*

Ataenius, Aphotaenius, and Pseudataenius

of the United States and Canada

(Coleoptera: Scarabaeidae: Aphodiinae)

OSCAR L. CARTWRIGHT

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY • NUMBER 154
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SMITHSONIA N CONTRIBUTION S TO ZOOLOG Y • NUMBE R 154

Ataenius, Aphotaenius, and Pseudataenius

of the United States and Canada

(Coleoptera: Scarabaeidae: Aphodiinae)

Oscar L. Cartwright

SMITHSONIAN INSTITUTION PRESS

City of Washington

1974
ABSTRACT

Oscar L. Cartwright. Ataenius, Aphotaenius, and Pseudataenius of the United

States and Canada (Coleoptera: Scarabaeidae: Aphodiinae). Smithsonian Contributions to Zoology, number 154, 106 pages, 24 figures, 3 plates, 1974.—All

known species are fully described; literature citations, synonyms, and a key to

the species are provided; and known distribution is recorded and shown by

map figures. All species previously ascribed to the area are listed, and the present

status of each is presented. Twenty new species are added to the fauna.

Ataenius waltnerhorni Balthasar is transferred to the genus Pseudataenius.

The following are placed in synonymy: A. fleutiaui Paulian (=havanensis Balthasar), A. cribratus Van Dyke ( = confertus Fall), A. linelli Cartwright (=languidus Schmidt), A. oblongus Horn (=sculptor Harold), A. sulcatula (Chevrolat)

and A. frankenbergeri Balthasar (=brevicollis (Wollaston)), A. floridanus

Brown and A. solitarius Blatchley {=rhyticephalus (Chevrolat)).

Lectotypes are designated for Pseudataenius socialis (Horn), Ataenius insculptus Horn, A. ovatulus Horn, A. cylindrus Horn, A. aequalis Harold, A.

sulcatulus (Chevrolat), and A. cognatus (LeConte). Neotypes are established

for A. confertus Fall, A nocturnus (Nomura), A. texanus Harold, and A. strigatus

(Say).

New taxa are Pseudataenius contortus (Florida), Ataenius edistoi (South

Carolina), A. parkeri (Arizona), A. rugopygus (Texas), A. duncani (Arizona),

A. superficialis (Florida), A. pseudohirsutus (Texas), A. sabinoi (Arizona), A.

vandykei (California), A. barberi (Arizona), A. nunenmacheri (Arizona), A.

stroheckeri (Florida), A. glaseri (Maryland), A. punctifrons (Minnesota), A.

utahensis (Utah), A. hesperius (Arizona), A. sciurus (Florida), A. woodruffi,

(Florida), A. griffini (Texas), and A. stephani (Arizona).

OFFICIAL PUBLICATION DATE is handstamped in a limited number of initial copies and is recorded

in the Institution's annual report, Smithsonian Year. SI PRESS NUMBER 4820. SERIES COVER

DESICN: The coral Montastrea cavernosa (Linnaeus).

Library of Congress Cataloging in Publication Data

Cartwright, Oscar Ling.

Ataenius, Aphotaenius, and Pseudataenius of the United States and Canada (Coleoptera:

Scarabaeidae: Aphodiinae)

(Smithsonian contributions to zoology, no. 154)

1. Ataenius. 2. Pseudataenius. 3. Aphotaenius carolinus. I. Title. II. Series: Smithsonian

Institution. Smithsonian contributions to zoology, no. 154.

QL1.S54 no. 154 [QL596.S3] 591'/08s [595.7'64] 73-6912

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

Washington, D.C. 20402 - Price $1.85 (paper cover)
Contents

Page

Introduction 1

Status of Names Used for Ataenius 5

Key to Species of Aphotaenius, Pseudataenius, and Ataenius of the United States and

Canada 6

Aphotaenius carolinus (Van Dyke) 11

Pseudataenius walterhorni (Balthasar), new combination 12

Pseudataenius socialis (Horn) 14

Pseudataenius contortus, new species 16

Ataenius edistoi, new species 17

Ataenius saxatilis Cartwrigbt 18

Ataenius figurator Harold 19

Ataenius parkeri, new species 21

Ataenius rugopygus, new species 23

Ataenius duncani, new species 24

Ataenius alternatus (Melsheimer) 26

Ataenius insculptus Horn 27

Ataenius imbricatus (Melsheimer) 28

Ataenius superficialis, new species SO

Ataenius miamii Cartwright 31

Ataenius havanensis Balthasar S3

Ataenius semipilosus Van Dyke 34

A taenius hirsutus Horn 36

Ataenius pseudohirsutus, new species 87

Ataenius sabinoi, new species 38

Ataenius vandykei, new species 39

Ataenius confertus Fall 40

Ataenius saramari Cartwright 41

Ataenius convexus Robinson 42

A taenius lobatus Horn 44

Ataenius cylindrus Horn 45

Ataenius oklahomensis Brown 47

Ataenius ovatulus Horn 48

Ataenius desertus Horn 49

Ataenius languidus Schmidt 50

Ataenius barberi, new species 51

Ataenius puncticollis (LeConte) 52

Ataenius nunenmacheri, new species 53

Ataenius stroheckeri, new species 54

Ataenius texanus Harold 56

Ataenius glaseri, new species 57

Ataenius punctifrons, new species 59

Ataenius utahensis, new species 61

Ataenius hesperius, new species 61

Ataenius abditus (Haldeman) 63

Ataenius exiguus Brown 64

Ataenius sciurus, new species 65

Ataenius gracilis (Melsheimer) 67

Ataenius nocturnus (Nomura) 69

Ataenius sculptor Harold 70

Ataenius woodruffi, new species 72

Ataenius robustus Horn 73

iii
Page

Ataenius simulator Harold 74

Ataenius erratus Fall 75

Ataenius inquisitus Horn 76

Ataenius griffini, new species 77

Ataenius aequalis Harold 78

Ataenius integer Harold 79

Ataenius stephani, new species 81

Ataenius platensis (Blanchard) 82

Ataenius picinus Harold 84

Ataenius brevicollis (Wollaston) 85

Ataenius rhyticephalus (Chevrolat) 86

Ataenius brevis Fall 87

Ataenius spretulus (Haldeman) 89

Ataenius wenzelii Horn 91

Ataenius cognatus (LeConte) 92

Ataenius rudellus Fall 93

Ataenius californicus Horn 94

Ataenius strigatus (Say) 95

Ataenius apicalis Hinton 98

Ataenius fattigi Cartwright 99

Literature Cited 101

Plates 104
Ataenius, Aphotaenius, and Pseudataenius

of the United States and Canada

(Coleoptera: Scarabaeidae: Aphodiinae)

Oscar L. Cartwright

Introduction

Ataenius includes many species of small, usually

elongate, black or reddish brown (though sometimes gray or clay-colored), shining or dull, and

smooth or rarely pubescent scarab beetles averaging about 4 mm or 5 mm in length. The smallest

are about 2.5 mm long, the largest about 6.5 mm.

Many but not all species are attracted to lights,

sometimes in such numbers as to be a nuisance.

Their life cycles are not well known but apparently they are humus feeders in the soil, with a

few species attracted to decaying vegetation and

to animal dung. A very few have been taken in

ant nests and animal burrows. Larvae of seven

species were described by Jerath (1960).

The genus is worldwide, but by far the largest

numbers of species are found in the Western

Hemisphere and Australia. Over 300 species have

been described, with perhaps the greatest number

from South America. Thus far only two species,

A. picinus Harold and A. simulator Harold, are

known to have worldwide distribution.

In this account I recognize 63 species of Ataenius

from the continental United States, three species

of Pseudantaenius, and one species of Aphotaenius.

Species found in Hawaii are not included. Of the

Oscar L. Cartwright, Entomologist Emeritus, Department of

Entomology, National Museum of Natural History, Smithsonian Institution, Washington, D.C. 20560.

20 species described as new, type-localities of 6

are in Arizona, 5 in Florida, 4 in Texas, and 1

each in South Carolina, Maryland, Minnesota,

Utah, and California. Only 5 species—abditus,

gracilis, imbricatus, spretulus, and strigatus—are

recorded from Canada, but it seems likely that

at least one or two more may occur there since

several others are found in bordering American

states. Within the United States, Texas records 34

species, Florida 29, South Carolina 23, and Arizona

23.

The genus Ataenius was named by E. von Harold

(1867b:82) in describing Ataenius scutellaris from

"Columbia." He placed the genus between "Euparius" and Rhyssemus. Since he mentioned "new

genus" in this description of A. scutellaris, I consider that species to be the type of the genus. In

the same paper, von Harold also placed in Ataenius

the following four species: opatrinus, capitosus,

perforatus and hispidus. In the same year von

Harold (1867c: 100) described the genus in a separate generic description and followed it with the

description of a single species, A. opacus. The first

reference takes precedence with A. scutellaris as the

type of the genus.

Pseudataenius was proposed by Brown (1927)

with Ataenius socialis Horn as the type of the

genus. Aphotaenius was described by Cartwright

(1952) with Ataenius carolinus Van Dyke as the

type of the genus.

The genus Ataenius is placed in the aphodiine

1
SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

tribe Eupariini, as are Aphotaenius and Pseudataenius, along with several other genera—Euparia,

Euparixia,. Myrmecaphodius, and Saprosites—

found in the United States. The Eupariini agree

in having a moderately large, distinctly punctate

head with very distinct genae usually bent downward; the pronotum rarely with impressed midline, always without transverse furrows; front

tibiae usually with three teeth and anterior spur,

middle and hind tibiae usually without transverse

carinae; and the usually unexposed part of the

pygidium furrowed basally with locking device

for the tips of the elytra. Ataenius is distinguished

from other genera of the Eupariini by a combination of characters, among them head narrower than

pronotum, anterior clypeus visible from above,

pronotum laterally without denticles and at most

sparsely to moderately ciliate, sides of pronotum

not explanate, elytra often with basal margination, front tibiae with slanted anterior margin,

middle and hind tibiae not flattened, uniformly

wider from base, hind tibiae straight with outer

apical angle spiniformly prolonged, tarsi normal

with first segment often as long as the following

three segments combined.

Aphotaenius has distinct oblique carinae on the

middle and hind tibiae and two triangular teeth

instead of the usual fringe of setae; however, the

pygidium has the basal furrow and other characters of the Eupariini. In Pseudataenius the middle

and hind tarsi are one-third longer than their

tibiae, the maxillary palpi are elongate, males have

the head weakly convex, short, and wide, the pronotum weakly convex with widely arcuate sides

conspicuously fringed with setae, and the anterior

spur usually abnormal; females are normal. See

remarks under Pseudataenius socialis.

The biology of Ataenius is practically unknown.

Most of the ten or more species of this genus that

I have reared have been humus feeders, apparently

obtaining nourishment by ingesting the soil or

sand in which the adults were found and the eggs

were laid. One or two utilized old cow dung. Some

successful rearings were obtained by placing adults

in pint jars of moist sterile sand mixed with small

amounts of finely ground, dry-cereal breakfast

foods.

METHODS AND TERMINOLOGY.—All measurements were made through a binocular microscope

(A&O) equipped with an ocular linear micrometer. Examinations were made with the same microscope equipped with X 9 oculars and X 3, X 6,

and X 9 objectives.

The usual terminology, as indicated in Figure

1, is used in the descriptions. Two new terms,

"fluting" and "metasternal triangle," are introduced. Fluting describes the structure of the anterior margin of the abdominal sterna. Metasternal

triangle refers to the triangular depression in front

of the posterior coxal plates. As used in this paper,

the descriptive term "alutaceous" indicates surface

sculpture of minute, shallow, contiguous pits or depressions as seen on the elytra of Ataenius wenzelii

Horn and A. abditus (Haldeman).

Since in the past it has been practically impossible to be sure of an identification in Ataenius

without an examination of the type, I have made

a serious effort to locate and examine types, preferably the holotype. Where only cotypes were available a lectotype has been designated; and, for the

same reason, four neotypes have been so labeled.

The types of Ataenius confertus Fall, A. nocturnus

(Nomura), A. texanus Harold, and A. strigatus

(Say) have been lost and presumably destroyed.

Except for these four species, I believe I have seen

types of all the species I have listed from the

United States and Canada (see listing of status of

names used for Ataenius, below).

Unless otherwise indicated, all paratypes are in

the National Museum of Natural History, Smithsonian Institution, Washington, D. C.

ACKNOWLEDGMENTS.—Financial support, for

which I am deeply grateful, was provided for this

study by National Foundation Grant No. GB 1434.

I have examined specimens from practically

every major museum, university, college, and private collection in the United States and Canada,

as well as in many other countries. Nearly every

fellow entomologist and colleague whom I have

known over the past forty years has added to the

study at some time.

Museums, universities, and other institutions,

and members of their staffs, that have been very

helpful include the following:

INSTITUTIONS IN THE UNITED STATES AND CANADA Academy

of Natural Sciences of Philadelphia, Philadelphia, Pennsylvania

(M. G. Emsley, Harold J. Grant, N. D. Jago, James A. G. Rehn).

Alabama Museum of Natural History, University, Alabama

(Walter B. Jones). American Museum of Natural History,

New York, New York (M. A. Cazier, Lee Herman, Jr.,
NUMBER 154

metasternal triangle

posterior

femoral line

accessory spine

fluting

FIGURE 1.—a, Underside of Ataenius strigatus (Say), b, Lateral view of pronotum of A. parkeri,

new species, c, Lateral view of pronotum of A. duncani, new species, d, Lateral and distal views

of posterior tibia of A. picinus Harold, e, Middle femur of A. erratus Fall. /, Lateral and distal

views of posterior tibia of A. erratus Fall, g. Lateral and distal views of posterior tibia of

Aphotaenius carolinus (Van Dyke).

Jerome D. Rosen). Archbold Biological Station, Lake Placid,

Florida (Richard Archbold, S. W. Frost). Arizona State

College, Tempe, Arizona (Richard S. Beal, Jr.). Bernice P.

Bishop Museum, Honolulu, Hawaii (£. H. Bryan, Jr., J. L.

Gressitt, G. A. Samuelson). Burke Museum, University of

Washington, Seattle, Washington (Melville H. Hatch). California Academy of Sciences, San Francisco, California (J. W.

Green, Hugh B. Leech). Canada Department of Agriculture,

Ottawa, Canada (E. C. Becker, W. J. Brown, Milton Campbell, H. F. Howden). Carnegie Museum, Pittsburgh, Pennsylvania (George Wallace). Carthage College, Kenosha, Wisconsin

(Walter R. Suter). Cincinnati Museum of Natural History,

Cincinnati, Ohio (Ralph Dury). Clemson University, Clemson, South Carolina (J. A. Berly, Frances McAlister). Cornell

University, Ithaca, New York (Henry Dietrich, L. L. Pechuman). Delta Branch Experiment Station, Stoneville, Mississippi (R. H. Roberts). East Tennessee State University,

Johnson City, Tennessee (Wallace A. Tarpley). Emory University Museum, Emory University, Georgia (P. W. Fattig).

Field Museum of Natural History, Chicago, Illinois (H.

Dybas, R. Wenzel). Florida Department of Agriculture,

Gainesville, Florida (R. E. Woodruff). Indiana University,

Bloomington, Indiana (Frank N. Young). Illinois Natural

History Survey, Urbana, Illinois (M. W. Sanderson). Iowa

State College, Ames, Iowa (Jean L. Laffoon). Iowa Wesleyan

College, Mount Pleasant, Iowa (H. E. Jaques). Kansas State
SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

University (KSU), Manhattan, Kansas (Howard E. Evans).

Los Angeles County Museum, Los Angeles, California (C. L.

Hogue). Michigan State University, East Lansing, Michigan

(Roland L. Fischer). Museum of Comparative Zoology (MCZ),

Cambridge, Massachusetts (E. A. Chapin, P. J. Darlington,

Jr., J. F. Lawrence, R. E. Morel). Museum of Zoology, University of Michigan, Ann Arbor, Michigan (T. H. Hubbell).

National Museum of Natural History [under the catalog

numbers of the United States National Museum (USNM)].

Smithsonian Institution, Washington, D.C. North Carolina

Department of Agriculture (C. S. Brimley, D. L. Wray).

North Dakota State University, Fargo, North Dakota (Robert

G. Helgesen, R. L. Post). Northwestern University, Evanston,

Illinois (Orlando Park). Ohio State University (OSU), Columbus, Ohio (Paul H. Freytag, J. N. Knull, C. A. Triplehorn).

Pennsylvania Bureau of Plant Industry, Harrisburg, Pennsylvania (E. E. Simons). Pennsylvania Department of Agriculture, Harrisburg, Pennsylvania (Larry D. Rhoads). Purdue

University, Lafayette, Indiana (Ross H. Arnett, Leland

Chandler, Ray T. Everly). Rutgers University, New Brunswick, New Jersey (J. B. Smith). South Dakota State University, Brookings, South Dakota (E. U. Balsbaugh, Jr., H. C.

