[Reprinted from Insecutor Inscitie Menstruus, Vol. XtrV, Nos. 1-3, 1926']

UNDESCRIBED SPECIES OF CRANE-FLIES FROMTHE UNITED STATES AND CANADA(Diltera, TiPu,Iidae)
BV CHARLES P. ALEXANDER
The new species described at this time were contained incollections belonging to the United States Biological Survey,
submitted for determination by NIr. McAtee; in the Canadian
National Collection, through Mr. Curran; and in the collectionof the Museum ol Zoology of the University of Michigan,
through Professor Rogers. The writer expresses his sincerethanks to the above gentlemen and to the collectors of thematerial for the privilege of studying these flies.
Ormosia garretti, new species.
Related to O. paradiseo Alexander; median praescutal stripe
bifid; legs black with dark setae; wings with cells rst Mz
and znd M2 subequal in length.
Male: Length, 4.5-5 mm.; wing, 6.5-6.8mm.
Fernale: Length, 5.5 mm.; wing, 7-?.3 mm.
Rostrum gray; palpi black. Antennae black throughout, relatively short, the flagellar segmentsoval. Head gray, the centerof the vertex infuscated.
Pronotum gray. Mesonotal praescutum grayish laterally,
with four brown stripes, the intermediate pair more distinct,
more or less confluent behind; tuberculate pits lying on themesal edge of intermediate stripes; remainder of mesonotum
more or less infuscated. Pleura light gray. Halteres pale.
Legs with the coxae and trochanters gray; remainder of legs
black. Wings tinged with brown, the oval stigma darker
brown; faint brown seams along vein Cu1, the cord and mostof the veins beyond the cord; center of cell tst Mz and part ofM3 subhyaline; veins black, those in the costal region moreyellowish. Venation: r close to fork of R2*3; cell rsf M2latge,
approximately as long as cell znd' Mz; m only about two-fifths
the outer deflection of Ms; 'tn-cu about one-half its length beyond the fork of M; vein znd A sinuous.

III
It ..

20

INS4CUTOR INSCITI.4MENSTRUUS

Abdomen dark brown, including the hypopygium. Male
hypopygium with the basistyles stout, the large dististyle triangular in outline, the extensive outer margin densely set withmicroscopic black setulae. Gonapophyseswith a long curved
mesal spine, this directed caudad and slightly laterad, thelateral ends of the gonapophysesextending laterad as a stoutcurved spine. Tips of aedeagus strongly divergent.
Habitat: Alberta.
Holotype, J, Banff, July 18, 79?2 (C. B. D. Garrett).
Allotopotype, ?, July 79, 1922.
Paratopotypes, 5 {Q, July 13-19, 1922.
This interesting fly is named in honor of the collector, Mr.
Garrett, who has added greatly to our knowledge of the Dipteraof Western Canada. The tvoe is in the Canadian NationalCollection.
Ormosia hubbelli, new species.
General coloration brown, the praescutum with two darkbrown longitudinal stripes; wings strongly tinged with brown;
cell rsf M2 closed, very small, the veins beyond it elongate;
male hypopygium with two apical dististyles.
Male: Length about 5 mm.; wing, 5 mm.
Rostrum and palpi dark brorwn. Antennae with the scapedark brown, the flagellum a little paler brown; antennae ofmoderate length, the flagellar segments oval. Head brownish
gray, the vertex indistinctly variegated with brown
Pronotum brown.
Mesonotal praesctttum pale grayishbrown, the humeral region brighter, the disk with two conspicuous brown longitudinal stripes separated from one another by
a narrower median grayish line, the brown stripes continued
across the suture onto the scutal lobes; pseudosutural foveae
conspicuous, the mesal ends encroaching on the brown praescutal stripes; scutellum and postnotum ochreous, the former
with a capillary brown median line. Pleura clark brown, theanepisternum somewhat paler. Halteres brownish yellow, passing into dark brown, this color including the knobs. Legs
with the co-xaeobscure brownish yellorv, the fore coxae clearer;

INSqCUTOR INSCITIE MENSTRUUS

27trochanters obscure yellow; femora brown, the tips darker
brown; tibiae pale brown, the tips and the tarsi darker brown;legs long and slender without conspicuouserect trichiae. Wings
strongly tinged with brown, the stigma scarcely darker; avague darker clouding along the cord; veins dark brown. Allcells of wing with sparse but conspicuousmacrotrichiae. Venation: Scr ending just before r, Sc2 opposite one-third the lengthof Rs,' r about its length beyond the fork of Rz*a; cell rst M2
closed,very small, elongate-rectangular,gently widened distally;rn about one-half the other deflection ol Ms; veins beyond cell
rst Mz very long i m,cu just before the fork of M.
Abdomen dark brown, the genital segment and hypopygium
paler. Male hypopygium with the basistyles slender, with two
terminal dististyles, the outer slender, blackened apically, thetip feebly expanded and with the outer margin feebly serrulate;inner dististyle a little shorter, bladeJike, pale. Gonapophyses
and aedeagus forming a rather compact phallosome, the small
apophyses obtuse at tips, the aedeagus split into two points.
Habitat: Manitoba, North Dakota.
Holotype, J, Devil's Lake, North Dakota, August 8, 1920(T.H. Hubbell) .
Paratype, 3, Aweme, Manitoba, August 15, 1920 (N.
Crid,dle).
Type in the Collection of the Museum of Zoology, University of Michigan; paratype in the Canadian National
Collection. This peculiar fly is named in honor of the collector of the type. The structure of the male hypopygium is
unlike that of typical Ormosia, suggesting certain Hexatomine
types. The strict generic position of the fly must be held indoubt.
Limnophila mc-dunnoughi, new species.
General coloration gray, the praescutum with four darkbrown stripes; pseudosutural foveae large and conspicuous,black; femora pale brown, the tips blackened; wings tinged withyellow, with a sparse brown pattern; Rs long, cell rsl M2verf
small.

