holotype female collected at Wellsville, Utah, 22 July 1929, by G.

F. Knowlton.

Orgilus vallis, new species

This species rather closely resemblec medicaginis in

structure, but it differs especially in its relatively narrower head and less well-defined apical areas of the

propodeum and in having some rugulose punctate

sculpture on the upper occiput; in color it differs in

lacking the reddish-yellow markings of the head and

thorax that are usually present, at least in the female

in medicaginis.

FEMALE.—Length usually 4 to 4.5 mm. Head

barely wider than thorax, in dorsal view 0.6 as long

as broad; face about 1.3 times as wide as eye height,

closely, strongly punctate and shiny, finely rugulose

below the antennal foramina; clypeus weakly punctate

and shiny: malar space longer than clypeus and just

about half as long as eye height; cheeks completely

finely granulose or strongly shagreened and mat;

temples slightly receding, at mideye point about 0.75

as wide as eyes, shagreened and mat along occipital

carina, smooth and polished adjacent to eyes; occipital

carina broadly interrupted medially; frons granulose

laterally and a little rugulose between anterior ocellus

and eyes; ocellocular line about twice as long as diameter of an ocellus; upper occiput somewhat rugosely

sculptured; antennae 31- to 33-segmented in the

available specimens, most of the segments beyond the

eighteenth fully as wide as long.

Thorax stout; mesoscutum smooth and shiny, the

middle lobe weakly punctate; notauli deeply impressed and foveolate; disc of scutellum smooth and

shiny; propodeum closely rugulose, but with a smooth

and polished area each side of the middle at base, the

posterior face not abruptly declivous and rather

strongly rugulose, the stubs of the two median longitudinal carinae that arise from the posterior margin

well developed and setting off an apical median area,

the others indistinct or very weak; side of pronotum

strongly rugulose; mesopleuron smooth and polished,

the longitudinal furrow foveolate and a few scattered

punctures below the furrow anteriorly; metapleuron

rugulose, weakly so in the anterior upper angle. Hind

coxa about half as long as hind femur, weakly rugulose above at base and punctate on upper part of outer

side, shiny; hind femur about 4.5 times as long as

wide; inner calcarium of hind tibia slightly more than

half as long as metatarsus; tarsal claws simple. Radial

cell on wing margin hardly as long as stigma; second

abscissa of radius on a line with intercubitus; stub of

third abscissa of cubitus at least as long as second

abscissa; nervulus usually postfurcal by about onethird its length; hind wing about 4.4 times as long as

wide; lower abscissa of basella usually not clearly longer

than nervellus, less than half as long as mediella and

not more than one-third as long as maximum width

of hind wing.

Abdomen only slightly narrower than thorax; first

tergite about 1.3 times as long as wide at apex, finely

longitudinally rugulose, the dorsal keels usually weak

and very short, the spiracles at least twice as far from
NUMBER 3 0 91

the apex of the segment as from the base; second tergite very nearly as long as broad at base, smooth and

polished but sometimes with a little weak punctation

on basal half; remainder of abdomen smooth; ovipositor sheath as long as propodeum and abdomen

combined.

Black; clypeus at the lower margin and the mandibles reddish; maxillary palpi somewhat darkened, the

middle segments a little lighter than the rest; antennae

brownish yellow on basal half, darkened apically;

tegulac and wing bases yellow; wings hyaline on at

least basal third, a little infumated apically; legs

testaceous, all tarsi fuscous, hind femora darkened

along upper edges, and hind tibiae more or less infuscated apically; first tergite sometimes reddish in

the apical corners; abdominal stemites piceous.

MALE.—In the single male with complete antennae

these are 32-segmented, and black except the scapes

which are reddish brown beneath; tegulae brown;

hind coxae largely blackish; otherwise the male agrees

essentially with the female.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Known only from the type-series,

which consists of 2 females (one the holotype) and

2 males collected 10 May 1955, by W. R. M. Mason

at Apple Valley, California, and 4 females taken at

the same locality 9 May 1958, by P. D. Hurd.

Orgilus walleyi, new species

This species is very similar to lateralis (Cresson), with

which it is easily confused; but it is larger, with a

somewhat longer ovipositor, and with the abdomen

more completely sculptured; in addition the second

tergite is usually relatively longer, the hind wings are

usually relatively narrower, the hind femora relatively

longer, and the palpi darker.