Severin). Southern Illinois University, Carbondale, Illinois

(John C. Downey). State of Maine Forest Service, Augusta,

Maine (A. E. Brower). Tall Timbers Research Station, Tallahassee, Florida (E. V. Komarek). Texas Technological College,

Lubbock, Texas (James Reddell). United States Department

of Agriculture (USDA), Washington, D.C. Universite Laval,

Quebec, Canada (R. Beique). Universite de Montreal, Montreal, Canada (A. Roberts). University of Alberta, Edmonton,

Canada (G. E. Ball, D. R. Whitehead). University of Arizona,

Tucson, Arizona' (G. D. Butler, Jr., Floyd G. Werner). University of Arkansas, Fayetteville, Arkansas (L. H. Ralston).

University of California, Berkeley, California (Paul D. Hurd,

W. J. Turner). University of California, Davis, California

(A. T. McClay). University of California, Riverside, California (Saul Frommer, Alan Hardy). University of Delaware,

Newark, Delaware (W. A. Connell). University of Idaho,

Moscow, Idaho (W. F. Barr). University of Illinois, Urbana,

Illinois (Richard B. Selander). University of Kentucky, Lexington, Kentucky (T. C. Barr). University of Louisville,

Louisville, Kentucky (C. V. Covell, Jr.). University of Kansas

(U.Kans.), Lawrence, Kansas (W. D. Edmonds). University

of Miami, Coral Gables, Florida (H. F. Strohecker). University of Minnesota, St. Paul, Minnesota (E. F. Cook). University of Missouri, Columbia, Missouri (Wilbur R. Enns).

University of Nebraska, Lincoln, Nebraska (B. C. Ratcliffe).

University of Vermont, Burlington, Vermont (R. T. Bell).

Utah State University, Logan, Utah (George F. Knowlton).

INSTITUTIONS IN OTHER COUNTRIES The British Museum

(Natural History), London, England (J. Balfour-Browne, E.

B. Britton. J. P. Doncaster, R. D. Pope). Colegio de Postgraduados, Chapingo, Mexico (Francisco Pacheco). C.S.I.R.O.,

Canberra, Australia (K. H. L. Key, M. S. Upton). Depart

mento de Zoologia, Sao Paulo, Brazil (Karol Lenko, Silverio

Pereira, Ernesto Rabello, Hans Rcichardt). Department of

Agriculture, Station Paget East, Bermuda (I. W. Hughes).

Deutsches Entomologisches Institut, Berlin, D.D.R. (H.

Dobler, G. Friese, R. Gaedike, F. Hieke). Dominion Museum,

Wellington, New Zealand (R. G. Ordish). Institut National

de la Recherche Agronomique, Petit-Bourg, Guadeloupe (J.

Bonhls, L. Gruner). Instituto Biologico, Sao Paulo, Brazil (J.

P. da Fonseca). Instituto de Biologia, Cidade Universitaria,

Recife, Brazil (M. C. Arcanjo). Instituto de Biologia, Havana,

Cuba (Fernando de Zayas). Kyushu University, Kyushu,

Japan (Teiso Esaki). Museum G. Frey, Tutzing bei Munchen,

Germany (M. von Falkenhayn, G. Frey, G. Haaf). Museum

National d'Histoire Naturelle, Paris, France (Mme. Bons,

G. Colas, Mile. Suzanne Marre, R. Paulian, A. Villiers).

Museo de Historia Natural, Javier Prado, Lima, Peru

(F. BlancasS.). Museum fur Naturkunde, der HumboldtUniversitat zu Berlin (F. Hieke). The National Science

Museum, Tokyo, Japan (T. Nakane). Naturhistorisches Museum, Vienna, Austria (F. Janczyk, Rudolf Petrovitz). Naturhistoriska Riksmuseet, Stockholm, Sweden (Gunner Hallin,

Karl Johan Hedqvist, Rene Malaise, Per Inge Persson).

Norodni Muzeum V. Praze, Prague, Czechoslovakia (L.

Haberlandt, J. Jclfnck). Rijksmuseum van Naturlijke Historic, Leiden, Netherlands (J. Krikken). The Rockefeller

Foundation, Bogota, D. E., Colombia (Robert F. Ruppel).

Staatliches Museum fur Tierkunde, Dresden, D.D.R (R.

Hertel, R. Krause). Ungarischen Naturwissenschaftlichen

Museum, Budapest, Hungary (S. Endrodi). U.N./S.P.C.

Rhinoceros Beetle Project, Apia, W. Samoa (A. Catley).

Universidad Central de Venezuela, Caracas, Venezuela (F.

Fernandez-Yepez, C. J. Rosales, J. A. Roze). Universidad de

Concepci6n, Concepci6n, Chile (T. Cekalovic-K.). University

of Bristol, Bristol, England (H. E. Hinton). University of

Puerto Rico, Mayaguez, Puerto Rico (J. M. Capriles, J. A.

Ramos). University of Puerto Rico, Rto Piedras, Puerto Rico

(E. G. Matthews). University of Queensland, Brisbane, Australia (T. E. Woodward). Zoological Institute, Lund, Sweden

(Bengt-Olof Landin). Zoologische Sammlung des Bayerischen

Staates, Munich, Germany (Heinz Freude). Zoologisch Museum der Universiteit van Amsterdam (J. P. Duffels).

Material has been examined from the following

private collections:

Patricia H. Adams, M. Alvarenga, R. H. Arnett, John R.

Baker, V. Balthasar, W. F. Barr, R. S. Beal, B. Benesh, C. R.

Biederman, C. M. Biezanko, Carlos Bordon-A., L. J. Bottimer,

Harold E. Box, Carlos S. Carbonell, C. C. Chantal, J. F. Gates

Clarke, R. H. van Doesburg, Jr., Byrd K. Dozier (B.K.D.),

Herbert Dozier, R. R. Dreisbach, D. K. Duncan, M. Druckenbrod, Ralph Dury, Truman Fincher, O. S. Flint, Everett J.

Ford, Jr., Henry Frania, R. J. Frederick, R. C. Froeschner,

John D. Glaser, R. Gordon, Robert C. Graves, J. W. Green,

Charles W. Griffin, Paul D. Harwood, R. L. Hoffman, H. F.

Howden, O. E. Hunt, Federico Islas-S., Monohar L. Jerath,

Vernon M. Kirk, Borys Malkin, Sizumu Nomura, A. T. McClay, G. H. Nelson, F. W. Nunenmacher, Virgil H. Owens,

Frank H. Parker, C. R. Patrick, III, Jerry A. Payne, Fritz

Plaumann, E. Avery Richmond, C. V. Riley, John H. Robinson, Mark Robinson, William Rosenberg, J. H. Russell, Grace

Sandhousc, L. W. Saylor, Joe Schuh, J. B. Smith, Paul and

Phyllis Spangler, Ordway Starnes, Harrison R. Steeves, Jr.,

Karl H. Stephan, W. H. Tyson. J. B. Wallis, Thomas Walker,
NUMBER 154

Jr., E. Walz, Floyd G. Werner, Charles E. White, L. A. Willahan, R. E. Woodruff.

Among the artists, preparators, and typists who

have assisted in various ways in the preparation of

specimens and manuscripts are Elsie Froeschner,

A. Pizzini, Janice Foster White, Gloria House,

Gordon Brooks, Phyllis Spangler, and Joan B.

Miles.

To all who have contributed in any way I give

my sincere thanks.

Status of Names Used for Ataenius

Many names that have been used for Ataenius

occurring in the United States and Canada are

now recognized synonyms. Others have been used

through misidentifications and should be removed

from our lists. Lists and catalogs published by

Melsheimer, Gemminger and Harold, Haldeman,

LeConte, Crotch, Austin, Henshaw, Leng, and

Blackwelder are among those consulted. My opinions regarding the present status of all the names

used or now proposed are as follows:

Named used

abditus (Haldeman), 1848:106

aequalis Harold, 1880:40

alternans Dejean, 1836:163

alternatus (Melsheimer), 1844:137

anticus Fall, 1930:105

apicalis Hinton, 1937b: 195

attenuator Harold, 1874:22

barberi, new species

brevicollis Wollaston, 1854:229

brevinotus Chapin, 1940:39

brevis Fall, 1930:98

brimleyi Wray, 1967:45

californicus Horn, 1887:84

carolinus Van Dyke, 1928:157

chiliensis Solier, 1851:72

cognatus (LeConte), 1858:65

confertus Fall, 1909:162

consors Fall, 1930:104

contortus, new species

convexus Robinson, 1940:149

crenatostriatus Sturm, 1843:111

cribratus Van Dyke, 1928:156

Present status

valid

valid

Pnomen nudum? =•

alternatus

(Melsheimer)

valid

synonym of platensis

(Blanchard)

valid

ex Colombia; not in

USA

valid

valid

ex Cuba; not in USA

valid

nomen nudum

valid

Aphotaenius

synonym of gracilis

(Melsheimer)

valid

valid

synonym of spretulus

(Haldeman)

Pseudataenius

valid

PMexico; not in USA

synonym of confertus

Fall

Named used

cylindricus Schmidt, 1922:454

cylindrus Horn, 1871:289

darlingtoni Hinton, 1937b: 179

desertus Horn, 1871:289

duncani, new species

edistoi, new species

erratus Fall, 1930:96

exiguus Brown, 1932:10

falli Hinton, 1934:119

fattigi Cartwright, 1948:151

figurator Harold, 1874:24

floridanus Brown, 1930:3

frankenbergeri Balthasar, 1938:56

glaseri, new species

gracilis (Melsheimer), 1844:137

griffini, new species

haroldi Steinheil, 1872:556

havanensis Balthasar, 1938:55

hesperius, new species

hirsutus Horn, 1871:288

horni Harold, 1874:19

imbricatus (Melsheimer), 1844:136

inops Horn, 1887:73

inquietus Fall, 1930:94

inquisitus Horn, 1887:81

insculptus Horn, 1887:70

integer Harold, 1868:86

laeviventris Horn, 1887:74

languidus Schmidt, 1910:31

lecontei Harold, 1874:20

linelli Cartwright, 1944:28

lobatus Horn, 1871:287

lucanus Horn, 1871:288

ludovicianus Fall, 1930:100

miamii Cartwright, 1934:200

nocturnus (Nomura), 1943:77

nunenmacheri, new species

oblongus Horn, 1871:286

oklahomensis Brown, 1930:4

ovatulus Horn, 1871:286

parkeri, new species

picinus Harold, I867a:281

platensis (Blanchard), 1846:185

Present status

misspelling of

cylindrus Horn

valid

synonym of picinus

Harold

valid

valid

valid

valid

valid

synonym of spretulus

(Haldeman)

valid

valid

synonym of rhytieephalus (Chevrolat)

synonym of brevicollis

Wollaston

valid

valid

valid

ex Argentina; not in

USA

valid

valid

valid

synonym of cylindrus

Horn

valid

synonym of puncticollis (LeConte)

lapsus for inquisitus

Horn

valid

valid

valid

synonym of lobatus

Horn

valid

synonym of ovatulus

Horn

synonym of languidus

Schmidt

valid

Baja California; not

in USA

synonym of wenzelii

Horn

valid

valid

valid

synonym of sculptor

Harold

valid

valid

valid

valid

valid
SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Named used

pseudohirsutus, new species

puncticollis (LeConte), 1858:65

punctifrons, new species

rhyticephalus (Chevrolat), 1864:413

robustus Horn, 1871:285

rudellus Fall, 1930:103

rugopygus, new species

sabinoi, new species

salutator Fall, 1930:99

saramari Cartwright, 1939:360

saxatilis Cartwright, 1944:29

schwarzi (Linell), 1896:721

sciurus, new species

sculptilis Harold, 1868:86

sculptor Harold, 1868:85

semipilosus Van Dyke, 1928:158

simulator Harold, 1868:85

socialis Horn, 1871:287

Present status

valid

valid

valid

valid

valid

valid

valid

valid

synonym of picinus

Harold

valid

valid

synonym of simulator

Harold

valid

ex Venezuela; not in

USA

valid

valid

valid

Pseudataenius

Named used

solitarius Blatchley, 1928:69

sordidus Harold, 1869:103

spretulus (Haldeman), 1848:106

stephani, new species

stercorator (Fabricius), 1775:20

strigatus (Say), 1823:212

strigicauda Bates, 1887:96

stroheckeri, new species

sulcatulus (Chevrolat), 1864:413

superficialis, new species

texanus Harold, 1874:23

utahensis, new species

vandyhei, new species

waltherhorni Balthasar, 1938:55

wenzelii Horn, 1887:77

woodruffi, new species

Present status

synonym of rhyticephalus (Chevrolat)

synonym of imbricatus

(Melsheimer)

valid

valid

South America; not in

USA

valid

ex Mexico; not in

USA

valid

synonym of brevicollis

Wollaston

valid

valid

valid

valid

Pseudataenius

valid

valid

Key to Species of Aphotaenius, Pseudataenius, and

Ataenius of the United States and Canada

1. Middle and hind tibiae with distinct oblique carinae as in Aphodius, two triangular

teeth instead of usual fringe of terminal setae. (Indiana, Ohio, Maryland to Florida

1. Aphotaenius carolinus (Van Dyke)

Middle and hind tibiae without oblique carinae, tibiae with usual fringe of terminal

setae 2

2(1). Middle and hind tarsi one-third longer than their tibiae, maxillary palpi elongate;

males with head weakly convex, short and wide, pronotum weakly convex, widely

arcuate sides, conspicuous fringe of setae, anterior spur usually abnormal. (Pseudataenius spp.) 3

Tarsi normal. Other characters not as above. (Ataenius spp.) 5

3(2). Male anterior spur long, hooked or contorted, fore tibiae with one or two teeth,

metasternal patch of setigerous punctures not conspicuous or nonexistent 4

Male with normal straight spur, tibiae with normal three teeth, a strong, conspicuous

metasternal patch of setigerous punctures; female clypeus finely transversely wrinkled

anteriorly only. (Florida, Louisiana, Pennsylvania)

2. Pseudataenius waltherhorni Balthasar

4(3). Male anterior spur long, parallel, hooked apically, two teeth on anterior tibia, posterior

pronotal angles not emarginate; female clypeus strongly, transversely wrinkled

throughout, pronotal punctures strong. (Louisiana, Texas to Nebraska)

3. P. socialis (Horn)

Male anterior spur long, twisted, widened anteriorly and bent inward, tibia with

apical tooth only, metasternal setigerous punctures few or none, posterior pronotal

angles very slightly emarginate; female clypeus not or sometimes weakly wrinkled

on disc, pronotal punctures moderate. (Southeastern states)

4. P. contortus, new species

5(2). "Pygidium smooth, polished, convex (a few moderate punctures in Ataenius edistoi,

new species; some scabrous punctate rugosity in A. rugopygus, new species); integuments strongly shining; femora, metasternum, and abdominal sterna impunctate 6

Pygidium eroded, alutaceous, concave, or at least closely scabrously punctate basally .1 1

6(5). Clypeus broadly rounded each side of shallow median emargination, without trace of

clypeal denticles; tip of hind tibia rather suddenly expanded; species broader than

others in figurator complex 7
NUMBER 154

Clypeus with dypeal teeth, or at least slight but discernible angulations if broadly

rounded each side 8

7(6). Pygidium with a few shallow, moderate punctures; strong, noticeably mixed pronotal

punctures, close and evenly distributed throughout. (South Carolina)

5. Ataenius edistoi, new species

Pygidium polished, only inconspicuous, fine, scattered punctures; pronotal punctures

very moderate and widely scattered. (Georgia, South Carolina, North Carolina)

6. A. saxatilis Cartwright

8(6). Clypeus strongly dentate or angulate 9

Clypeus broadly rounded each side of shallow emargination with very weak to scarcely

noticeable angulations. (Eastern states west to New Mexico, Texas, and Oklahoma)

7. A. figurator Harold

9(8). Very elongate, parallel, reddish, ratio width to length, 0.355:1.00, parallel-sided; posterior

pronotal angles obliterated, very broadly rounded from sides into base; pronotal

punctures few, scattered, almost completely lacking in anterior discal area and in

posterior angles. (Arizona) 8. A. parkeri, new species

Nearly black, ratio width to length, 0.383:1.00; pronotal punctures numerous 10

10(9). Pygidium scabrous-punctate at base; pronotal punctures numerous, close, moderately

coarse; head punctures, close, moderate, extending down into rugosity of dypeus,

the usual intervening band of fine punctures almost completely missing. (New

Mexico, Arizona, Texas) 9. A. rugopygus, new species

Pygidium smooth, polished but very finely punctate; pronotal punctures numerous,

very moderate in size; frontal band of fine punctures between basal coarse band

and clypeal rugosity. (Kansas, Arizona) 10. A. duncani, new species

11(5). Elytra subopaque, opaque, argillaceous or pubescent (short and inconspicuous in

A. confertus Fall) 12

Elytra shining (alutaceous in A. wenzelii Horn) 23

12(11). Intervals of elytra convex and alternately higher, at least on apical declivity 13

Elytral intervals usually flat or weakly convex, not alternately higher over apical

fifth 14

13(12). Clypeal and frontal punctures moderately coarse, elongate-oval; pronotum moderately

coarsely and uniformly punctate; distinctly opaque; elytral intervals alternately

higher even on disc and apex. (Southeastern states, North Carolina to Texas)

II. A. alternatus Melsheimer

Clypeal punctures very fine, round; punctures of pronotum mixed, coarse and fine;

subopaque; elytral intervals alternately higher only on apical fifth; first segment of

posterior tarsus nearly twice as long as long spur. (New Jersey to Florida to Mississippi) 12. A. insculptus Horn

14(12). Alutaceous or argillaceous species 15

Pubescent, weakly shining species 18

15(14). Elytra elongate, twice as long as wide; intervals flat with row of short coarse setae.