rNsDcuToRrNscrTr.d MENSTRUUS

INSECUTORINSCITI4 MENSTRUUS

Female: Length about Ll mm.; wing, 12 mm.
Rostrum black, pruinose; palpi black. Antennae black, thescapal segments pruinose; four basal flagellar segments enlarged, especially the first, the remainder passing throughcylindrical to linear; verticils of moderate length. Head black,heavily pruinose; vertical tubercle small but distinct.
Pronotum black, pruinose. Mesonotal praescutum gray withfour conspicuous dark brown stripes, the intermediate pair
separated only by a capillary vitta, more or less confluent infront, the posterior ends of the stripes somewhat pointed andending some distance before the suture; lateral stripes crossing
the suture; pseudosutural foveae very large, broadly triangular,black; tuberculate pits not evident; scutal lobes gray, marked
with brown; remainder of mesonotum light gray. Pleura lightgray, the dorso-pleural membrane restricted, bufiy. Halteres
pale throughout. Legs with the coxae dark, heavily light graypruinose, the apicespaler; trochanters obscurebrownish yellow;
femora pale brown, the tips narrowly but conspicuously blackened; tibiae and basitarsi pale brown, the tips narrowly darker
brown; remainder of tarsi passing into black. Wings faintly
tinged with yellow, the base and cells C and Sc more yellowish;
stigma oval, dark brown; small dark brown spots distributed
as follows: in cell R at mid-distance between arculus and originof Rs,' at origin of Rs; along the cord and outer end of cell
rst Mz; veins at apex of wing narrowly seamed with brown;a paler dash in cell rsl I adjoining the vein at two-thirds its
length; veins dark brown, paler in the costal region. No macrotrichiae on veins Rs, Rr*u, R2 or the petiole of cell Mr. Venation: Scr ending just beyond the fork of R.t, Sc2 at its tip andsubequal to it; Rs elongate, longer than R2, strongly arcuatedat origin; R2.3 and basal deflection of Ra*5 subequal; r at tipof R1 and near midlength of R2; cell rst M2 very small, rectangularly hexagonal; cell Mt a little longer than its petiole;rn-cu near midlength of cell rst Mz; anterior arculus weakly
present.
Abdomen dark brown, the tergites with transverse andobliquely longitudinal impressed lines; sternites reddish brown,

the caudal and lateral margins darker, the impressedareas lying
transversely and longitudinally.
Ovipositor with elongate
valves.
Habitat: Alberta.
Holotype, t, Nordegg, July 14, 1921 (1. McDunnough).
This interesting Limnophila is named in honor of Dr. McDunnough who collected the type. The type is in the Canadian
National Collection.

22

Limnophila

23

harperi, new species.

Belongs to the unica group; related to L. subunicn Alexander; macrotrichiae of veins very sparse, almost lacking onvein M; R2 shorter than cell tst Mz and nearly straight.
Ser ?: Wing, ?.6 mm.
Rostrum and palpi dark brown. Antennal scapedark brown;
flagellum broken. Head dark brown.
Pronotum dark brown, sparsely pruinose. Mesonotum almost black, sparsely pruinose, the median line of the praescutum and less distinct lateral stripes of the ground color;scutellum and postnotum heavily light gray pruinose. Pleura
dark, heavily pruinose, the dorso-pleural region more buffy.
Halteres dark brown, the base of the stem yellowish. Legs
with the coxae obscure yellow, the bases infuscated, more extensively on the fore coxae; trochanters yellow; femora andtibiae brown, the tips narrowly and rather indistinctly darkened; tarsi broken. Wings with a faint brownish tinge, thestigma and clouds at origin of Rs and on anterior cord darker
brown; veins dark brown. Macrotrichiae of veins relatively
sparse, on vein M there being two immediately be{ore thefork, nine on the distal half of Rs. Venation: Sc1 opposite
fork of Rs, Sc2 at its tip;Rs short, not as long as cell rst Mz,
nearly straight so cell znd R1 is irregularly trapezoidal in outline; rn-cu beyond midlength of cell rst M2.
Abdominal tergites dark brown, the sternites obscure yellow,
on the subterminal segments passing into brown; apex ofabdomen broken.
Hq,bits,t: Alberta.

24

TNSECUToR INSCITIJE MENSTNUUS

Holotype, Soc ?, AthabascaDelta, June 18, 1920 (FrancisHoQer).
The speciesis named in honor of the collector. The typehas been returned to the U. S. Biological Survey.