FEMALE.—Length 4 mm. Head in dorsal view just

about twice as wide as long and slightly wider than

thorax; face about 1.15 times as wide as eye height

and closely punctate; lower level of eye margins on a

line with anterior fentorial pits; clypeus smooth and

shiny, virtually impunctate; malar space hardly onethird as long as eye height, smooth and shiny; cheeks

finely shagreened and somewhat dull; lower temples

sculptured like the cheeks, upper temples smooth and

shiny; at mideye point temples 0.6 as wide as eyes;

occipital carina complete although weak medially;

vertex smooth, with only a few faint punctures; ocellocular line twice as long as diameter of an ocellus;

distance between lateral ocelli only slightly greater than

the diameter of one of them; antennae of available

specimens 31- or 32-segmented, even the shortest

flagellar segments slightly longer than broad, the apical

segment with a short terminal spicule.

Mesoscutum smooth and shiny, the median lobe with

some well separated and very shallow punctures, the

lateral lobes sometimes virtually impunctate; notauli

sharply impressed, finely foveolate; propodeum largely

finely granulose but a little rugulose punctate medially

behind; side of pronotum largely smooth and shiny,

the impression with a row of a few weak foveolae

above, the anterior part finely shagreened; mesopleuron smooth and polished, the longitudinal furrow

strongly sinuate and finely foveolate; metapleuron

faintly alutaceous. Hind coxa 0.6 as long as hind femur,

finely granulose or shagreened and mat; hind femur 4

times as long as broad, and also finely shagreened and

somewhat mat; inner calcarium of hind tibia slightly

more than half as long as metatarsus; tarsal claw with

a well-developed subbasal tooth. Radial cell on wing

margin about 1.4 times as long as stigma; second

abscissa of radius not nearly on a line with intercubitus;

spur of third abscissa of cubitus punctiform; nervulus

usually slightly postfurcal, sometimes virtually interstitial, very rarely postfurcal by as much as one-third

its length; hind wing usually somewhat more than

five times as long as wide; lower abscissa of basella

more than half as long as mediella or maximum width

of hind wing.

Abdomen longer than thorax; first tergite at least

one and one-half times as long as wide at apex, the

dorsal keels well developed at base but not extending

to the middle of the tergite; second tergite parallelsided and usually about as long as wide at base, the

second suture deep; tergites 1-5 completely strongly

granulose and rather dull; the following tergites

smooth and shiny; ovipositor sheath a little longer than

head, thorax, and abdomen combined.

Brownish yellow; head with a blackish spot enclosing the ocelli and extending back on occiput; palpi

blackish; antennae dark brown below toward bases,

otherwise black; pronotum black dorsally; mesoscutal

lobes each with a black marking; disc of scutellum

brownish yellow; propodeum sometimes more or less

darkened; mesopectus black; legs testaceous; hind femur black at apex; hind tibia with a narrow white annulus at extreme base, a more or less distinct subbasal

dark band and a broad dark band at the apex, all tarsi
92

more or less darkened; ttigulae and wing bases yellow;

wings hyaline.

MALE.—In general like the female, but the abdomen

is often much darker, and the sixth tergite, which is

smooth in the female, is extensively, usually completely, shagreened; the dorsal keels of the first tergite are

sometimes developed to the middle of the tergite;

in the available males the antennae are 29- to

31-segmented.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Quebec, Ontario, New York,

Michigan. The type-series consists of the following: 3

females (one the holotype) and 10 males collected at

Kazubazu, Quebec, in June and July 1933, by G. S.

Walley, the holotype on 25 July; 4 females and 2

males taken at Constance Bay, Ontario, in July 1933,

by G. S. Walley and 1 female, same locality and collector, 30 August 1932; 1 male from Lake St. Peter,

Ontario, taken 28 July 1955, by J. C. Martin; 2 females and 1 male collected in Roscommon County,

Michigan, 2 July 1939, by D. S. Bullock and R. R.

Dreisbach; 1 female from Oswego, New York, 7 July

1896; 1 female taken at Babylon, Long Island, New

York, 2 August 1938, by F. S. Blanton, and 1 female

and 1 male collected by Blanton at Bethpage, Long

Island, New York, in July 1938.

Orgilus zonalis, new species

This species is most similar to indagator Muesebeck,

but it may be readily distinguished by its largely testaceous or brownish-yellow head and second and third

abdominal tergites and its somewhat longer ovipositor.