(Canada and eastern United States to South Dakota and Texas)

13. A. imbricatus Melsheimer

Elytra shorter, intervals weakly to strongly convex, setae frequently inconspicuous 16

16(15). Elytral intervals weakly convex, partly to completely argillaceous; striae usually in part

quite wide and shiny. (Florida Keys) II. A. superficial, new species

Elytral intervals subcarinately or tectiformly convex; one-third longer than wide; striae

normal, not especially shining between fine punctures; without argillaceous coating 17

17(16). Basal punctures of pronotum only slightly larger than in anterior median area; elytral

intervals subcarinate, the ridge usually rounded and not shining. (Illinois and

coastal states from New York to Texas) 15. A. miamii Cartwright

Basal punctures crowded and twice the size of those in anterior median area; elytral

intervals strongly tectiform with ridges shining. (Florida)

16. A. havanensis Balthasar

18(14). Pubescence long and fine 19

Pubescence short and usually inconspicuous 20

19(18). Pronotum more or less uniformly punctate, the punctures somewhat finer in front.

(Arizona, Texas) 17. A. semipilosus Van Dyke
SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Pronotal punctures mixed, fine and very coarse. (Kansas, Texas to Arizona)

18. A. hirsutus Horn

20(18). Pronotal punctures closely spaced and more or less uniform in size 21

Pronotal punctures distinctly of two sizes, mixed coarse and fine; elytral intervals

weakly convex, appearance smooth but very finely, not closely punctate. (Texas,

Arizona) 19. A. pseudohirsutus, new species

21(20). Pronotum coarsely, closely punctate; elytral intervals subcarinate; clypeus not distinctly dentate. (Arizona) 20. A. sabinoi, new species

Pronotum densely, moderately punctate; clypeus dentate 22

22(21). Elytral intervals with median row of tubercles with alutaceous sculpture along each

side. (California) 21. A. vandykei, new species

Elytral intervals convex with row of close, quite coarse punctures along outside edge.

(New Mexico, Arizona) 22. A. confertus Fall

23(11). Margins of elytra noticeably fimbriate 24

Margins of elytra not noticeably fimbriate 25

24(23). Pronotum evenly moderately punctate; posterior femoral line deep and entire. (Florida)

23. A. saramari Cartwright

Larger pronotal punctures unevenly distributed, largely lacking medioanteriorly;

posterior femoral line short or absent. (Texas) 24. A. convexus Robinson

25(23). Base of pronotum noticeably lobed; abdominal sterna nearly smooth; posterior tibia

with strong heavy accessory spine; large species (5.5 mm). (Arizona and California) ....

25. A. lobatus Horn

Base of pronotum not noticeably lobed 26

26(25). Clypeal margin distinctly denticulate or strongly angulate each side of median emargination 27

Clypeal margin broadly rounded each side of median emargination, sometimes very

weakly subdentate 42

27(26). Marginal line of posterior femur deep and entire 28

Marginal line short or absent, or weakly impressed if entire 30

28(27). Pronotum with intermixed fine punctures, the coarse punctures less dense anteriorly

at middle 29

Pronotum densely punctate base to apex without intermixed fine punctures; elytral

intervals frequently with traces of a groove each side along the striae. (Eastern

states) 26. A. cylindrus Horn

29(28). Pronotum densely, uniformly punctate over outer third; elytral intervals subcarinate

over posterior third, the intervals strongly eroded each side. (Oklahoma, Arkansas,

Texas) 27. A. oklahomensis Brown

Pronotal punctures less dense, mixed, over outer third; elytral intervals convex over

apical fourth. (Southeastern states) 28. A. ovatulus Horn

30(27). Posterior marginal femoral line weakly impressed; color ferruginous; pronotum

coarsely, sparsely, irregularly punctate with fine punctures intermixed; abdomen

with very few punctures. (Southwestern states) 29. A. desertus Horn

Posterior marginal line short or absent 31

31(30). Pronotal punctures dense, more or less uniform in size 32

Pronotal punctures mixed, disc with widely scattered, moderate to coarse punctures

and intermixed, more closely spaced, fine punctures; abdominal sterna each side with

three or four long semierect hairs. (Florida, Alabama) 30. A. languidus Schmidt

32(31). Clypeal punctures dense, elongate especially laterally, elytral intervals convexly higher

along exterior margin, inner side flatter and alutaceous. (Arizona, Texas)

31. A. barberi, new species

Clypeal punctures round, not elongate S3

33(32). First segment of posterior tarsus noticeably narrowed from middle to base and shorter

than long spur. (Texas to California) 32. A. puncticollis (LeConte)

First segment usually as long or longer than long spur, if not, then parallel-sided

or gradually tapering from base to apex S4

34(33). Small shining species, 3.6 mm long, or less, lateral intervals noticeably and usually

roughly punctate, outside rows of punctures on intervals 7 and 8 very close, separated

by their diameter or less 35
NUMBER 154

Usually larger, frequently alutaceous, not roughly punctate; outside rows of punctures

on intervals 7 and 8 usually separated by three or more times their diameters 36

35(34). Punctures of front and upper dypeus uniform in size. (Arizona)

33. A. nunenmacheri, new species

Punctures of front larger than on upper clypeus, appearing as a band of coarser

punctures. (Florida) 34. A. stroheckeri, new species

36(34). Suture between 4th and 5th abdominal sterna deep, moderately wide, with edges

parallel and extending completely from side to side; averaging about 3.7 mm in

length. (Kansas, Oklahoma, Texas) 35. A. texanus Harold

Suture between 4th and 5th abdominal sterna not as wide at sides as at middle 37

37(36). Smooth, shining species 38

Surface usually alutaceous or microreticulate 41

38(37). Rugose sculpture of clypeus extending up over middle convexity; average size about

4 mm. (Maryland, Virginia) 36. A. glaseri, new species

Rugose sculpture of clypeus rarely to middle of the convexity 39

39(38). Punctures of upper clypeus and frontal area minute, very fine, or absent 40

Punctures of upper clypeus and frontal area dense, fine to moderate, same size as those

of anterior pronotum. (Generally distributed except southeastern states)

37. A. punctifrons, new species

40(39). Punctures of anterior angles and lateral fovea of pronotum noticeably larger and

closer than elsewhere; elytral intervals convex. (Utah)

38. A. utahensis, new species

Punctures of pronotum more or less uniform in size and distribution; elytral intervals

only moderately convex. (Western and southwestern states)

39. A. hesperius, new species

41(37). Length 35 mm, basal punctures of head shading in size into those of clypeus, basal

band of punctures rarely distinct; clypeus distinctly punctate at middle, dypeal

rugae moderate. (Eastern states) 40. A. abditus Haldeman

Length 3.0 mm or less; basal band of closer, larger punctures distinct; clypeus relatively smooth at middle, clypeal rugae fine. (South Carolina to Florida to Mississippi) 41. A. exiguus Brown

42(26). Pronotum usually short, hardly more than one-third as long as elytra; anterior femur

thin, oblong, with fine marginal groove; posterior femur slender. (Squirrel nests,

Florida) 42. A. sciurus, new species

Pronotum not unusually short, almost one-half as long as elytra 43

43(42). Punctures of head united in short longitudinal lines; small, slender, elongate species;

elytral intervals strongly convex 44

Head punctures simple 45

44(43). Middle femur with strong complete marginal line; elytral intervals almost carinate.

(South Dakota to Texas and east to Atlantic coast) 43. A. gracilis (Melsheimer)

Middle femur with short, abbreviated marginal line; elytral intervals evenly rounded.

(California, Arizona) 14. A. noctumus (Nomura)

45(43). Large species, 5.3-6.4 mm; head and pronotum rather coarsely punctate; elytral striae

strong, moderately wide, quite corasely, deeply punctate; elytral intervals cariniformly

convex; posterior pronotal angles slightly emarginate 46

Size usually smaller (A. stephani, 4.8-5.8 mm), elytral characters different 47

46(45). Head and pronotum closely, evenly punctate; a row of close moderate punctures each

side of the median convex carina of the elytral intervals. (Arizona, California)

45. A. sculptor Harold

Head with coarse punctures basally and extending downward as a patch each side

on upper clypeus, clypeus weakly, transversly wrinkled anteriorly; median, smooth,

strongly convex carina of intervals bordered each side by a fine groove which

becomes minutely, noticeably alutaceous over apical declivity. (Florida)

46. A. woodruffi, new species

47(45). Elytral intervals flat, densely punctate, the punctures nearly as coarse as those of the

pronotum. (North-central states) 17. A. robustus Horn

Intervals usually at least weakly convex; rarely noticeably punctate 48

48(47). Clypeus strongly rugose-granulate; posterior femora nearly half as wide as long and

without marginal line. (Southeastern states) 48. A. simulator Harold
10 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Clypeus sometimes weakly transversely wrinkled but not strongly so 49

49(48). Accessory spine of middle and hind tibiae closely adjacent to the shorter spur, without

intervening setae of the terminal fringe 50

Accessory spine more removed from the spurs, one of the setae of the terminal fringe

intervening 51

50(49). Abdominal sterna finely punctate at middle; posterior tibial fringe of ten or more

setae; large species, length 4.5-5.8 mm. (South Carolina, Georgia, Florida)

49. A. erratus Fall

Abdominal sterna coarsely punctate at middle; metasternum with an irregular series

of coarse punctures extending inward from sides to the central flattened area; posterior tibia with fringe of five setae, accessory spine strongly developed; 4.5 mm or

less. (Texas) 50. A. inquisitus Horn

51(49). Base of head with fine or mixed fine and moderate scattered punctures 52

Base of head with transverse band of coarse punctures 56

52(51). Head smooth, with punctures all very fine, uniformly distributed throughout; small

suboval species 3.5 mm in length. (Texas) 51. A. griffini, new species

Head transversely wrinkled anteriorly 53

53(52). Pronotal punctures close, mixed throughout, quite uniformly distributed but slightly

closer in anterior and posterior angles and all finer at middle; posterior angles very

slightly emarginate; accessory spine very short, one-half length of fringe; posterior

femoral line best seen from rear; extreme lateral interval wider than usual and with

row of shiny granules on alutaceous flat base; occipital punctures very fine. (Louisiana) 52. A. aequalh Harold

Not as above 54

54(53). Base of head with mixed coarse and fine punctures; coarse pronotal punctures well

separated, usually by one and one-half to two times their diameter, evenly distributed

including anterior median area; abdominal sterna strongly punctate laterally, the

median smooth area relatively narrower than in A. platensis; metasternal triangle deep,

alutaceous; tip of anterior spur hooked downward in male. (Florida, Texas)

53. A. integer Harold

Base of head with fine or very moderate punctures; coarse pronotal punctures absent

or very few in anterior median area 55

55(54). Robust species, 4.8-5.8 mm in length; anterior femur smooth, very minutely punctate;

middle and posterior femora without or rarely with traces of a marginal line. (Arizona) 54. A. stephani, new species

Slender species, about 4.2 mm in length; anterior femora with scattered, fine-to-moderate

punctures; middle and hind femora with distinct marginal line at knee; tip of anterior

spur bent downward in male. (Texas and Oklahoma eastward)

55. A. platensis (Blanchard)

56(51). Ninth elytral interval finely, closely punctate; sides of pronotum crenate anteriorly;

posterior tibial fringe invariably of four setae; anterior femur with a few coarse

punctures at elbow. (South Carolina to Texas) 56. A. picinus Harold

Ninth interval not differing from others 57

57(56). Posterior angles of pronotum sinuate-emarginate; clypeus smooth, polished, strongly

convex; pronotal punctures moderate, well-separated everywhere; elytral intervals

eroded and alutaceous each side over apical fifth. (Florida, Mississippi, Texas)

57. A. brevicollis Wollaston

Posterior angles obtusely rounded 58

58(57). Metasternum with a small group of coarse punctures each side of median line close

behind middle coxae; humerus and lateral elytral intervals coarsely roughly punctate.

(South Carolina, Florida) 58. A. rhyticephalus (Chevrolat)

Humeri not coarsely punctate 59

59(58). Elytra relatively short and convex, one-third longer than wide, sides distinctly arcuate;

tenth elytral interval finely alutaceous, flat or slightly convex, not as convex as ninth;

median metasternal line shorter than first two visible abdominal sterna at middle;

length 3.5-4.3 mm. (Appalachian region) 59. A. brevis Fall

Elytra more oblong-elongate, one-half longer than wide 60

60(59). Posterior face of profemur sparsely finely punctate and relatively smooth, rarely three

or four shallow coarse punctures 61
NUMBER 154 11

Posterior face of profemur coarsely, often roughly punctate 65

61(60). Coarse punctures of pronotum generally distributed but everywhere sparse and very

little closer laterally; strong posterior femoral line one-half distance from knee to

trochanter; usually five setae in posterior tibial fringe. (All but seven states)

60. A. spretulus (Haldeman)

Coarse punctures of pronotum everywhere numerous, including anteromedial area ... 62

62(61). Elytral intervals usually flat, alutaceous on disc; male anterior spurs incurved at tip;

posterior angles of pronotum very broadly rounded. (Coastal areas, Pennsylvania

to Texas) 61. A. wenzetii Horn

Elytral intervals rarely alutaceous 63

63(62). Posterior femoral line absent or with a very short line at knee; abdominal sterna punctate at middle; male anterior spur not incurved at tip; length 4.0-5.8 mm. (Kansas,

Oklahoma, Louisiana to California) 62. A. cognatus (LeConte)

Posterior femoral line weak but plainly visible from behind, at least one-third distance

from knee to trochanter; anterior tibial spur of male incurved at tip 64

64(63). Small, narrow species, length 3.5 mm. (Florida) 63. A. rudeUus Fall

Coarse punctures of pronotum relatively much larger, abdominal sterna nearly smooth

at middle; length 4.0-4.7 mm. (California, Arizona, Utah)

64. A. califomicus Horn

65(60). Clypeus with noticeable transverse rugulae; posterior tibia with fringe of four or five

setae; usually at least a few coarse punctures coalescing in anterior angles of pronotum.

(More northern distribution; all except far western states) 65. A. strigatus (Say)

Clypeus finely punctate, transverse rugulae absent or very weakly developed; posterior

tibial fringe of six to eight setae. (More southern distribution) 66

66(65). Apical declivity of elytra with intervals eroded each side; posterior femora with row

of three or four noticeable, coarse setigerous punctures at knee. (Eastern states)

66. A. apicalis Hinton

Elytral intervals normal on apical declivity; posterior femora without coarse setigerous

punctures at knee. (Wisconsin and Texas to east coast) .... 67. A. fattigi Cartwright

1. Aphotaenius carolinus (Van Dyke)

Ataenius carolinus Van Dyke, 1928:157.

Aphodius carolinus.—Hinton, 1937b: 196.

Aphotaenius carolinus.—Cartwright, 1952:182; 1958:134; 1963:

49.

DESCRIPTION.—Length 2.5 to 3.1 mm; width 0.95

to 1.3 mm. Piceous black, shining, head anteriorly

and legs reddish, antennae and palpi testaceous.

Head three-fourths as wide as pronotum, strongly

convex, basally with a band of coarse punctures,

front finely punctate, anterior smooth, impunctate;

clypeus with finely refiexed margin, bidentate,

teeth strongly developed, acutely pointed and

widely separated, slightly emarginate between teeth,

margin flattened and dorsally angulately widened,

this appearing as an angulate carina from directly

above, the extreme ventral margin, invisible from

above, with a small median angulation directed

in the opposite direction. Pronotum convex, margined basally and laterally, surface with mixed

coarse and very fine punctures, coarse punctures

uniformly distributed, separated by less than one

diameter to two diameters. Elytra convex, coarsely

striate, striae strongly crenate punctate, intervals

moderately convex, minutely punctate. Covered

basal portion of pygidium deeply grooved under

tips of elytra, exposed portion with depressed

eroded area divided by a longitudinal carina.

Posterior prosternal spine strongly developed, laterally compressed. Mesosternum closely, moderately punctate. Metasternum quite closely coarsely

punctate, median longitudinal line deep. Second

abdominal sternum closely, shallowly setigerously

punctate along anterior margin, carinate between

the coxae; remaining sterna smooth, coarsely, deeply fluted in front. Posterior femoral line obsolete,

only faintly indicated, middle femoral line and

anterior ventral line of profemur wide, deep, and

noticeably alutaceous. Anterior tibiae tridentate

externally. Middle and posterior tibiae with oblique carinae as in Aphodius, without fringe of

spicules apically but with two well-separated triangular teeth, each tooth with a fine hairlike seta

basally on each side, the outer apical angles prolonged, spinelike as in Ataenius, long spur, first

tarsal segment, and three following segments combined, equal in length. Terminal tarsal segment
12 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

about as long as two preceding segments combined,

claws minute.

HOLOTYPE.—California Academy of Sciences,

No. 2549.

TYPE-LOCALITY.—Black Mountains, North Carolina.

SPECIMENS EXAMINED.—109.

DATES COLLECTED.—April 29-September 10.

DISTRIBUTION (Figure 2).—Florida: Caverns State

Park (Jackson County), Key West. Georgia: Pine

Mtn. (Rabun County). Indiana: Crawford County.

Maryland: Marlboro. Ohio: Cincinnati. North

Carolina: Black Mts., Pisgah Forest. South Carolina: Eastatoe River (Pickens County), I'On

Swamp (7 mi N of Awendaw, 15 mi NE of Charleston), Sassafras Mtn. Virginia: A. P. Hill Military

Reservation (Caroline County), Duthet State Park

(Bath County), Jefferson National Forest (Botetourt County), 5 mi S of Paris.

REMARKS.—In Aphotaenius the apical fringe of

setae of the hind tibiae found in Ataenius is replaced by two triangular teeth, each bearing a very

fine seta on each side, and the middle and hind

tibiae have distinct oblique carinae as in Aphodius

(Figure 1/). In all other characters Aphotaenius

agrees with Ataenius. See original description of

the genus for details.

Aphotaenius carolinus is a forest species, most

frequently found in droppings of deer; however,

it has been collected in cow dung and dog excrement in deep woods. Adults are frequently found

under old deer dung of the previous year. Jerath

(1960:68) described the larva.

2. Pseudataenius waltherhorni (Balthasar),

new combination

Ataenius waltherhorni Balthasar, 1938:55.—Cartwright, 1968:

27.

DESCRIPTION.—Length 3.7 to 5:0 mm; width 1.5

to 2.0 mm.

Males: Elongate-oblong, shining, dark castaneous. Head wide, weakly convex, finely reflexed

clypeal margin broadly rounded each side of wide,

shallow, median emargination, sides weakly arcuate

to angle of genae, prominent genae sharply rounded, right-angled, with three or four stiff, moderate

setae at angle; surface punctures of head very fine,

close throughout but a trifle less so at middle of

disc; eyes large and not completely hidden with

head bent down. Pronotum weakly convex, approximately three-fourths as long as wide, sides

strongly arcuate from the widely rounded anterior

angle to base with the posterior angles feebly

emarginate, base slightly sinuate, edge fimbriatecrenate, the setae quite long and conspicuous,

longest at anterior angles, separated by half their

length or less, crenations weak; surface smooth

with extremely minute alutaceous sculpture and

close minute punctures throughout, laterally with

close, very moderate punctures which decrease in

size toward disc and base, larger punctures separated generally by their own diameters more or

less. Elytra convex, subparallel, about three-fourths

as wide as long, humeri finely dentate, elytral

striae fine, moderately deep, very fine strial punctures slightly crenating inner margin of the evenly

convex intervals, lateral intervals not different,

apparently impunctate. Mesosternum shagreened

as usual, without carina between the coxae. Metasternum shining, with a long, strong midline

ending anteriorly in a deep pore, anterior disc

each side with a large patch of dense, setigerous,

moderate punctures, a few punctures trailing posteriorly, smooth toward sides which show noticeable alutaceous sculpture and a small scabrous

area at extreme edge, metasternal triangle moderately deep, finely alutaceous within. First visible

abdominal sternum with fine, posterior marginal

line. Remaining sterna finely fluted along anterior

margin, surface finely alutaceous, with scattered,

very fine punctures from side to side and a cluster

of very moderate punctures at extreme sides.

Fourth abdominal sternum at middle about twothirds as long as preceding sternum. Pygidium

with a shining convex apical lip much longer at

middle, about one-fourth the length of the eroded

disc of the pygidium. Anterior femora with perimarginal line, disc smooth and shining, a few

vague, scattered, very moderate punctures; fore

tibiae normal with three sharp, triangular teeth,

tarsus long, the first tarsal segment longer than

second, terminal segment as long as preceding two

segments combined. Middle and hind femora

smooth and shining, with scattered, very minute

punctures, without trace of posterior marginal

line. Apical fringe of posterior tibia of five setae,

a very short triangular accessory spine, and an intervening seta between spine and spurs, the middle

two setae much shorter than those on each side.
NUMBER 154 13

FIGURE 2.—Distribution of Pseudataenius socialis (Horn), Ataenius duncani, new species,

Aphotaenius carolinus (Van Dyke), and Ataenius edistoi, new species.

o socialis -k duncani • carolinus O edistoi

Tarsi of middle and hind legs long and slender,

posterior tarsus about three-tenths longer than

tibia, metatarsus equal to long spur and to following three segments combined, terminal segment as

long as preceding two segments combined.

Females: Compared to males, usually darker in

color with head and pronotum more convex, the

clypeus is more deeply emarginate, the genae are

more rounded and less prominent, the clypeus is

distinctly transversely wrinkled anteriorly and

there is an occipital band of close, moderate punctures. Females lack the patch of moderate setigerous punctures on the metasternum, the 4 th abdominal sternum is longer, and the pygidium is

much shorter.

HOLOTYPE.—In Deutsches Entomologisches Institut.

TYPE-LOCALITY.—Havana, Cuba.

SPECIMENS EXAMINED.—Four from United States.

(55 from Cuba.)

DATES COLLECTED.—May to August.

DISTRIBUTION (Figure 3).—Florida: Everglade,

May 1912, Wm. T. Davis Coll. (Purdue University); Key West, July-August 1960, R. E. Woodruff Coll. Louisiana: "N. Amerik" (USNM). Pennsylvania: Swarthmore, Delaware County, 6 June

1940, Mark Robinson (USNM).

REMARKS.—This species is somewhat intermediate between Ataenius and Pseudataenius but I

believe it should be placed in the latter genus because it resembles, and agrees in so many characters with, the two other species, P. socialis (Horn)

and P. contortus, new species. The sexual dimorphism, the very weakly convex head and pronotum

of the male, the strongly arcuate, conspicuously

fimbriate sides of the male pronotum, the long

slender tarsi, and large eyes are all more or less

foreign to the genus Ataenius.

Males of P. wait herhorni differ from those of

P. socialis and P. contortus in having fore tibiae
14 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 3. Distribution of Pseudataenius waltherhorni (Balthasar), P. contortus, new species,

Ataenius parkeri, new species, A. brevicollis (Wollaston), and A. integer Harold. (Letter "s"

following symbol represents state label only.)

•k waltherhorni • contortus o parkeri D brevicollis A integer

with the normal three large teeth and normal anterior spur, the genae not as strongly protruding

laterally, the head a little longer, pronotal punctures coarser laterally, tarsi not quite as long, and

a conspicuous metasternal patch of moderate,

setigerous punctures. Females have fine, transverse,

anterior wrinkles, a condition intermediate between P. socialis and P. contortus, and the pronotal

punctures are finer with less disparity in size between the fine and moderate punctures than in the

other species.

3. Pseudataenius socialis (Horn)

Ataenius socialis Horn, 1871:287; 1887:76—Harold, 1874b:174.

Pseudataenius socialis.—Brown, 1927:290.

DESCRIPTION.—Length 4.2 to 5.0 mm; width 1.8

to 2.0 mm. Elongate-oblong, castaneous, shining.

Males: Head short, broad, flat, only very weakly

convex, wider through the prominent genae than

through anterior angles of the pronotum; finely

reflexed clypeal margin broadly rounded each side

of shallow median emargination, sides nearly

straight to sharply rounded, less than right-angled

genae, the genae with a tuft of six to eight, close,

moderately long, stiff setae; head surface uniformly,

very finely punctate, the punctures separated by

about twice their diameters. Pronotum two-thirds

as long as wide, sides and base finely margined,

fimbriate with long, conspicuous setae, the setae

longest at anterior angles where they are separated

by about one-third their length and gradually

shorter to beyond posterior angles; sides widely

arcuate into slightly sinuate base, sometimes with

barely a trace of emargination at posterior angles;

surface very moderately convex, with close, mixed,

quite evenly spaced, very fine to very moderate

punctures throughout, a little finer anteriorly at
NUMBER 154 15

middle, the larger punctures separated in general

by one to two or more times their diameters. Elytra

convex, long, subparallel, not quite three-fourths

as wide as long, humeri not dentate, elytral striae

fine and not very deep, strial punctures weakly

crenating sides of the feebly convex intervals,

tenth interval flat, intervals with scattered, minute

punctures more or less in two rows, separated by

about four times their diameters. Mesosternum

shagreened as usual in Ataenius, without noticeable

carina between the coxae. Metasternum with seven

or eight moderate punctures plus scattered, minute

puncture on each side of long, fine, rather shallow

midline, minutely alutaceous with a few close, fine

punctures at sides, metasternal triangle shallow,

very minutely alutaceous within. First visible abdominal sternum with fine posterior marginal line,

second with a trace of a similar line at sides, middle

three sterna with very fine fluting along anterior

margin, sometimes invisible in some specimens,

fluting of 5th sternum only about twice as long,

surface of sterna minutely alutaceous with a few

usually vague, scattered, fine punctures. Pygidium

with wide, smooth apical lip, eroded area deep

and rough. Anterior femora without marginal line,

surface smooth with a few vague shallow fine punctures. Anterior tibiae narrow with only two large

teeth, margin smooth above teeth, spur long, parallel, the tip bent inward. Middle and hind femora

like anterior femora but with row of four, quite

widely spaced, coarse setigerous punctures over

outer half. Posterior tibial apical fringe of eight

close setae, a short accessory spine, and an intervening setae between spine and spurs, the latter

seta not easily seen. Tarsus of middle and hind

legs very long and slender, approximately onethird longer than the tibia; metatarsus longer than

long spur, approximately equal to following three

segments combined.

Females: Compared with the male the head and

pronotum are more convex and much more strongly punctate. Anterior two-thirds of the clypeus

transversely wrinkled, posterior clypeus and front

finely, closely punctate, the punctures separated by

their diameters or a little more. Pronotum with

mixed very fine and moderately coarse punctures

throughout, the coarse punctures irregularly spaced

and a little finer anteriorly at middle, separated

generally by less than one to two or three times

their diameter. The 4th abdominal sternum is a

little larger and the apical lip of the pygidium is

not as long at middle. The anterior femora have

an anterior marginal line. The anterior tibia has

the normal three large teeth and short straight spur.

LECTOTYPE (present designation).—In Academy

of Natural Sciences of Philadelphia, presently labeled "Type No. 3609."

TYPE-LOCALITY.—"Georgia and Louisiana." The

lectotype is labeled simply "La."

SPECIMENS EXAMINED.—34.

DATES COLLECTED.—May 31 to July 15.

DISTRIBUTION (Figure 2).—Kansas: Lawrence,

Maple Hill, Ottawa, Topeka. Louisiana: Harahan,

Morgan City, Raceland. Nebraska: Lancaster

County, Lincoln. Oklahoma: Noble County (in

Cynomys hole). Texas: Columbus, Houston.

REMARKS.—As indicated in the above descriptions, the sexes are dimorphic in Pseudataenius.

Differences from the genus Ataenius have been

pointed out by Harold (1874b) and Horn (1887).

Horn (1887:77) gives the following translation

of Harold's comments:

The posterior tibiae are without transverse ridges, a character which forbids its association with Aphodius, and allies

it with Ataenius, Saprosites and Euparia. On the middle tibia

there is, however, a transverse ridge, in which it resembles

Saprosites. Saprosites is characterized by the relatively short

tarsi and the denticulate middle tibiae, characters to which

the graceful and slender tibiae and tarsi of A. socialis are

foreign. If, therefore, one does not desire to create a new

genus for every aberrant form our choice of position must

be between Ataenius and Euparia. The short and transverse

head with the prominent genae suggest Euparia; the posterior

tibiae straight and slender, the genae continuous with the

clypeus, not separated by an incisure, give weight to an

association with Ataenius, from which it however differs by

the non carinate mesosternum and remarkable characters

which bespeak for it an isolated position in the genus. . . .

The eyes are larger than usual in the genus and not concealed from the front when the head is deflexed. The maxillary palpi are also longer and the terminal joint slender, not

thicker at the middle as usual in the other species. It will be

observed that the terminal joint is fully twice as long as the

penultimate in the $, the penultimate in the $ is two-thirds

the length of the terminal.

Brown (1927) decided that so many differences

from Ataenius were sufficient to require a new

genus for Horn's socialis and proposed the name

Pseudataenius.

Ataenius socialis was described in 1871 from two

specimens with the distribution listed as Georgia

and Louisiana. The Horn collection now in the

Academy of Natural Sciences of Philadelphia no
16

longer includes a specimen from Georgia. The

Louisiana specimen agrees perfectly with the original description and has been designated as the

lectotype. Horn (1887) stated that the two original

specimens were females and added the description

of the male. The male description is that of the

species occurring in Louisiana, Texas, Kansas, Nebraska, and Oklahoma and the lectotype female

agrees with the female of that species. The Georgia

specimen was very likely the species described below as Pseudataenius contortus, new species.

4. Pseudataenius contortus, new species

PLATE la

DESCRIPTION.—Holotype Male: Length 5.1 mm;

width 2.1 mm. Elongate-oblong, shining, dark

castaneous, antennae testaceous. Head short, broad,

very weakly convex; finely reflexed clypeal margin

broadly rounded each side of shallow median

emargination, sides arcuate to sharply rounded

right-angled genae, genae fimbriate with a close

group of seven or eight moderately long, stiff setae;

surface of head very minutely alutaceous with

rather evenly spaced, minute to very fine punctures,

generally separated by two or three diameters over

middle disc, a trifle finer anteriorly, and a little

closer basally. The genae flaring outward give the

head a broad distinctive appearance. Pronotum

2.0 mm wide, and 1.4 mm long, rather weakly convex, sides strongly arcuate from the widely rounded

anterior angles into the similarly arcuate base,

sides and base finely margined, fimbriate with long,

conspicuous setae which are very slightly longer

at anterior angles, then very gradually decreasing

in length around posterior margin to base, separated at anterior angles by approximately onethird their length; surface very minutely alutaceous

throughout under high magnification, mixed very

fine and fine, quite evenly distributed punctures

throughout except for a narrow, impunctate, longitudinal midline, punctures a trifle smaller anteriorly, and little larger basally and laterally. Elytra

3.2 mm long and 2.1 mm wide, convex, subparallel,

humeri not distinctly dentate, striae fine, not deep,

very fine strial punctures weakly crenating inner

margins of the moderately convex intervals, intervals with a medium row of very minute punctures,

tenth interval flat and a little more strongly alutaSMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

ceous. Mesosternum shagreened with dense fine

punctures and very fine, short, decumbent hair,

not distinctly carinate between the coxae. Shining

metasternum with long midline weakly impressed

at ends and barely traceable at middle, with a very

irregular row of fine-to-moderate close punctures

each side, smooth and shining outward to sides,

a trace of fine, rough sculpture at extreme sides,

the metasternal triangle weakly depressed and

minutely alutaceous within. First visible abdominal

sternum with posterior marginal line, next two

sterna with similar line except at middle, sterna

flattened at middle, very fine fluting along anterior

margin, their surface minutely alutaceous with a

few very fine to fine, scattered, shallow punctures

more noticeable at sides. Fourth abdominal sternum about two-thirds as long as preceding sternum,

5th not quite as long. Apical lip of pygidium at

middle about half as long as 5th sternum, convex,

shining but minutely, densely punctate, eroded area

finely roughened and about four times as long as

the apical lip at middle. Anterior femora without

marginal lines, surface shining, convex, with a few

scattered, shallow, very moderate punctures. Anterior tibiae without lateral teeth, the terminal

tooth elongate, subparallel-sided, and bluntly

rounded; the spur long, gradually widened, and

slightly twisted to anterior third then bent inward

and slightly downward to sharp tip, at widest point

it is at least twice as wide as at base; first tarsal

segment larger than second, terminal segment as

long as three preceding segments combined. Middle

and hind femora minutely alutaceous, a few scattered, shallow, fine punctures and a row of four,

moderate, setigerous, widely spaced punctures over

outer half of femur, without marginal lines. Apical

fringe of posterior tibia of nine fairly long setae,

an accessory spine half as long, and an intervening

seta between the spine and spur; tarsus very long

and slender, the tibia only two-thirds as long;

metatarsus one-fourth longer than long spur, as

long as following three segments combined, terminal segment as long as two preceding segments

combined.

Allotype Female: Length 4.6 mm; width 1.9 mm.