FEMALE.—Length about 4 mm. Head very slightly

wider than thorax, in dorsal view 1.5 times as wide as

long; face at narrowest point about 1.2 times as wide

as eye height, its surface largely minutely granulose or

shagreened and with some scattered shallow punctures; clypeus similarly sculptured; malar space very

slightly longer than clypeus and about 0.43 as long as

eye height; anterior tentorial pits below level of lower

eye margins; cheeks broad and finely reticulate; temples largely smooth, at mideye point nearly as broad as

eyes (in ratio of 35:40) ; occiput carinately margined

only at the sides; ocellocular line more than twice as

long as diameter of an ocellus; vertex and frons largely

weakly shagreened or alutaceous; antennae of holotype

broken, 25 segments remaining, the shortest of the

flagellar segments at least as long as broad.

Mesoscutum largely smooth and shiny but shaSMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

greened adjacent to notauli, which are sharply impressed and foveolate and meet in an acute angle in

a very small rugose area; propodeum granulose with

some irregular rugulosity, the very short stubs of the

longitudinal carinae that arise from the posterior

margin setting off five small apical areas; side of pronotum granulose over most of its surface, rugulose in

the impression; mesopleuron smooth and shiny, the

longitudinal furrow finely foveolate; metapleuron

minutely granulose and dull, rugulose along the lower

posterior margin. Hind coxa 0.6 as long as hind femur,

finely granulose and dull above and on outer face;

hind femur about 4.3 times as long as broad; hind tibia

very slender, its longer calcarium hardly half as long

as metatarsus; tarsal claws simple. Stigma narrow, not

angled at origin of radius, which is beyond the middle; radial cell on wing margin hardly as long as stigma;

second abscissa of radius on a line with intercubitus;

stub of third abscissa of cubitus at least as long as

second abscissa; nervulus slightly postfurcal; hind wing

five times as long as wide; lower abscissa of basella

much longer than nervellus, about half as long as

mediella and more than half as long as maximum width

of hind wing.

Abdomen longer than thorax; first tergite one and

one-half times as long as wide at apex, its surface partly

rugulose, partly granulose, the basal dorsal keels not

distinct; second tergite as long as broad at base, rather

uniformly finely granulose; the suture between second

and third tergites sharply impressed; third tergite very

weakly granulose, smooth laterally and at apex; fourth

tergite in part faintly alutaceous; remainder of dorsum

of abdomen smooth; ovipositor sheath as long as

propodeum and abdomen combined.

Black; face brownish yellow, also the cheeks and

temples in part, the clypeus and the mandibles; palpi

piceous; antennae blackish, the scape and basal twothirds of flagellum beneath brownish yellow; tegulae

yellow; wings slightly infumated; legs reddish yellow,

the hind femora above at apices, the hind tibiae apically, and all the tarsi, darkened; second and third

tergites, as well as the first, second, and most of the

third sternites, brownish yellow or testaceous.

MALE.—Essentially like the female; antennae 32-

segmented.

HOLOTYPE.—USNM 70345.

DISTRIBUTION.—Known only from the holotype female and a paratype male, both reared from Aristotelia

absconditella Walker, in Washington Township, Porter

County, Indiana, 22 April 1931, by L. G. Jones.
NUMBER 30

Literature Cited

Allen, H. W.

1962. Parasites of the Oriental Fruit Moth in the Eastern

United States. United States Department of Agriculture, Technical Bulletin, 1265:1-139, 28 figures.

Ashmead, W. H.

1889 (1888). Descriptions of New Braconidae in the Collection of the U.S. National Museum. Proceedings

of the United States National Museum, 11:611 -

671.

1900. Classification of the Ichneumon Flies, or the Superfamily Ichneumonoidea. Proceedings of the

United States National Museum, 23:1-220.

1903. Two New Hymenopterous Parasites. Journal of the

New York Entomological Society, 11:144.

Bohart, R. M.

1947. Sod Webworms and Other Lawn Pests in California. Hilgardia, 17:267-308, 20 figures.

Brues, C. T.

1908. Notes and Descriptions of North American Parasitic Hymenoptera, VI. Bulletin of the Wisconsin

Natural History Society, 6:48-56.

Chittenden, F. H.

1900. Some Insects Injurious to Garden Crops. United

States Department of Agriculture, Division of Entomology Bulletin, 23:1-92, 23 figures.

Cresson, E. T.

1872a. Descriptions of North American Hymenoptera,

No. 4. The Canadian Entomologist, 4:226-231.

1872b. Hymenoptera Texana. Transactions of the American Entomological Society, 4:153-292.

1887. Synopsis of the Families and Genera of Hymenoptera of America, North of Mexico, Together with

a Catalogue of the Described Species, and Bibliography. Transactions of the American Entomological Society, Supplement 1887:1-350, 13 figures.

Cushman, R. A.

1920. North American Ichneumon-Flies, New and Described, with Taxonomic and Nomenclatorial

Notes. Proceedings of the United States National

Museum, 58:251-292, 1 figure.