Compared with the male, the clypeus is more

deeply emarginate at middle, the sides are very

slightly incurved or emarginate in outline, the

genae are curved back, not continuing straight to

angle of the genae; the head is more coarsely and
NUMBER 154

closely punctate, the pronotum is more convex,

much more coarsely punctate with close, mixed

punctures showing much greater disparity in size

but with same impunctate midline. The anterior

femora have a perimarginal groove which is weak

posteriorly. The anterior femora are normal with

the usual three sharp, triangular teeth and a long,

straight, slender spur. The middle femora have

a shallow but complete posterior marginal line.

The posterior femora have a slightly deeper posterior marginal line along the outer two-thirds.

The abdominal sterna are convex from side to

side with the 4th sternum comparatively longer.

The pygidium is shorter, with a thin, shiny apical

marginal lip.

HOLOTYPE.—USNM 71732.

TYPE-LOCALITY.—Florida, 17 miles north of

Tallahassee, Tall Timbers Research Station, at

light, 25 June to 4 July, 1967, L. Collins. Holotype,

allotype, and 27 paratypes with same data.

SPECIMENS EXAMINED.—372.

DATES COLLECTED.—June 1 to July 23.

DISTRIBUTION (Figure 3).—Paratypes. Alabama

(1): Daphne, 12 June. fDelaware (1): Delaware

Bay, "14 foot Bank, L.H.," 17 July 1936. Florida

(321): Monticello (199), black light, 12 June

1969, W. H. Whitcomb. Tallahassee (4), 29 June

1965, W. Suter. Tall Timbers Research Station,

Leon County (118), black light, 1-8 June 1967,

L. Collins. Georgia (20): Beachton, Birdsong Plantation, 4-7 July 1967, E. V. Komarek. Louisiana

(11): Baton Rouge (2), June 1905, A. W. Merrill.

New Orleans (1), 13 June, H. Soltau Coll.

(USNM). Patterson, St. Mary Parish (4), 11 June

1959, W. Suter. Pearl River (4), 6 June 1893, H.

Soltau Coll. (USNM). Mississippi (2): "Southern

Mississippi" (1), 11 June 1893, H. Soltau Coll.

Utica (1), trap light, 21 July 1964. New Jersey

(1): "New Jersey," no date, J. B. Smith. South

Carolina (11): Blackville, Edisto Exp. Sta. (2),

trap light, 9 July 1938, O. L. Cartwright. Charleston (1), 15 June 1930, O. L. Cartwright. Hendersonville, Colleton County (2), 23 July 1936, M.

Robinson. Summerville (1), 9 July 1936, O. L.

Cartwright. Swansea (1), F. Knab. Yemassee (4),

3 June 1939, 6 June 1947, O. L. Cartwright. Virginia (3): Arlington (1), 20 July 1949. Nelson

County (2), 30 June 1911, 3 July 1916, W. Robinson.

REMARKS.—The specimens vary in length from

17

4.0 to 5.1 mm and in width from 1.7 to 2.1 mm.

Frequently a male will show a suspicion of a second tooth opposite the base of the spur on the

anterior tibia. Sometimes the longitudinal, impunctate midline of the pronotum will be reduced,

but usually at least a trace will remain.

Males of this species are easily separated from

those of P. socialis (Horn) by the shape of the

anterior spur and lack of a well-developed second

tooth of the anterior tibiae. Females of P. contortus usually are without—or with very feeble—

transverse clypeal wrinkles and are comparatively

less strongly punctate over the pronotum. The

transverse clypeal wrinkles are conspicuous and

the pronotal punctures show greater disparity in

P. socialis.

5. Ataenius edistoi, new species

DESCRIPTION.—Holotype Female: Length 3.9 mm;

width 1.7 mm. Elongate-oblong, parallel, shining,

polished, black with anterior margin of clypeus, anterior margin of pronotum, and legs reddish. Head

convex. Finely reflexed margin of clypeus broadly

rounded each side of a wide, shallow, median

emargination, sides feebly arcuate to obtusely

rounded, nearly right-angled genae; surface of clypeus transversely wrinkled over anterior half,

upper half closely finely punctate gradually to a

narrow transverse band of very fine punctures just

in front of the coarser punctures of the frontal

and basal areas, the latter generally separated by

their diameters or a little less. Pronotum 1.5 mm

wide and 1.1 mm long, quadrate with sides nearly

straight and parallel, convex, anterior angles quite

sharply rounded, posterior angles very broadly

rounded, from sides with base, sides and base finely

margined, not crenate, without marginal setae,

surface with evenly distributed, close, mixed very

fine and moderate punctures, the moderate punctures a trifle smaller anteriorly and more numerous

in the anterior angles, generally separated more or

less by about their diameters, very few close to posterior margin. Elytra 2.5 mm long and 1.7 mm wide,

nearly parallel-sided, humeri finely dentate, striae

moderately crenate-punctate, intervals nearly flat,

with minute scattered punctures, lateral intervals

not different. Mesosternum shagreened as usual,

carinate between the coxae. Metasternum smooth,

shining, with rather close, scattered, very minute
18 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

punctures, midline long, not deeply impressed,

vaguely microreticulate outward to sides, metasternal triangle similarly sculptured, not deeply impressed. Abdominal sterna convex, smooth, shining, with scattered, very fine punctures at middle,

some very moderate punctures and a vaguely uneven surface at extreme sides, first visible sternum

with very fine posterior marginal line, the following sterna very finely fluted along anterior margin,

middle three sterna subequal in length, 5th sternum about three-fourths as long. Pygidium smooth,

shining, with rather close, unevenly spaced, fine

punctures mostly over basal half. Anterior femora

with perimarginal groove, surface shining, with

scattered, very fine punctures. Middle and hind

femora smooth, polished, with minute, scattered

punctures, without posterior marginal line. Posterior apical tibial fringe of seven setae, without

accessory spine. First posterior tarsal segment

slightly longer than long spur and slightly longer

than following three segments combined.

Allotype Male: Length 3.5 mm; width 1.6 mm.

Dissected and broken. The only differences

noted between the holotype and allotype are that

the latter has a longer, narrow pygidium with

several close coarse punctures along the basal margin and a much shorter 5th abdominal sternum.

HOLOTYPE.—USNM 71733.

TYPE-LOCALITY.—South Carolina: Colleton

County, 5 mi E of Canadys, State Highway 61,

along Edisto River, 19-22 May 1968, O. L. Cartwright.

SPECIMENS EXAMINED.—Seven.

DATES COLLECTED.—May 19 to June 7.

DISTRIBUTION (Figure 2).—Allotype and four paratypes (three completely dissected) collected with

the holotype. One paratype, South Carolina, Colleton County, 3 mi SW of Williams near junction

of State Highways 64 and 645, 7 June 1945, O. L.

Cartwright.

REMARKS.—Ataenius edistoi is another of a considerable group of species closely similar to A.

figurator Harold. All have a black or dark brown,

highly polished surface and a convex noneroded

pygidium, although a few show some punctures or

slightly roughened surface. Ataenius edistoi is

slightly broader than A. figurator and not quite

as broad as A. saxatilis. It is recognized by the

punctate pygidium.

All of the specimens were collected under surface litter on sandy but hard ground along the

roadsides. Apparently neither A. edistoi nor A.

saxatilis are attracted to lights, at least under certain conditions, for I have run lights and light

traps at the same time and place they were collected but failed to get either at the lights.

6. Ataenius saxatilis Cartwright

Ataenius saxatilis Cartwright, 1944:29.

DESCRIPTION.—Length 3.5 to 4.6 mm; width 1.6

to 2.1 mm. Oblong, convex, strongly shining,

piceous; sides of pronotum, margin of clypeus,

and legs dark castaneous, antennae pale testaceous.

Head strongly convex, very finely reflexed margins

of clypeus broadly, evenly rounded each side of

rather shallow median emargination, sides weakly

arcuate to genal suture, genae rounded, distinct;

clypeal surface concave close behind median emargination, feebly wrinkled and very finely punctate

over anterior third, very minutely punctate at

middle and base, front with rather wide band of

close, moderate punctures separated by one diameter or twice their diameters. Pronotum about one

and one-half times as wide as long, sides and base

finely margined, without marginal setae, anterior

angles obtuse, posterior angles broadly, evenly

rounded from sides into base, highly polished surface with generally distributed, sparse, irregularly

spaced, moderately coarse punctures separated on

disc by one to four or five diameters, slightly

coarser and closer at sides, and with interspersed,

similarly distributed, minute punctures throughout. Elytra about one and two-thirds as long as

wide, humeri not noticeably dentate, sides not

quite parallel, widest slightly beyond middle;

striae fine, not deep, strial punctures finely crenating the intervals on each side, the intervals almost

flat, highly polished, microscopically punctate, lateral intervals not different. Mesosternum shagreened, with fine sculpture and very fine, short,

appressed hair; finely carinate between the coxae.

Metasternum, abdomen, and legs shining, minutely

punctate. Metastemal midline fine, shallow. The

usual anterior marginal fluting of abdominal sterna

so fine as to be invisible except under high magnification. Pygidium convex, smooth, polished with

a few scattered, very fine punctures. Anterior

femora with weak anterior groove, without pos-
NUMBER 154 19

terior marginal groove. Middle and posterior

femora without posterior marginal groove. Apical

fringe of posterior tibia with nine close, uniform

setae, without accessory spine; long spur, first tarsal

segment, and following three segments combined

all about equal in length. The male has the 4th

and 5th abdominal sterna shortened, 4th sternum

about two-thirds as long as the preceding and the

5th two-thirds as long as the 4th. In the female

the 4th abdominal sternum not shortened, the

pygidium less convex and not as long as in the

male.

HOLOTYPE.—USNM 56942.

TYPE-LOCALITY.—Bogg's Rock, Liberty, South

Carolina.

SPECIMENS EXAMINED.—450.

DATES COLLECTED.—June 14 to September 1.

DISTRIBUTION (Figure 4).—Georgia: Flat Rock

(Flat Rock Creek, 7i/2 mi E of Columbus), Stone

Mtn. North Carolina: Buck's Forest (Transylvania

County), High Falls (Little River, Transylvania

County). South Carolina: Bald Rock (4 mi S of

Caesar's Head), Beverly, Forty Acre Rock (Lancaster County), Haile Gold Mine (Lancaster County), Jefferson, Lancaster, Liberty (Bogg's Rock),

Pinnacle Mtn., Table Rock Mtn.

REMARKS.—Ataenius saxatilis is closely allied to

A. figurator Harold; however, it is a more robust

species and differs in general shape. Ataenius saxatilis increases noticeably in width from head to

slightly beyond the middle of the elytra, whereas

A. figurator is more slender and parallel. The

clypeus is more widely rounded and without even

a suspicion of angulation each side of the median

emargination in A. saxatilis. In A. figurator the

clypeus on each side of the median emargination

is more sharply rounded, usually with an evident

angulation, frequently with a noticeable denticle.

Ataenius saxatilis is found in the sand washed

down to the edges of pockets or islands of soil and

vegetation on outcroppings of bare, weathered

areas of granite or gneissic rock, or in the sand

and soil around the lower edges of such areas of

rock. Jerath (1960:73) described the larva.

7. Ataenius figurator Harold

Ataenius figurator Harold, 1874a:24.—Horn, 1875:142; 1887:

79 Schmidt, 1922:435 Cartwright, 1964:103.

DESCRIPTION.—Length, 3.3 to 4.3 mm; width 1.3

to 1.7 mm. Polished, shining black, elongateparallel, convex, legs and ventral side reddish.

Head moderately convex, clypeus broadly rounded

with only the barest trace or suspicion of an angulation or tooth each side of a broad, shallow, median

emargination, sides nearly straight to rounded

genae, edge finely reflexed; surface finely, transversely wrinkled anteriorly, a narrow, transverse,

relatively smooth, minutely punctate band above

greatest convexity and anterior to a basal band of

close, moderate punctures, irregularly placed but

generally separated by less than their diameters.

Pronotum convex, two-fifths wider than long, anterior angles rather sharply rounded, posterior

angles very broadly rounded, sides and base finely

margined, edge entire without marginal setae; surface with scattered, moderately coarse punctures

generally separated by their diameter or more,

some intermixed, scarcely visible, minute punctures, narrowly impunctate basally and in posterior

angles. Elytra convex, without humeral denticles,

nearly parallel-sided, one-half longer than wide,

nearly two and one-half times as long as pronotum;

striae moderately fine, finely crenate-punctate, intervals weakly convex, not different laterally, surface with irregularly placed, moderately close,

extremely minute punctures. Underside smooth

and shining. Mesosternum weakly carinate between

the coxae. Metasternum with fine, weakly impressed midline; disc with minute, scattered punctures, very slightly roughened at extreme sides and

in the shallow metasternal triangle. Hind coxal

plates similarly roughened. Abdominal sterna

smooth and shining, slightly roughened at extreme

sides, finely fluted along anterior margins. Pygidium

smooth, polished, very minutely punctate, smoothly

convex without trace of eroded surface. Anterior

femora with barely a trace of marginal line anteriorly, none posteriorly. All femora smooth and

shining but with extremely minute, scattered punctures. None with posterior femoral lines. Posterior

tibia without accessory spine, tibial fringe of six

setae. First posterior tarsal segment slightly longer

than long spur and noticeably longer than following three segments combined. In the females the

terminal abdominal sternum is nearly as long as

the penultimate sternum but in the male the terminal sternum is much shorter, only about half as

long as the preceding sternum.
20

SMITHSONIAN CONTRIBUTIONS TO ZOOLOCY

FIGURE 4.—Distribution of Ataenius rugopygus, new species, A. saxatilis Cartwright, A. sabinoi,

new species, and A. insculptus Horn.

* rugopygus • saxatilis D sabinoi o insculptus

LECTOTYPE.—In Museum National d'Histoire

Naturelle.

TYPE-LOCALITY.—Louisiana.

SPECIMENS EXAMINED.—459.

DATES COLLECTED.—May 15 to October 29.

DISTRIBUTION (Figure 5).—Alabama: Auburn,

Dadeville, Florence, Helena, Killen. Arkansas:

Drew County, Hope Experiment Station (Hempstead County), West Memphis, Taylor (Lafayette

County), Tuckerman (Jackson County). District

of Columbia: Washington. Florida: Blountstown,

Tall Timbers Research Station (Leon County).

Georgia: Arlington, Atlanta, Beachton, Cornelia,

Demorest, Tifton. Indiana: Grantsburg, Hovey

Lake. Kansas: Edwards County, Gray County, Hamilton County, Meade County, Medora, Mt. Hope,

Mulvene, Reno County, Sedgewick County, Wallace County, Wichita County, Wyandotte County.

Kentucky: Louisville, St. Mathews. Louisiana:

Alexandria, Algiers, Baton Rouge, Calcasieu, Gueyden, Harahan, Morgan City, New Orleans, Patterson, St. Mary Parish, Sam Houston State Park,

Slidell. Maryland: Beltsville, Breton Bay, College

Park, Glen Burnie, Hebbville, Scotland, Silver

Spring, Upper Marlboro. Mississippi: Grenada,

Hinds County, Jackson, Leflore County, Ludlow,

Utica. Missouri: Sikeston. New Jersey: Cape May.

New Mexico: Bernalillo, Chaves County. North

Carolina: Camp Lejeune, New River (Marine

Corps Air Facility), Raleigh, Swan Quarter. Oklahoma: Broken Bow, Enid, Erick, Lake Texhoma

(near Willis), Noble County, Oklahoma City,

Payne County, Ponca City, Union City, Watts.

Pennsylvania: Philadelphia. South Carolina: Anderson, Blackville, Camden, Charleston, Chester,

Clemson, Columbia, Florence, Gramling, Greenville, Lancaster, Litchfield Beach, Little River

(Salem), Myrtle Beach, Palmetto, Ritter, Seneca,

Summerville, Tigerville, Yemassee, York. Tennessee: Backbone Rock, Burrville, Harrison Bay State
NUMBER 154 21

FIGURE 5 Distribution of Ataenius semipilosus Van Dyke, A. ftgurator Harold, A. vandykei,

new species, and A. convexus Robinson,

o semipilosus • figurator it vandykei • convexus

Park (Hamilton County), Memphis, Pulaski.

Texas: Alice, Anahuac, Beeville, Brownsville, College Station (Brazos County), Columbus, Corpus

Christi, Cotilla, Edna, Elkhart (10 mi SW), Harlingen, Hidalgo County, Houston, Kingsville, Lolita, Moore, Orange, San Diego, Sherman, Sinton,

Victoria, Weslaco, Wharton. Virginia: Arlington,

Chatham, Hampton, Lorton, Norfolk, Petersburg,

Richmond.

REMARKS.—Ataenius figurator is one of a complex

of very similar, closely related species occurring

from the United States south to Argentina. These

species are difficult to define and to separate in

many cases. Several new species are described in

the following pages and there may still be others

included in the distribution given for A. figurator.

8. Ataenius parkeri, new species

DESCRIPTION.—Hololype Male: Length 4.3 mm;

width 1.5 mm. Very elongate, parallel, piceous, anterior margin of pronotum, anterior margin of head,

and legs reddish, strongly shining, polished. Head

convex, a low, sharp, widely based tooth each side of

the wide, shallow, median emargination, finely reflexed sides weakly arcuate to slightly depressed,

rounded genae; clypeal surface narrowly, slightly

concave, smooth around anterior margin, disc

transversely wrinkled, frontal area with a somewhat irregular transverse band of very moderate

punctures separated by their diameters or less,

occiput smoother with fewer punctures. Pronotum

convex, length 1.2 mm, width 1.4 mm, finely margined, edge entire without setae or crenations,

anterior angles narrowly but obtusely rounded,

hind angles obliterated, the arcuate sides smoothly

rounded into base; surface with mixed, very moderate punctures and intermixed, extremely minute

punctures, the moderate punctures are irregularly

scattered over much of the surface but more nu-
22 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

merous about halfway toward the sides, very few

on middle disc and near the margins, noticeably

absent posteriorly around sides and posterior

angles. Elytra long, parallel, length 2.6 mm, width

1.5 mm, humeri very finely dentate, striae fine,

moderately deep, strial punctures as wide as striae,

slightly crenating sides of intervals on each side,

separated by about three times their diameters;

intervals almost flat, only slightly more convex

over apical declivity, lateral intervals not different,

surface shining, polished but with scattered, very

inconspicuous, extremely minute punctures under

high magnification. Mesosternum shagreened with

fine, alutaceous sculpture and fine, short, appressed hair, a very fine, sharp carina between the

coxae. Metasternum smooth, shining, midline fine,

scarcely impressed. Abdominal sterna smooth, polished, anterior margin finely fluted, first two sterna

with a few minute to fine punctures near sides,

4th sternum about half as long as preceding sternum, 5th about three-fourths as long as 4th. Pygidium convex, shining, polished. Anterior femora

without marginal grooves, the anterior edge with

two long setae near trochanter, separated by about

their length, set in a noticeable pore, outer half

of margin flared in a thin, arcuate, almost transparent plate, surface smooth and shining. Middle

and hind femora smooth, shining, without posterior femoral lines. First hind tarsal segment

slightly longer than following three tarsal segments combined, subequal to long spur. Posterior

tibial, apical fringe of seven setae, slightly unequal

in length.

AIIotype Female: Length 4.4 mm; width 1.5 mm.

The greatest difference is in the terminal sterna of

the abdomen, the 4th sternum being nearly as

long as the preceding sternum, the 5th sternum

about three-fourths as long as the 4th and the

pygidium relatively much shorter than in the male.

The allotype has a relatively longer first segment

of the posterior tarsi.

Paratypes vary from 3.5 to 4.4 mm in length

and 1.2 to 1.6 mm in width. Many specimens are

dark red brown but otherwise there seems to be

little variation except in the number of pronotal

punctures, some specimens having relatively very

few.

HOLOTYPE— USNM 71734 (also allotype).

TYPE-LOCALITY.—Douglas, Arizona, at black

light, 10-16 July 1968, J. H. Russell.

SPECIMENS EXAMINED.—362.

DATES COLLECTED.—May 25 to September 30.

DISTRIBUTION (Figure 3).—Paratypes. Arizona

(346): "Arizona" (1), no date, C. Shaeffer Coll.

(USNM). Bear Valley Ranch, Santa Cruz Mts. (3),

black light, 2 August 1910, S. L. Wood, J. B. Karren,

H. B. Shurtleff. Chiricahua Mountains (7): 2 August 1952, 7 August 1957, D. J. and J. N. Knull

(3, OSU); 2 August 1961, L. J. Bottimer (3); 28

July to 7 August 1966, Karl H. Stephan (1). Cochise County (5): Near Portal (1), 28 July to 7

August 1966, K. Stephan; San Bernardino Ranch

(4), no date, 3750 ft, E. G. Smit (3, U. Kans.),

3600 ft, no date, W. Nutting (1, Werner Coll.).

Coyote Mountains (1): 4-7 August 1916 (M. Robinson Coll.). Douglas (121): July-September 1963,

10-16 July 1968, 7, 15 July 1969, 10, 25 August

1969, J. H. Russell (103); 23 August 1952, B.

Malkin and Vet (10); August, F. H. Snow (2);

30 September 1957, B. Benesh (2); 13, 20 September 1957, W. Rosenberg (4). Dragoon Mountains, Cochise Stronghold (2): 11 August 1954,

F. G. Werner (1); 25-27 July 1955, G. D. Butler

and F. G. Werner (1). Huachuca Mountains (3):

Sunnyside Canyon, 8 August 1970, 1 September

1970, K. Stephan (2); no other data (1). Madera

Canyon, Santa Rita Mtn. (1), 31 July 1954, F. G.

Werner. Nogales (39): 23 July 1940, 8 August

1950, 7 August 1952, J. J. and J. N. Knull (3);

7 July 1949, 4 August 1953, 30 July 1957, D. J.

and J. N. Knull (35, OSU); 17 August 1947, F.

H. Parker (1, Howden Coll.). Oracle (1), 4500

ft, 25 July 1917, Wheeler (MCZ). Patagonia (33):

5 July 1936, M. Cazier (1); 10 July 1936, A. T.

McClay Coll. (15); 21 August 1940, F. W. Nunenmacher (3); 11 August 1954, 21 July 1955, 8 August, R. Schmitt (8, Werner Coll.); 2 August 1954

(1); 3 August 1958, R. H. Arnett, Jr. (1); no date,

E. S. Ross (2, Saylor Coll.); 2 August 1953, J. J.

and J. N. Knull (1, OSU). Near Patagonia, Santa

Cruz County (1), no date, R. H. Arnett, Jr. Patagonia Mountains, west slope (2): 4400 ft, 27 July

1949, F. W. Werner and W. Nutting (1); 2 August

1953, D. J. and J. N. Knull (1, OSU). Pena Blanca

(9): black light, 5 August 1964, J. Stibick (7);

21 July 1969, R. H. Arnett (1); no date (Santa

Cruz County), R. H. Arnett, Jr. (1). Pena Blanca

Canyon (13), Pajarito Mountains, black light, 28

July 1970, K. Stephan. Pima County (51): Colossal

Cave Park (11), 4-11 August 1970, K. Stephan;
NUMBER 154 23

Robles Ranch (40), 12 August 1947, Gillogly.

Portal (12): 16 June 1956, Ellen Ordway (9);

flood debris, 2 August 1961, L. J. Bottimer (3).

Ruby (1), 7 August 1952, D. J. and J. N. Knull

Knull (OSU). Safford (4), light trap, 23 June, 1

July 1954, F. G. Werner (Werner Coll.). San

Carlos (1), 27 August 1935, Parker (M. Robinson

Coll.). San Pedro River, Fairbanks (1), 6 September 1927, J. A. Kusche. Santa Catalina Mountains

(6): Bear Canyon, 30 July 1970, K. Stephan (1);

Sabino Canyon, July 1949, D. J. and J. N. Knull

(1, OSU); Sabino Canyon, August 1955, F. G.

Werner and G. D. Butler (3); foothills, 19 August

1970, K. Stephan (1). Sycamore Canyon (2), Santa

Cruz County: 2 August 1958, R. H. Arnett, Jr.

(1); near Ruby, 10 August 1955, F. G. Werner and

G. D. Butler (1). Tucson (23): 21 July, 2 August

1970, K. Stephan (2); at light, 9 August 1928, R.

B. Streets (1, Mank Coll., Cornell Univ.); 20 July,

Hubbard and Schwarz (5); no date, Wickham (6);

no date, H. Soltau Coll. (2, USNM); no date,

Psota Coll. (6, Field Museum); no date, Cartwright

Coll. (1, USNM). Tucson Mountains (1): 1 August 1950, D. J. and J. N. Knull (OSU). Wilcox

(1): 24 July. Wilcox Playa, Cochise County (1),

29 August 1970, K. Stephan. New Mexico (13):

Rodeo (13 mi N), 16 June 1956, H. and A. Howden (Howden Coll.). Texas (1): San Diego, 25

May, Hubbard and Schwarz. Mexico: Sonora (1):

Hermosillo, 19-20 September 1952, B. Malkin.

REMARKS.—In lateral view the pronotum is

evenly rounded into the base (Figure 1&), while

A. duncani is more angulate, posteriorly (Figure

\c).

This species is named in honor of Mr. Frank

H. Parker of Globe, Arizona, a well-known collector of Arizona Coleoptera with whom I have

exchanged specimens since 1932.

9. Ataenius rugopygus, new species

DESCRIPTION.—Holotype Male: Length 4.0 mm;

width 1.7 mm. Elongate, parallel, shining, dark

reddish brown, only moderately convex. Head moderately convex, clypeal edge finely reflexed, sharply

triangularly dentate each side of wide, shallow,

median emargination, sides weakly arcuate to obtusely rounded, right-angled genae; surface finely

but roughly, transversely wrinkled, the wrinkles

broken into short segments, frontal area closely,

moderately punctate, punctures separated by their

diameter or less. Pronotum 1.5 mm wide by 1.0

mm long, anterior angles obtuse, posterior angles

broadly rounded, sides straight, sides and base

finely margined, not fimbriate or crenate; surface

throughout with close, quite evenly distributed,

mixed moderate and minute punctures, the moderate punctures separated by less than one to one or

two times their diameters. Elytra 2.6 mm by 1.7 mm

wide, humeri not dentate, elytral striae fine, moderately deep, strial punctures fine, weakly crenating

both sides of the weakly convex intervals, lateral

intervals not different, surface extremely minutely

punctate. Mesosternum shagreened with fine alutaceous sculpture and short, very fine, appressed

hair, carinate between the coxae. Metasternum

shining, midline weakly impressed, disc with close,

minute punctures, slightly roughened at sides;

metasternal triangle quite shallow, very finely

roughened. First visible abdominal sternum with

barely a trace of posterior marginal line, remaining four sterna with fine, inconspicuous fluting

along anterior margins, surface smooth, polished

with barely a trace of a few scattered, very shallow,

inconspicuous punctures near sides. Fourth sternum shortened at middle, about four-fifths as long

as preceding sternum, the 5th sternum about half

as long. Pygidium very convex, shining, but the

surface very rough and uneven, not punctate. Anterior femora with indistinct anterior groove, posterior groove absent, surface smooth, shining,

polished. Anterior tibia wide, short, upper surface

shining, polished, spur long, opposite middle of

second lateral tooth, tarsi unusually long, the first

segment extending to tip of the spur and as long

as following three segments combined. Middle

femora smooth, polished, with some minute, scattered punctures, three coarse setigerous punctures

at knee, without posterior marginal line. Posterior

femora same as middle but lacking the coarse

punctures at knee. Apex of posterior tibia with

fringe of six, not-closely-spaced setae, without accessory spine. First posterior tarsal segment a little

longer than long spur and equal to length of the

following three segments combined.

Allolype Female: Length 4.2 mm; width 1.7 mm.

The 4th abdominal sternum equally as long as

the 2nd and 3rd sterna, and the pygidium is relatively not quite as long as in the male. No other

differences were noted.
24 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

HOLOTYPE.—USNM 71735.

TYPE-LOCALITY.—Texas, Davis Mts., 27 May

1935, J. N. Knull (Cartwright Coll.).

SPECIMENS EXAMINED.—106.

DATES COLLECTED.—April 30 to August 14.

DISTRIBUTION (Figure 4).—Paratypes. Arizona

(12): "Arizona" (2), H. Soltau Coll. (USNM).

Chinle (3), 26 July 1935, Bruer Coll. (MCZ). Entrance, Chiricahua National Monument (2), Chiricahua Mts., horse dung, 2 July 1956, H. and A.

Howden. Nogales (1), 17 August 1947, F. H.

Parker (Howden Coll.). St. John, Apache County

(3), at light, 29 May 1959, R. S. Beal (Beal Coll.).

Winslow (1), 31 July, Barber and Schwarz.

Arkansas (2): Hope, 30 April 1925, 7 May 1926,

Gehring Coll. (MCZ). Colorado (1): Colorado

Springs, 15-30 June 1896, 6000-7000 ft (Casey

Coll., USNM). Iowa (5): "Iowa," Casey Coll.

(USNM). New Mexico (24): "New Mexico" (2,

includes allotype), T. Pergande (USNM). Albuquerque (3): July 1888, Wickham Coll. (1,

USNM); no date, M. Robinson Coll. (1, USNM).

City of Rocks State Park (1), 17 July 1959, K.

V. Krombein. Deming (3), 22 July, Hubbard and

Schwarz. Glenwood, Catron County (1), 22 June

1941, A. T. McClay. Jemez Mountains (3), 21

July, 8 August, Jos. Woodgate (J. W. Green Coll.).

Las Vegas (7), 13, 14 August 1907, Barber and

Schwarz. Magdalena (2), no date, Strickler (KSC).

Socorro (2), 22 July 1933, W. Benedict (Snow

Museum). Texas (61): "Texas" (3), no date,

Casey Coll. (USNM). Big Bend National Park

(14): Persimmon Gap (1), 2900 ft, 20 May 1959,

Howden and Becker; Boquillas (7), 1850 ft, light,

13, 17, 23 May 1959, Howden and Becker; Nine

Point Draw (5), 2600 ft, light, 20 May, Howden

and Becker. Brownsville (1), light, 9 May 1904,

H. S. Barber. Chisos Mountains (1): 23 July, J.

W. Green (J. W. Green Coll.). Davis Mountains

(16): 27 May 1935, J. N. Knull (5, USNM); 8

June 1939, D. J. and J. N. Knull (1, USNM); 24

June 1956, 14 July 1957, 19 June 1958, D. J. and

J. N. Knull (4, OSU); Jeff Davis State Park (6),

19 July 1968, W. H. Tyson. Del Rio (1): 25-26

April 1959, Becker and Howden. El Paso (3): no

date, Wickham Coll. (2, USNM); 19 July 1932,

E. Ward Thompson (1, MCZ). Fort Davis (20):

carrion, 13 July 1956, H. and A. Howden (2);

4 mi W, light, 15 July 1956, light, 30, 31 May

1959, Howden and Becker (18). Laredo (2): 22-

23 July 1960, H. F. Howden.

REMARKS.—Paratypes vary from 3.8 to 5.0 mm

in length and 1.6 to 1.9 mm in width. Some specimens show pygidial punctures as well as an uneven

surface, and some are distinctly punctate with very

little other sculpture. Ataenius rugopygus is placed

in the figurator group of species, most of which

have a convex, shining, polished pygidium.

10. Ataenius duncani, new species

FIGURE \C

DESCRIPTION.—Holotype Male: Length 4.1 mm;

width 1.5 mm. Elongate, parallel, moderately convex, polished, piceous, legs reddish. Head convex,

margin strongly, sharply, triangularly dentate each

side of shallow, arcuate emargination, sides straight

to sharply rounded right-angled genae, edge finely

reflexed; clypeus finely, transversely rugulose except for a band of fine, close punctures just in

front of the frontal basal band of close, moderate

punctures, generally separated by their diameters

or less. Pronotum convex, 1.1 mm long, 1.5 mm

wide, sides arcuate, sides and base finely margined,

without marginal setae, anterior angles narrowly

rounded, posterior angles very broadly, smoothly

rounded, surface with scattered but rather evenly

distributed, deep, moderate punctures, usually separated by one to three or four times their diameters. Scutellum normal. Elytra 2.5 mm long and

1.5 mm wide, humeri finely, not conspicuously

dentate, striae moderately deep, finely crenatepunctate, the punctures separated by four or five

times their diameters, the punctures as wide as the

striae; intervals flat, the 10th interval slightly convex, surface smooth, impunctate. Mesosternum

finely carinate between the coxae. Metasternum

smooth, shining, midline fine, long, not deeply

impressed, a trace of alutaceous sculpture at extreme sides, metasternal triangle each side not

deeply impressed or sharply delineated. Abdominal

sterna smooth, shining, very finely fluted along

anterior margins, fluting slightly deeper and longer

over lateral fourth; 4th sternum noticeably shorter

at middle, 5th sternum deeply, finely fluted in

front and only half as long as preceding sternum

at middle; pygidium shining, polished, convex,

twice as long as 4th abdominal sternum at middle.

Anterior femur with fine marginal groove only
NUMBER 154 25

along anterior margin, surface smooth, polished.

Middle and hind femora similarly smooth, polished, and without marginal lines. Posterior tibial

fringe of seven setae, without accessory spine, first

posterior tarsal segment one-fourth longer than

the long spur and about one-fourth longer than

the following three segments combined.

Allotype Female: Length 4.6 mm; width 1.8 mm.

About the only noticeable difference from the male

is in the pygidium and 5th abdominal sternum,

which are about equal in length and only slightly

shorter than the 4th sternum.

HOLOTYPE.—USNM 71736.

TYPE-LOCALITY.—Arizona, Tucson. Collected at

black light 11 August 1968 by K. Stephan.

SPECIMENS EXAMINED.—309.

DATES COLLECTED.—May 23 to November 10.