Dalla Torre, C. G. de

1898. Braconidae. Catalogue Hymenopterorum, 4:1—323.

Dohanian, S. M.

1942. Parasites of the Filbert Worm. Journal of Economic

Entomology, 35:836-841.

Dowden, P. B.

1934. Recently Introduced Parasites of Three Important

Forest Insects. Annals of the Entomological Society

of America, 27:599-600.

Enderlein, G.

1905. Die Braconiden-Subfamilie Mimagathidinae m.

Zoologischer Anzeiger, 28:449-454, 7 figures.

1920. Zur Kenntnis der aussereuropaischen Braconiden.

Archiv fur Naturgeschichte, 84(A) :51-224, 11

figures.

Fahringer, J.

1937. Opuscula braconologica, 4(29-31): 257-520.

Foerster, A.

1862. Synopsis der Familien und Gattungen der Braconen. Verhandlungen des naturhistorischen Vereines

preussischen Rheinlande und Westphalens, 19:225-

288, 1 plate.

Gahan, A. B.

1919. New Reared Parasitic Hymenoptera with Some

Notes on Synonymy. Proceedings of the United

States National Museum, 55:113-128.

Granger, C.

1949. Braconides de Madagascar. Memoires de I'Institut

Scientifique de Madagasgar, Sene A, 2:1-428, 426

figures.

Haliday, A. H.

1833. An Essay on the Classification of the Parasitic Hymenoptera of Britain Which Correspond with the

Ichneumones Minuti of Linnaeus. The Entomological Magazine, 1:259-276.

Hartig, T.

1838. Jahresberichte uber die Fortschritte der Forstwissenschaft und forstlichen Naturkunde nebst Original-Abhandlungen aus dem Gebiete dieser

Wissenschaften, 1:174-210 (Insecta). Berlin.

Hellen, W.

1958. Zur Kenntnis der Braconiden (Hym.) Finnlands:

II, Subfamilie Helconinae (part.). Societas pro

Fauna et Flora Fennica. Fauna Fennica, 4:3—37.

Kolenati, F. A.

1859. Naturhistorische Durchforschung des Altvatergebirges. Jahresheft der naturwissenschaftlichen

Sektion der Mahrisch-Schlesischen Gesellschaft fur

Ackerbau und Naturkunde, (1858) 1859:1-83.

Lyle, T. G.

1920-1921. Contributions to Our Knowledge of the British Braconidae, No. 6, Agathidae. The Entomologist, 53:177-186, 227-230, 248-250; 54:6-8.

Marshall, T. A.

1885. Monograph of the British Braconidae, Part I.

Transactions of the Entomological Society of London, 1885:3-280, 6 plates.

Martin, J. C.

1956. A Taxonomic Revision of the Triaspidine Braconid

Wasps of Nearctic America (Hymenoptcra). Canada Department of Agriculture Publication, 965:

1-157, 74 figures.

McGugan, B. M., and H. C. Copple

1962. A Review of the Biological Control Attempts

Against Insects and Weeds in Canada: Part II,

Biological Control of Forest Insects, 1910-1958.

Commonwealth Institute of Biological Control,

Trinidad, Technical Communication, 2:35-115.

Morley, C.

1907. Notes on the Hymenopterous Family Agathididae.

The Entomologist, 40:217-220.

Muesebeck, C. F. W.

1933. Five New Hymenopterous Parasites of the Oriental

Fruit Moth. Proceedings of the Entomological Society of Washington, 35:48-54.
94 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

1957. Four New Species of Eubadizon Nees from Western

United States (Hymenoptera: Braconidae). Bulletin of the Brooklyn Entomological Society,

52:51-56.

1967a. Three New Reared Braconidae (Hymenoptera).

Entomological News, 78:135-139.

1967b. A New Braconid Parasite of the Potato Tuberworm. Proceedings of the Entomological Society of

Washington, 69:177-178, 2 figures.

Muesebeck, C. F. W., and Luella M. Walkley

1951. Family Braconidae. In Muesebeck et al., Hymenoptera of America North of Mexico—Synoptic Catalog. United States Department of Agriculture, Agriculture Monograph, 2:90-184.

Nees von Esenbeck, C. G.

1814. Ichneumonides adsciti in genera et familias divisi.

Magazin der Gesellschaft naturforschender

Freunde zu Berlin, 6:183-221, 1 plate.

Nickels, C. B., W. C. Pierce, and C. C. Pinkney

1950. Parasites of the Pecan Nut Casebearer in Texas.

United States Department of Agriculture, Technical Bulletin, 1011:1-21, 7 figures.