DISTRIBUTION (Figure 2).—Paratypes. Arizona

(239): "Arizona" (12), no other data. "Ariz."

(5): no date, J. W. Green (3), Knauss Coll. (2,

KSU). "So. Ariz." (1), no date, Duncan. Agua

Fria (2), 6 August 1917. Arlington (near), Gillespie Dam, Maricopa County (3), black light,

J. Stibeck. Avondale Ranch, Agua Fria River (10),

7 August 1917, Wheeler (MCZ). Chinle (2), 26

July 1935, Brues Coll. (MCZ). Chiricahua Mountains (38): 9, 16 July 1929, 14 June 1936, 26 July,

2 August 1952, 15, 29 July 1953, 24 July 1955,

27 August 1957, 9, 16, 30 July 1959, 7, 15 August

1959, D. J. and J. N. Knull (36, OSU); Chiricahua

National Monument (2), 17 August 1952, Leech

and Green (Iowa State College). Douglas (3), 24

August 1952, B. Malkin. Florence (5): 3, 19 June,

26 July, C. R. Biederman (4); 28 July 1917,

Wheeler (1, MCZ). Fort Apache (1), 6000 ft, 1

August 1928, R. B. Streets (Werner Coll.). Fort

Grant (2), 23 July, Hubbard and Schwarz. Kirkland (2), 4500 ft, Peoples Valley, Yavapai County,

22-24 August 1927 (Cornell Univ.). Nogales (3),

4, 7 July 1949, 4 August 1954, D. J. and J. N.

Knull (OSU). Palomas, Yuma County (1), 8 August 1917, "C. V. Biol. Exp." (Cornell Univ.).

Patagonia (4): 6 August 1936, M. Cazier (1); 5

July 1954, 11 August 1951, light trap, R. Schmitt

(3, Werner Coll.). Phoenix (60): 3 August 1917,

no other data (3); no date, G. E. Ball (6); no

other data (8, USNM; 1, Field Museum; 23 Rutgers Univ.); 3 August 1917 (14, Cornell Univ.);

no date, H. W. Wenzel (5, Field Museum). Pima

County (8): Organ Pipe Cactus National Monument (3), 11 August 1955, G. D. Butler and F. G.

Werner (Werner Coll.); Robles Ranch (5), 12

July 1947, McClay. Portal (8): 2, 5 August 1965,

B. K. Dozier (7, B. K. Dozier Coll.); 28 July to

6 August 1966, Karl H. Stephan (1, Stephan Coll.).

Safford (1), light trap, 23 June 1954, F. G. Werner

(Werner Coll.). San Simon (1), 19 September

1957, B. Benesh. Santa Cruz Village, Cobabi Mtn.

(1), 10-12 August 1916. Southwest Research Station, near Portal, Cochise County (8): 7, 11 July

1961, B. Benesh (2); 5400 ft, 8 July 1956, O. L.

Cartwright (1); 31 July 1966, J. W. Tilden (5).

Sunnyside Canyon, Huachuca Mts. (2), 8 August,

1 September 1970, K. Stephan. Tempe (2), 7

August 1922, E. W. Walter. Texas Pass, Dragon

Mtn. (1), 21 July 1917, "C V. Biol. Exp." (Cornell Univ.). Tucson (8): no other data (2, Field

Museum); 1 September 1947, R. S. Beal (2, W. F.

Barr); 20 July, Hubbard and Schwarz (1, USNM);

12 July 1935, A. A. Nichol (1); 10 November

1937, Flora Sands (1, Werner Coll.); 11 August

1968, black light, K. Stephan (1). Wilcox (8, includes allotype), 24 July, Hubbard and Schwarz.

Wilcox Playa, Cochise County (37), 24 July, 29

August, 12 September 1970, K. Stephan. California

(19): "California" (1), no date, Casey Coll.

Blythe, Riverside County (10), 27 June, 12, 26

July 1946, W. F. Barr (W. F. Barr Coll.). Ripley,

Riverside County (8), 24 July, W. F. Barr and

P. D. Hurd. Colorado (1): Pueblo, 30 August 1949,

G. H. Nelson (Nelson Coll.). Kansas (5): Hamilton County (2), 3350 ft, F. H. Snow (Drury

Coll.). Reno County (1), no date, J. C. Warren

(Field Museum). Sedgwick County (1), no date,

J. C. Warren (Field Museum). Wyandotte County

(1), no date, J. C. Warren (Field Museum). New

Mexico (13): Albuquerque (1), 11 July 1954, W.

Downes (Iowa State College). Bernalillo (7), 16

July 1922, 15 July 1923, F. Psota (Field Museum).

Deming (3), 22 July, Hubbard and Schwarz

(USNM). Las Vegas (1), 14 August 1901, Barber

and Schwarz. Rodeo (18 mi N), Peloncillo Mts.

(1), 5 July 1956, H. and A. Howden. Texas (31):

"Texas," no other data (1, MCZ). Alpine (5),

1-15 June 1926, O. C. Poling (Cornell Univ.).

Brewster County, Sunny Glen Ranch (1), 5000-

7000 ft, May 1926, C. C. Poling (USNM). Dallas

(1), no other data. Davis Mountains (8), 14-24

June 1957, D. J. and J. N. Knull (OSU). Eagle

Pass (8), 2 July 1947, B. Malkin. El Paso (1), no
26

date, Wickham Coll. (USNM). Hidalgo County

(1), 23 May 1951, D. J. and J. N. Knull (OSU).

Limpia Canyon, Fort Davis, Jeff Davis County

(1), at light, 28 July 1969, W. Suter. San Diego

(4), 25 May, Hubbard and Schwarz (USNM).

REMARKS.—This species is very close to A.

parkeri but usually is black and darker than that

species. It is also more heavily punctate on the

pronotum, and the side margin of the pronotum

shows a slight angle and is not so smoothly arcuate

as in A. parkeri (Figure 1). The paratypes vary in

length from 3.4 to 4.9 mm.

Ataenius duncani is named in honor of Douglas

K. Duncan of Globe, Arizona, a naturalist and

collector with whom I have corresponded for nearly

forty years.

11. Ataenius alternatus (Melsheimer)

Oxyomus alternatus Melsheimer, 1844:137.

Ataenius alternatus.—Harold, in Gemminger and Harold,

1869:1066.—Horn, 1887:75 Schmidt, 1922:442.

DESCRIPTION.—Length 4.0 to 4.9 mm; width 1.8

to 2.0 mm. Oblong, moderately convex, surface

covered with a grayish brown, argillaceous coating.

Head moderately convex; clypeus broadly emarginate, rounded each side, margin narrowly depressed anteriorly at middle, sides weakly arcuate,

very finely reflexed; except for fine, rounded punctures in the anterior depression, head closely,

coarsely punctate, the punctures elongate especially

at sides where they may form lines, long axis of

those of clypeus longitudinal, those of pronotal

area transverse in direction; genae rounded, distinct but not prominent. Pronotum about threefifths as long as wide, sides subparallel, not

completely visible from directly above, finely margined laterally but without basal bead, margins

entire but with very short, widely spaced marginal

setae under high magnification; surface closely,

shallowly, coarsely punctate throughout, only

slightly smaller along anterior margin, in vague,

scarcely depressed midline over basal half and in

a similar vague lateral depression diagonally backward from lateral fovea, anterior angles very obtusely rounded, posterior angles broadly rounded,

base sinuate. Elytra about two and one-half times

as long as pronotum, striae deep, with punctures

separated by twice their diameter but striae and

punctures usually more or less masked by argillaSMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

ceous coating, sutural and alternate intervals more

acutely elevated and cariniform along the middle,

the carinae narrowly, shiny black and usually

broken into close, elongate tubercles, the flatter

intervals also show similar shiny tubercles much

more noticeable over posterior declivity, under

high magnification elytral margin with very fine,

very short setae spaced about twice their length;

humeri moderately dentate. Mesosternum shagreened, covered with fine, short, recurved hair,

carinate between the coxae. Metasternal midline

with deep pit or pore at each end, discal surface

covered with shallow, coarse punctures separated

usually by their diameter or less, widely scabriculate laterally, metasternal triangle shallow and

often indistinct. Abdominal sterna with close,

shallow, finely alutaceous punctures generally separated by twice their diameter or less, the punctures usually masked by alutaceous sculpture

laterally; anterior segments fluted along margin,

each succeeding segment with increasingly wider

fluting, flutings of 5th sternum fully half as long

as total length of sternum. Eroded area of pygidium

finely scabriculate, apically with fine, shining margin. Anterior femora with perimarginal groove,

surface completely covered by close, fine-tomoderate punctures, frequently masked by coating.

Middle femora finely, closely punctate basally,

outer half or less masked by coating, posterior

femoral line shallow, complete. Posterior femora

elongate, subparallel-sided, otherwise similar to

middle femora but with less coating, postfemoral

line complete; first tarsal segment one-fourth

longer than long spur and one-fourth longer than

following three segments combined; tibial fringe

with seven to nine very short fimbriae; without

accessory spine.

HOLOTYPE.—In Museum of Comparative Zoology.

TYPE-LOCALITY.—"Pennsylvania."

SPECIMENS EXAMINED.—400+.

DATES COLLECTED.—March 6 to November 15.

DISTRIBUTION (Figure 6).—Alabama: Mobile.

Florida: Alachua County, Arcadia, Archbold Biological Station, Bartow, Boynton, Capra, Childs

(Highland County), Crescent City, Dunedin,

Dunellon, Enterprise, Everglades National Park,

Fort Myers, Gainesville, Gold Head Beach, Highlands Hammock State Park, Hillsboro, Indian

River, Jacksonville, Jupiter, Kissimmee, Korishan
NUMBER 154 27

FIGURE 6.—Distribution of Ataenius hirsutus Horn, A. alternatus Melsheimer, and

A. oklahomensis Brown.

• hirsutus • alternatus O oklahomensis

State Park, LaBelle, Lake Alfred, Lake City, Lakeland, Lake Letta (near Sebring), Lake Lucy, Lake

Placid, Lake Wales, Mahogany Hammock, Marion

County, Melbourne, Miami, Myakka River State

Park (Sarasoto County), Oneco, Orlando, Pensacola, Punta Gorda, Sanford, Sarasota, Sebring,

Silver Lake Recreational Area (Leon County),

Tampa, Volusia County, Winter Park, Zolfo

Springs. Georgia: Augusta, Beachton, Brunswick,

Hazlehurst, Hinesville, Thomasville, Valdosta, Vidalia, Waycross. Louisiana: Harahan, Sam Houston State Park. Mississippi: Gulfport, Gulf View,

Horn Island, near Ludlow (Leake County), Ocean

City. North Carolina: Swan Quarter. Pennsylvania

(type-locality). South Carolina: Aiken, Aiken State

Park, Allendale, Blackville, Charleston, Clemson,

Columbia, Florence, Hilton Head, Meredith, Summerville, Walterboro. Texas: Atlanta.

REMARKS.—The type of A. alternatus (Melsheimer) was collected in Pennsylvania, and the

Blatchley Collection at Purdue University has a

specimen labeled from Indiana. I have seen no

other specimen from localities north of North

Carolina. It is a common species in southeastern

coastal states from North Carolina to Texas.

12. Ataenius insculptus Horn

PLATE 2a

Ataenius scutptilis.—I.eConte, 1878:402 [not Harold. 1868:

86].

Ataenius insculptus Horn, 1887:70.—Schmidt, 1922:454.—

Robinson, 1947:150.

DESCRIPTION.—Length 3.7 to 4.9 mm; width 1.7

to 2.3 mm. Convex, oblong, moderately shining,

black, legs dark reddish brown. Head convex;

clypeus finely, triangularly dentate each side of

broad, shallow emargination, sides arcuate, genae

sharply rounded, slightly more than right-angled,
28 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

margin finely reflexed; surface slightly concave at

anterior margin between teeth, elsewhere very convex with very fine, close, evenly distributed punctures, generally separated by their diameters or

slightly more; frontal area densely, quite coarsely

punctate, punctures practically contiguous. Pronotum about one and one-half times as wide as

long, slightly wider anteriorly, sides slightly arcuate, anterior angles quite broadly rounded; posterior angles weakly emarginate, base weakly

sinuate, posterior angles noticeably crenate but

without noticeable fringe setae; surface closely

punctate, mixed fine and moderate over central

anterior disc, laterally more uniform in size, still

larger in and posterior to lateral fovae where they

are contiguous, midline broadly, vaguely impressed

basally with punctures closer than in surrounding

area, punctures very fine along anterior margin

at middle. Elytra convex, sides slightly arcuate,

humeri strongly dentate, seven-tenths as wide as

long, pronotum about two-fifths as long; elytral

striae broad and deep; strial punctures coarse,

very slightly crenating sides of intervals, separated

by four times their diameters; intervals narrowly

flattened along each side of convex median carina,

alternate intervals higher over apical declivity,

10th interval flat and finely alutaceous. Mesosternum weakly carinate between coxae. Metasternum with fine median line, disc with close,

moderate punctures separated by less than their

diameters, surface scabrous outward to sides, metasternal triangle not well defined, finely scabrous

within. Abdominal sterna coarsely fluted along

anterior margins, fluting wider on each succeeding

sternum, those of 5th sternum deeper and half

the length of the sternum, otherwise with scattered moderate punctures from side to side generally separated by about their own diameters,

strongly alutaceous at extreme sides. Eroded areas

of pygidium scabrous. Anterior femora with perimarginal groove, surface closely punctate anteriorly

with disc scabrous. Middle and hind femora with

close, very moderate punctures near coxae, gradually closer into scabrous surface toward knee,

posterior femoral lines strong, deep, and complete.

Posterior tibial fringe of eight or nine close, short

setae, a short accessory spine of same length and

an intervening seta between spine and spurs. First

posterior tarsal segment one-third longer than long

spur and one-third longer than three following

segments combined. The penultimate sternum

shorter at middle and the pygidium longer than

in the female.

LECTOTYPE (present designation).—In Academy

of Natural Sciences of Philadelphia, Type Nos

3604.

TYPE-LOCALITY.—Tampa, Florida.

SPECIMENS EXAMINED.—49.

DATES COLLECTED.—April 7 to September 11.

DISTRIBUTION (Figure 4).—Alabama: Mobile

County (swamp forest, W side Mobile Bay).

Florida: Dunedin, Enterprise, Highland Hammock

State Park, Orlando, Tampa. South Carolina:

Cayce (near Columbia). Mississippi: Red Creek

Wildlife Area (George County). New Jersey:

Martha.

REMARKS.—The South Carolina specimens were

collected under cow dung in a seepage area in

woods. All others were collected under deer droppings in wooded areas. Ataenius insculptus superficially resembles A. alternatus (Melsheimer) and

A. cylindrus Horn.

13. Ataenius imbricatus (Melsheimer)

Aphodius imbricatus Melsheimer, 1844:136.

Ataenius imbricatus.—Harold, in Gemminger and Harold,

1869:1066—Horn, 1887:75—Schmidt, 1922:443 Chapin,

1940:20.—Petrovitz, 1962:131.

Ataenius sordidus Harold, 1869:103.—Horn, 1887:75.

DESCRIPTION.—Length 3.3 to 4.3 mm; width 1.6

to 2.0 mm. Dull, grayish brown to grayish black,

legs dark brown; oblong, moderately convex; surface finely alutaceous, usually with more or less

argillaceous appearance, covered with short, stubby

setae, those of the elytral intervals closely spaced

in longitudinal rows. Head convex, clypeus broadly

rounded each side of moderately deep anterior

median emargination, sides weakly arcuate to

nearly straight, the genae rounded, edge finely reflexed; surface narrowly shining, smooth, and concave along anterior margin in front of close, fine

punctures which gradually merge into close lines

of united punctures over greatest convexity, at

sides and base of clypeus the lines long and

close, separated usually by less than their width;

frontal area well marked by dense, much larger

punctures; head punctures bear extremely short,

inconspicuous setae. Pronotum one and one-half

times as wide as long, about one-half as long as
NUMBER 154 29

elytra, sides almost straight and parallel, margined

laterally and basally, the edge weakly crenate with

short, stubby setae generally separated by more

than their length, anterior angles obtusely rounded,

posterior angles rounded but distinct; surface, except for a slightly depressed median basal area

and one (or sometimes two) small, short diagonal

area(s) on each side, smooth, sometimes conspicuous; the entire surface covered with dense, very

moderate, frequently inconspicuously setose punctures. The anterior angles project forward slightly,

the base usually noticeably arcuate. Humeri strongly dentate. Elytra about twice as long as wide,

sides curved inward around shoulders, anteriorly

nearly straight and parallel. In freshly emerged

specimens the elytral striae are moderately wide

and deep, shining, with deep, moderate punctures

separated by about three times their diameters,

the intervals slightly crenated along inner margin;

intervals on disc flat, increasingly convex toward

sides except 10th interval, which is nearly flat,

all are distinctly alutaceous and have a row of

close, short, stubby setae along the outside margin,

occasionally a few setae widely scattered along

the inner margin also. Mesosternum weakly carinate between coxae. Metasternum with an unusually long, moderately fine and deep midline,

finely alutaceous disc with close, shallow, moderate

punctures separated by their diameter or less,

roughly scabrous outward to sides, the metasternal

triangle weak, shallow, and not well defined. Abdominal sterna minutely alutaceous, fluted along

anterior margin, the fluting longer on each succeeding sternum, flutings at middle of 5th sternum

much deeper and half as long as the sternum,

closely, quite coarsely, shallowly punctate from

side to side. Eroded area of pygidium scabrous,

alutaceous. Anterior femora with perimarginal

groove, surface rough, closely, setigerously punctate. Middle femora closely, setigerously punctate,

posterior femoral line complete. Posterior femora

similar but not quite as closely punctate, femoral

line strong and complete. Posterior tibial fringe

of five setae but the middle seta opposite the tarsus

greatly reduced and very short, accessory spine

lacking, first tarsal segment longer than long spur,

longer than following three segments combined.