Provancher, L.

1886. Additions et Corrections au Volume II de la Faune

entomologique du Canada, Hyminopteres Fam.

V, pages 121-157, 16 figures.

1888. Additions et Corrections au Volume II de la Faune

entomologique du Canada, Hyminoptires Supplement, pages 346-438.

Ratzeburg, J. T. C.

1844. Die Ichneumonen der Forstinsecten, 1:1-224.

1848. Die Ichneumonen der Forstinsecten, 2:1-238, 3

plates.

Reinhard, H.

1865. Beitrage zur Kenntniss einiger Braconiden-Gattungen. Berliner Entomologische Zeitschrift, 9:

243-267, plate 3: figures 6 and 7.

Say, T.

1836. Descriptions of New North American Hymenoptera

and Observations on Some Already Described.

Boston Journal of Natural History, 1:210-305.

Schuster, M. F.

1959. A Pepper-Flower Budworm, Gnorimoschema

gudmanella (Wlsm.). Journal of Economic

Entomology, 52:117-118.

Szepligeti, V.

1904. Hymenoptera, Fam. Braconidae. In Wytsman,

Genera Insectorum, 22a-b: 1-253, 3 plates.

1908. Braconiden aus der Sammlung des Ungarischen

National-Museums. Annales Musei Nationalis

Hungarici, 6:398-427.

Telenga, N. A.

1933. Einige neue Agathididae-Arten aus USSR.

Konowia, 12:245-247.

Thorpe, W. H.

1930. Observations on the Parasites of the Pine-Shoot

Moth, Rhyacionia buoliana, Schiff. Bulletin of

Entomological Research, 21:387-412, 8 figures.

Tobias, V. I.

1965. Generic Groups and Evolution of the Subfamily

Euphorinae (Hymenoptera, Braconidae), Part I.

Entomologicheskoye obozreniye, 44:841-865, 61

figures.

1967. A Review of the Classification, Phylogeny and Evolution of the Family Braconidae (Hymenoptera).

Entomologicheskoye obozreniye, 46:645-669, 43

figures.

Viereck, H. L.

1912. Contributions to Our Knowledge of Bees and

Ichneumon-Flies, Including the Descriptions of

Twenty-One New Genera and Fifty-seven New

Species of Ichneumon-Flies. Proceedings of the

United States National Museum, 42:613-648.

1917 (1916). The Hymenoptera, or Wasp-like insects,

of Connecticut. State of Connecticut. State Geological and Natural History Survey, Bulletin, 22:

1-824, 15 figures, 10 plates.

Watanabe, C.

1937. A Contribution to the Knowledge of the Braconid

Fauna of the Empire of Japan. Journal of the

Faculty of Agriculture, Hokkaido Imperial

University, 42:1-188, 5 plates.

Wesmael, C.

1837. Monographic des Braconides de Belgique. Nouveaux

Memoir es Academie Roy ale des Sciences Bruxelles,

10:1-70, 1 plate.
NUMBER 30 95

FIGURES 1-5.—Heads (dorsal, front, and lateral views): 1, la, \b, Orgilus lateralis (Cresson);

2, 2a, 2b, O. gelechiaevorus Cushman; 3, 3a, 3b, O. rostratus, new species; 4, 4a, 4b, O.

immarginatus, new species; 5, 5a, 5b, O. coloradensis, new species.

356-598 0—69-
96 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

6a 6b

9a

FIGURES 6—10.—Heads (dorsal, front, and lateral views): 6, 6a, 6b, Orgilus absonus, new species;

7, la, 7b, O. coleophorae, new species; 8, 8a, 8b, O. comptanae, new species; 9, 9a, 9b, O,

medicaginis, new species; 10, 10a, 106, O. buccatus, new species.
NUMBER 30 97

11

12

14

20

FIGURES 11-20.—Hind femora: 11, Orgilus capsicola, new species; 12, O. dioryctriae Gahan;

13, O. femoralis, new species; 14, O. coleophorae, new species; 15, O. scaber, new species; 16,

O. melissopi, new species; 17, O. detectiformis Viereck; 18, O. indagator Muesebeck; 19,

O. nitidus, new species; 20, O. absonus, new species.
98

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURES 21-37.—Tarsal claws: 21, Orgilus capsicola, new species; 22, O. coleophorae, new

species; 23, O. gelechiae (Ashmead); 24, O. lepidus Muesebeck; 25, O. discrepant, new species;

26, O. scaber, new species; 27, O. macrurus, new species; 28, O. melissopi, new species; 29,

O. momphae, new species; 30, O. medicaginis, new species; 31, O. obscurator (Nees); 32, O.

longiceps Muesebeck; 33, O. dioryctriae Gahan; 34, O. proprius, new species; 35, O. lateralis

(Cresson); 36, O. disparUis, new species; 37, O. immarginatus, new species.
NUMBER 30 99

39

40 41

43

FIGURES 38-43.—Wings: 38, Orgilus obscurator (Nees); 39, O. ferns, new species; 40, O.

medicaginis, new species; 41, O. scaber, new species; 42, O. anthracinus, new species; 43;

O. momphae, new species.
100

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

45

47

FIGURES 44-49.—Wings: 44, Orgtius lateralis (Cresson); 45, O. impiger, new species; 46, O.

maculiventris (Cresson); 47, O. modicus, new species; 48, O. dreisbachi, new species; 49,

O. macruTUS, new species.
NUMBER 30 101

51

54

55

FIGURES 50-56.—Wings: 50, Orgilus detectiformis Viereck; 51, O. ejuncidus, new species; 52,

O. absonus, new species; 53, O. elasmopalpi, new species; 54, O. gelechiaevorus Cushman; 55,

O. citus, new species; 56, O. boharti, new species.
102 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 57.—Orgilus obscurator (Nees). Dorsal view of propodeum and of the first three

abdominal segments in detail at right.
Index

(Page numbers of principal accounts are in italics.)

SPECIES

ablusus, Orgilus, 10, / 7

absonus, Orgilus, 5, 12, 96, 97, 101

agrestis, Orgilus, 7, 13

alacer, Orgilus, 8, 13, 84

anthracinus, Orgilus, 7, 14, 99

arcticus Orgilus, 6,15,48

balsameae, Orgilus, 8, 16

boharti, Orgilus, 10, 77, 31, 32, 101

buccatus, Orgilus, 6, 18, 61, 73, 96

burksi, Orgilus, 11,78,28

californicus, Eubadizon, 19

californicus, Orgilus, 7, 79

capsicola, Orgilus, 3, 4, 20, 77, 97, 98

cerinus, Orgilus, 8, 21, 55, 81

cinctus, Orgilus, 6, 21, 43

citus, Orgilus, 7,22, 49, 101

clivicola, Orgilus, 9, 23, 24

cognatus, Orgilus, 9, 24, 26

coleophorae, Orgilus, 5, 24, 68, 96, 97, 98

coloradensis, Orgilus, 8, 10,25, 95

compactus, Orgilus, 9, 23, 24, 26,49

comptanae, Orgilus, 6, 27, 47, 96

conflictanae, Orgilus, 11, 18, 28

consuetus, Orgilus, 7, 28

coracinus, Orgilus, 8, 29, 70, 88

cristatus, Orgilus, 7, 30

cuneatus, Blacus, 31

cuneatus, Orgilus, 7, 19, 28, 31, 74

detectiformis, Orgilus, 10, 17, 31, 38, 64, 97, 101

detectus, Orgilus, 9, 32, 85

dioryctriae, Orgilus, 8, 33, 73, 97, 98

discrepans, Orgilus, 4, 34, 98

disparilis, Orgilus, 4,35,52, 98

dissidens, Orgilus, 7, 35, 36

dolosus, Orgilus, 7, 35,36

dreisbachi, Orgilus, 5, 12, 37, 82, 100

ejuncidus, Orgilus, 6, 38, 101

elasmopalpi, Orgilus, 11, 31,38, 77, 88,101

erythropus, Orgilus, 9, 39, 89

exilis, Orgilus, 10, 11, 40

fallax, Orgilus, 7, 41, 45

femoralis, Orgilus, 10, 11, 40,42, 97

ferus, Orgilus, 7,42, 61, 99

fictus, Orgilus, 6, 21, 43

fisheri, Orgilus, 10, 44, 80

frigidus, Orgilus, 7, 41, 45, 57

fulgens, Orgilus, 6, 45, 60

gelechiae, Blacus, 46

gelechiae, Ganychorus, 2, 46

gelechiae, Orgilomorpha, 46

gelechiae, Orgilus, 5, 24, 46,47, 68, 98

gelechiaevorus, Orgilus, 6, 47, 95, 101

glacialis, Orgilus, 7, 48

gracilis, Blacus, 49

gracilis, Orgilus, 7, 22, 49

gramineus, Orgilus, 9, 49

grapholithae, Orgilus, 8, 10, 50

hyalinus, Orgilus, 5, 51

imitator, Orgilus, 4, 52

immarginatus, Orgilus, 4, 35, 52, 95, 98

impiger, Orgilus, 9, 53, 75, 100

incognitus, Eubadizon, 66

indagator, Orgilus, 7, 28, 31, 54, 92, 97

infrequens, Orgilus, 4, 54, 65, 80

inopinus, Orgilus, 7, 55

insularis, Orgilus, 6, 55

intermedius, Orgilus, 6, 56

invictus, Orgilus, 7, 15, 57

kearfotti, Orgilus, 58

laeviventris, Ischius, 58

laeviventris, Orgilus, 58

lateralis, Eubadizon, 58

lateralis, Orgilus, 5, 20, 34,58, 63, 91, 95, 98, 100

laticephalus, Macropalpus, 73

lautus, Orgilus, 4, 59

lepidus, Orgilus, 1, 5, 60, 98

leptocephalus, Eubadizon, 2, 73

levis, Orgilus, 8, 60, 78, 82

lissus, Orgilus, 6, 45, 67

lithocolletidis, Eubadizon, 46, 47

longiceps, Orgilus, 1,6, 18, 45, 61, 73, 98

lunaris, Orgilus, 7, 30, 42, 61

macrurus, Orgilus, 3, 4, 62, 98, 100

maculiventris, Eubadizon, 63

maculiventris, Orgilus, 4, 58, 63, 100

medicaginis, Orgilus, 8, 10, 29, 64, 76, 90, 96, 98, 99

melissopi, Orgilus, 4, 54, 59, 65,97, 98

mellipes, Microgaster, 66

mellipes, Orgilus, 9, 39, 58, 66,68

mimic us, Orgilus, 11, 67

modicus, Orgilus, 9, 16, 66, 68, 100

momphae, Orgilus, 5, 24, 46, 68, 98, 99

monticola, Orgilus, 10, 69, 71

morulus, Orgilus, 8, 70

mundus, Orgilus, 10, 42, 69, 71, 86

nitidus, Orgilus, 11, 72, 79, 97

notabilis, Orgilus, 5, 18, 72, 87

obscurator, Ischius, 73

obscurator, Microdus, 2, 73

103
104

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

obscurator, Orgilus, 1, 6, 56, 61, 73, 98, 99, 102

opacus, Orgilus, 6, 74

oregonensis, Orgilus, 9, 53, 75

parallelus, Orgilus, 8, 76

pedalis, Orgilus, 11, 77

persimilis, Orgilus, 4, 77

politus, Orgilus, 8, 13, 60, 78

pratensis, Orgilus, 11, 50, 67, 72, 79

prolixus, Orgilus, 10, 44, 80

proprius, Orgilus, 5, 80, 98

pumilus, Orgilus, 9, 21, 81

rasilis, Orgilus, 10, 82

rostratus, Orgilus, 5, 12, 37, 82, 95

rugosus, Microgaster, 2

scaber, Orgilus, 5, 51, 83, 97, 98, 99

simulator, Orgilus, 8, 84

solidus, Orgilus, 9, 32, 85

striatus, Orgilus, 10, 86

strigosus, Orgilus, 10, 86

tenuis, Orgilus, 5, 72, 87

tersus, Orgilus, 7, 35, 88

utahensis, Orgilus, 8, 88

validus, Orgilus, 9, 39, 89

vallis, Orgilus, 10, 17, 86, 90

walleyi, Orgilus, 5, 58, 91

zonalis, Orgilus, 6, 56, 92

INSECT HOSTS

Acrobasis caryae, 59

Acrobasis comptoniella, 59

Acrobasis indiginella, 59

Acrobasis juglandis, 53, 59

Ancylis comptana, 27, 28

Antaeotricha humilis, 64

Aristotelia absconditella, 92

Aroga trialbamaculella, 48

Choristoneura conflictana, 28

Choristoneura fumiferana, 59

Choristoneura lambertiana ponderosana, 34

Coleophora caryaefoliella, 59

Ooleophora cretaticostella, 25

Coleophora laricella, 25

Coleophora limosipenella, 25

Coleophora monardella, 25

Coleophora salmani, 25

Coleophora serratella, 84

Coleophora ulmifoliella, 25, 59

Coleophora sp., 25, 59, 84

Coleotechnites mackiei, 59

Coleotechnites milleri, 34

Crambus sp., 18, 32

Diatraea saccharalis, 39

Dioryctria xanthaenobares, 34

Elasmopalpus lignosellus, 39

Evagora sp., 16

Evippe prunifoliella, 47

Gnorimoschema gudmanella, 21

Gracilaria sp., 47

Grapholitha conversana, 51

Grapholitha molesta, 1,61

Gretchena bolliana, 53

Keiferia glochinella, 67

Laspeyresia caryana, 29, 48, 53

Lithocolletes hamadryadella, 47

Melissopus latiferreanus, 66

Melissopus sp., 66

Mompha eloisella, 69

Mompha sp., 59

Petrova albicapitana, 59

Phthorimaea operculella, 1, 60, 67

Pulicalvaria piceaella, 16, 59

Pulicalvaria thujaella, 59

Recurvaria juniperella, 59

Recurvaria thujaella, 25

Recurvaria sp., 16

Rhyacionia buoliana, 1, 74

Stegasta bosquella, 68

Symmetischema capsicum, 20

Zeiraphera sp., 16

U. S. GOVERNMENT PRINTING OFFICE : 1970 O - 356-598


Publication in Smithsonian Contributions to Zoology

Manuscripts for serial publications are accepted by the Smithsonian Institution Press, subject

to substantive review, only through departments of the various Smithsonian museums. NonSmithsonian authors should address inquiries to the appropriate department. If submission is

invited, the following format requirements of the Press will govern the preparation of copy. (An

instruction sheet for the preparation of illustrations is available from the Press on request.)

Copy must be typewritten, double-spaced, on one side of standard white bond paper, with

I1/2" top and left margins, submitted in ribbon copy with a carbon or duplicate and accompanied

by the original artwork. Duplicate copies of all material, including illustrations, should be retained

by the author. There may be several paragraphs to a page, but each page should begin with a new

paragraph. Number consecutively all pages, including title page, abstract, text, literature cited,

legends, and tables. The minimum length is 30 pages of typescript and illustrations.

The title should be complete and clear for easy indexing by abstracting services. Taxonomic

titles will carry a final line indicating the higher categories to which the taxon is referable:

"(Hymenoptera: Sphecidae)." Include an abstract as an introductory part of the text. Identify

the author on the first page of text with an unnumbered footnote that includes his professional

mailing address. A table of contents is optional. An index, if required, may be supplied by the

author when he returns page proof.

Two headings are used: (1) text heads (boldface in print) for major sections and chapters

and (2) paragraph sideheads (caps and small caps in print) for subdivisions. Further headings

may be worked out with the editor.

In taxonomic keys, number only the first item of each couplet; if there is only one couplet,

omit the number. For easy reference, number also the taxa and their corresponding headings

throughout the text; do not incorporate page references in the key.

In synonymy, use the short form (taxon, author, date, page) with a full reference at the end

of the paper under "Literature Cited." Begin each taxon at the left margin with subsequent

lines indented about three spaces. Within a taxon, use a period-dash (.—) to separate each

reference. Enclose with square brackets any annotation in or at the end of the taxon. For

references within the text, use the author-date system: "(Jones, 1910)" or "Jones (1910)." If

the reference is expanded, abbreviate the data: "Jones (1910, p. 122, pi. 20: fig. 1)."

Simple tabulations in the text (e.g., columns of data) may carry headings or not, but they

should not contain rules. Formal tables must be submitted as pages separate from the text, and

each table, no matter how large, should be pasted up as a single sheet of copy.

Illustrations (line drawings, maps, photographs, shaded drawings) can be intermixed

throughout the printed text. They will be termed Figures and should be numbered consecutively;

however, if a group of figures is treated as a single figure, the individual components should be

indicated by lowercase italic letters on the illustration, in the legend, and in text references:

"Figure 96." If illustrations (usually tone photographs) are printed separately from the text as

full pages on a different stock of paper, they will be termed Plates, and individual components

should be lettered (Plate 9b) but may be numbered (Plate 9: figure 2). Never combine the

numbering system of text illustrations with that of plate illustrations. Submit all legends on pages

separate from the text and not attached to the artwork.

In the bibliography (usually called "Literature Cited"), spell out book, journal, and article

titles, using initial caps with all words except minor terms such as "and, of, the." (For capitalization of titles in foreign languages, follow the national practice of each language.) Underscore

(for italics) book and journal titles. Use the colon-parentheses system for volume, number, and

page citations: "10(2) :5-9." Spell out such words as "figures" and "plates" (or "pages" when

used alone).

For free copies of his own paper, a Smithsonian author should indicate his requirements on

"Form 36" (submitted to the Press with the manuscript). A non-Smithsonian author will receive

50 free copies; order forms for quantities above this amount with instructions for payment will be

supplied when page proof is forwarded.