The male pygidium is longer than that of the

female.

HOLOTYPE.—In Museum of Comparative Zoology.

TYPE-LOCALITY.—"Pennsylvania."

SPECIMENS EXAMINED.—400+ .

DATES COLLECTED.—March 6 to November IS.

DISTRIBUTION (Figure 7).—Alabama: Auburn,

Dadeville, Gulf State Park, Mobile, Salt Mtn.

(Clarke County). Arkansas: Devils Dam State Park,

Hartford, Hope, Monte Ne Br. (Benton County).

Delaware: Georgetown, Rehoboth. District of Columbia. Florida: Archbold Biological Station,

Chipley (5 mi E), Daytona, Dunedin, Edgewater,

Enterprise, Fort Myers, Gainesville, Haulover,

Highlands Hammock State Park, Indian River,

Key West, Kissimmee, Korishan State Park (Lee

County), LaBelle, Lakeland, Lake Letta, Lake

Placid, Lake Wales, Melbourne, Naples (9 mi N),

Orlando, Pensacola, Perrine, Punta Gorda, Sanford, Silver Lake Recreation Area (Leon County),

Stock Island, Tampa, Wakulla County, Washington County, West Palm Beach, Zolfo Springs.

Georgia: Atlanta, Augusta, Demorest (Habersham

County), Hinesville, Milner, Waycross. Illinois:

"Illinois" (Ulke Coll., Carnegie Museum). Indiana:

Grantsburg, Lake County, Tremont. Kentucky:

Louisville, Wolf Creek Lake (Wayne County).

Louisiana: Covington, Gueydan, Harahan, Sam

Houston State Park, Shreveport. Maryland: Glen

Burnie, Hebbville, Hyattsville, Lanham, Marlboro,

Sherwood Forest, Tacoma Park. Massachusetts:

Chicopee, Tingsboro. Michigan: Detroit, Midland

County, Oakland County, Port Huron. Minnesota:

Alexandria, Minneapolis, St. Paul. Mississippi:

Gulfport, Horn Island, Lucedale, Ocean Springs.

Missouri: Nevada (Vernon County). Nebraska:

Brown County (extreme NW corner), Halsey, Holt

County, Neligh. New Hampshire: "New Hampshire." New Jersey: Anglesea, Atlantic City, Ocean

County, Prosportown, Sea Island City, Wildwood.

New York: Peekshill, Rosedale. North Carolina:

Balsam, Black Mtns., Buck Forest, Cedar Mtn.,

Clarkton, Falsom, Raleigh, Swan Quarter. Ohio:

Holgate, Marietta. Oklahoma: Broken Bow, McCurtain County, Texhoma (near Willis). Pennsylvania: Philadelphia, Scarlet Hills. South Carolina:

Blackville, Charleston, Clemson, Columbia, Florence, Folley Beach, Jocassee, Liberty, Sullivans

Island, Yemassee. South Dakota: Elk Point. Tennessee: Cookeville, Reelfoot Lake. Texas: Anderson County, Columbus, Corpus Christi, Galveston,
30 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 7.—Distribution of Ataenius puncticollis (LeConte) and A. imbricatus Melsheimer.

~k puncticollis • imbricatus

Kingsville, Lake Refugio, Linden, Lolita, Victoria.

Virginia: Big Cobbler Mtn. (Fauquier County),

Blacksburg, Cape Henry, Chatham, Dumfries

(Prince William State Park), Fort Myer, Fort

Monroe, Middleburg, Nelson County, Norfolk,

Rosslyn, Sweet Briar (Amhurst County), Suffolk

(Dismal Swamp), Williamsburg. West Virginia:

Hamlin, Orkway Springs. Wisconsin: Bayfield,

Carol Beach (Kenosha County), Friendship

(Adams County), Wood County. Canada: Ontario:

Dunnville, Point Pelee.

REMARKS.—The most interesting feature of this

species is the close resemblance of the posterior

tibia 1 fringe to that found in Australian species.

Except for the known worldwide species obviously

introduced into Australia, all Australian species

I have examined have a fine hair in the tibial

fringe opposite the first tarsal segment. In A. imbricatus the middle seta of the five setae in the

fringe is opposite the tarsus, is much reduced,

and is much shorter than the others. American

species usually have the fringe setae all alike in

size and length.

Ataenius imbricatus is placed in a group of very

similar species, most of which occur in Central and

South America.

Jerath (1960:78) described the larva of A. imbricatus (Melsheimer).

14. Ataenius superficialis, new species

PLATE 2b

DESCRIPTION.—Holotype Male: Length 3.6 mm;

width 1.7 mm. Oblong-ovate, convex, covered with

a gray argillaceous coating which does not adhere

to the surface as tightly as in imbricatus, legs and

anterior margin of clypeus reddish. Head convex,

clypeal edge finely, not strongly reflexed, margin

broadly rounded each side of a moderately deep

median emargination, sides weakly arcuate to depressed, nearly right-angled genae; surface con-
NUMBER 154 31

cave, smooth, shining, dark castaneous behind

emargination, then above very quickly, closely

from minute to shallowly coarsely punctate, the

intervening spaces finely alutaceous, from middle

of disc to sides and base the punctures are setigerous, larger, become elongate, crowded, many uniting to form lines, especially near front, the setae

are very short and inconspicuous; front and occipital area densely covered with shallow, coarse,

round punctures showing through the argillaceous

coating, frontal-clypeal suture in part bare and

unusually distinct. Pronotum 1.5 mm wide and

1.1 mm long, anterior angles obtuse, hind angles

broadly rounded, sides feebly arcuate, sides and

base without distinct marginal groove but sides

very finely reflexed, sides and base with very short,

stubby marginal setae separated at sides by twice

their length, a little closer opposite humeri; surface everywhere with dense, coarse, setigerous

punctures, the setae minute and inconspicuous,

punctures a little finer near anterior margin; a

flat, smooth, minutely alutaceous midline over

posterior half and a short, dark, uncoated spot

midway to sides, just posterior to midpoint between anterior and posterior margins. Elytra 2.4

mm long and 1.7 mm wide, convex, ovate, widest

beyond middle, humeri finely dentate, striae deep,

wide, mostly shining, except for deep strial punctures, the punctures not crenating the sides of the

moderately convex intervals, each interval with

a row of short, stubby setae along outside margin,

occasionally a few setae along inner margin also,

elytral margin with similar setae, the tenth interval not as convex. Mesosternum shagreened, with

fine sculpture and the usual very fine, short, decumbent hair, sharply carinate between the coxae.

Metasternal disc coarsely, closely, shallowly punctate, midline long, shallow, surface rough and

scabrous outward to sides, metasternal triangle

weakly developed, masked by rough sculpture.

First visible abdominal sternum with fine posterior

marginal line, remaining four sterna with fine fluting along anterior margin, longer on each following

sternum, flutings of 5th sternum nearly half as

long as sternum, surface very closely, shallowly,

coarsely punctate with punctures within and surrounding area very finely alutaceous. All coarse

punctures of underside minutely setigerous under

high magnification. Pygidium with apical smooth

margin very fine or possibly absent, surface otherwise finely, roughly alutaceous (covered by argillaceous coating in holotype). Fourth abdominal

sternum half as long as preceding sternum; pygidium much longer than in female. Anterior

femora with perimarginal groove, surface closely,

very roughly sculptured, some setae visible in profile. Middle femora minutely alutaceous and

coarsely, shallowly, setigerously punctate, the outer

half closely, roughly punctate, posterior marginal

line strong, deep, complete, with a marginal row

of widely spaced, short, stubby setae. Posterior

femora similar in every way except that the coarse

punctures are generally separated by about twice

their diameters and there are three or four long,

stiff setae near the knee. Apical fringe of posterior

tibia of four or five short, well-separated setae,

without accessory spine. (The normal number of

setae is five, with the middle one about half as

long as the other four.) First segment of posterior

tarsus noticeably longer than the long spur, the

following three segments combined shorter than

the long spur.

Allotype Female: Length 3.6 mm; width 1.7 mm.

About the only differences from the male seem to

be the longer 4th sternum and shorter pygidium.

The allotype is almost completely denuded of the

argillaceous coating, and surface sculpture can be

seen much more clearly.

HOLOTYPE.—USNM 71737.

TYPE-LOCALITY.—Big Pine Key, Florida. Holotype, allotype, and five paratypes collected together

under animal dropping (possibly from a racoon),

15 May 1959, O. L. Cartwright.

SPECIMENS EXAMINED.—Seven.

DATE COLLECTED.—May 15.

DISTRIBUTION (Figure 8).—Paratypes. Florida:

Big Pine Key.

REMARKS.—Ataenius superficialis is closely related to A. imbricatus (Melsheimer) but is shorter,

more oval in shape, and the argillaceous coating

does not adhere so tightly.

15. Ataenius miamii Cartwright

Aiaevius miamii Cartwright, 1934:200; 1941:33.

DESCRIPTION.—Length 3.2 to 4.2 mm; width 1.5

to 1.9 mm. Oblong-oval, convex, piceous, opaque,

anterior margin of head and legs reddish, antennae

testaceous. Head convex, clypeus broadly rounded
32 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 8.—Distribution of Ataenius strigatus (Say), A. stroheckeri, new species, and

A. superficialis, new species.

• strigatus o stroheckeri * superficialis

each side of moderately deep, median emargination, sides arcuate to narrowly rounded genae, the

genae greater than a right angle, clypeal margin

weakly concave, more noticeably so at middle, edge

very finely, inconspicuously reflexed; clypeal surface shining, narrowly impunctate around margin,

elsewhere opaque, densely punctate, the punctures

much finer anteriorly, outward from a few simple

punctures at middle the very moderately coarse

punctures coalesce into short, longitudinal lines,

above the frontal suture the punctures round,

slightly larger, practically contiguous. Pronotum

averaging about 1.6 mm wide by 1.1 mm long,

angles all obtusely rounded, sides subparallel, base

evenly arcuate, sides and base finely margined,

marginal setae very short and inconspicuous, surface densely, shallowly, moderately coarsely punctate throughout, slightly smaller over anterior disc,

punctures minutely setigerous, especially at sides.

Elytra convex, oval, averaging about 2.3 mm long

by 1.7 mm wide, humeri strongly dentate, striae

deep, strial punctures slightly crenating inner margin of intervals, subcarinately convex, outer margin

of interval with row of shallow, moderate setigerous punctures, the setae short, semierect, lateral

intervals not different from others, entire surface

alutaceous. Mesosternum roughly alutaceous with

short, recurved hair, sharply carinate between the

coxae. Metasternum minutely alutaecous, midline

long, moderately deep, disc with scattered, shallow, coarse punctures a little closer anteriorly but

generally separated by about their diameter, scabrous outward to sides, metasternal triangle not

deep or sharply defined. Abdominal sterna alutaceous, coarsely, shallowly, rather closely setigerously

punctate, the setae very short, punctures separated

by their diameter, fluting along anterior margin

of 5th sternum nearly half as long as sternum.

Pygidium with narrow, smooth apical lip, disc

widely, roughly eroded. Anterior femora with peri-
NUMBER 154

marginal groove, surface finely scabrous with numerous, very short setae. Middle femora with

numerous fine, setigerous punctures, the setae very

short, postfemoral marginal line deep and complete. Posterior femora same as middle femora

but with three to five coarse, setigerous punctures

at knee, the conspicuous setae moderately long.

Posterior tibial fringe of six setae, without accessory spine, first ta'rsal segment slightly longer than

long spur, and longer than the following three

segments combined. Fourth abdominal sternum

shorter at middle in males and the pygidium relatively longer than in females.

HOLOTYPE.—USNM 50764.

TYPE-LOCALITY.—Miami, Florida.

SPECIMENS EXAMINED.—142+ .

DATES COLLECTED.—March 20 to December 29.

DISTRIBUTION (Figure 9).—Alabama: Spring Hill.

District of Columbia. Florida: Alachua County,

Bell, Dunedin, Fort Myers, Gainesville, Miami,

Pensacola, Punta Gorda, Sanford, Seminole County, Tampa. Georgia: Jekyll Island, St. Simons Island. Illinois: Olive Branch. Maryland: Flag Pond

(Kenwood Beach). Mississippi: Biloxi (Keesler

Field), Horn Island. New Jersey: Lakehurst. New

York: Staten Island. North Carolina: Highlands

(Satulah Mm.). South Carolina: Aiken, Batesburg,

Charleston, Clemson, Folly Beach, Isle of Palms,

Lancaster, Nichols, Sullivans Island, Summerville.

Texas: "Texas." Virginia: Fredericksburg.

REMARKS.—Ataenius miamii may be recognized

by its dull surface, short suboval form with subcarinate elytral intervals, and very short inconspicuous pubescence. It may be confused with A.

imbricatus, but A. imbricatus is longer and has

flat elytral intervals and much more conspicuous

pubescence. Although rather widely distributed in

the eastern states it is usually not a common

species.

16. Ataenius havanensis Bahhasar

Ataenius havanensis Balthasar, 1938:56; I952a:227.

Ataenius miamii. Chapin, 1940:41 [not Cartwright, 1934:

200].

Ataenius fleutiauxi Paulian, 1947:42. [New synonomy.]

DESCRIPTION.—Length 3.5 to 4.2 mm; width 1.7

to 1.9 mm. Convex, elongate-oval, black or grayish

black, anterior margin of clypeus and legs reddish

brown. Head convex, clypeal margin finely reflexed, broadly rounded each side of strong, broad

median emargination, sides moderately arcuate to

rather sharply angled genae; surface of anterior

fifth smooth and shining, middle convexity minutely, densely punctate anteriorly then gradually

very finely punctate over a decreasing area to upper

fourth, over basal fourth and down laterally to

smooth margin densely covered with elongate

punctures, many of which unite into long furrows

especially toward sides basally; frontal and genal

punctures dense, round, fine on genae, moderately

coarse and shallow along front and base. Pronotum

about two-thirds as long as wide, convex, sides

and base slightly arcuate, fimbriate-crenate, moderately deeply margined, anterior angles obtusely

angled, posteriorly the sides evenly rounded into

base; surface densely, shallowly, minutely setigerously punctate, the punctures coarse, shallow, practically contiguous from anterior angles around and

over basal half of pronotum, very gradually smaller

and less close to anterior margin at middle but

still separated by less than their diameters, those

at anterior margin about half the size of those at

base and about the same size as the frontal-basal

punctures of the head but not as close. Elytra

convex, oval, about three-fifths as wide as long,

humeri dentate, elytral striae moderate, shining,

strial punctures deep, intervals tectiform, the

median ridge fine and shining, the flat slope each

side minutely alutaceous, the outside slope with

a row of short, recurved, quite inconspicuous setae,

lateral intervals not noticeably different. Mesosternum shagreened with strong alutaceous sculpture and fine setigerous punctures, setae recurved

as usual, strongly, sharply carinate between the

coxae. Metasternum with strong, deep midline,

disc with close, coarse, shallow setigerous punctures, scabriculate outward to sides, triangle

moderate, scabriculate. First abdominal sternum

margined posteriorly, remaining sterna fluted along

anterior margin, increasingly wider posteriorly

with fluting of terminal sternum half as long as

sternum; surface of all sterna closely, shallowly,

moderately coarsely, minutely setigerously punctate. Pygidium eroded, the margins finely cariniform, anterior femur with perimarginal groove,

surface moderately closely setigerously punctate.

Middle and hind femora not closely, shallowly,

finely punctate, posterior marginal line strong and

complete. Posterior tibial fringe of six short setae,
34 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 9 Distribution of Ataenius pseudohirsutus, new species, A. miamii Cartwright, A.

barberi, new species, and A. californicus Horn,

o pseudohirsutus • miamii • barberi it califomicus

without accessory spine; first tarsal segment longer

than long spur and longer than the following three

segments combined. Male pygidium relatively

longer than in female.

HOLOTYPE.—In Deutsches Entomologisches Institut.

TYPE-LOCALITY.—Cuba: "Umgebung von Havana."

SPECIMENS EXAMINED.—10 from United States;

many from West Indies.

DATES COLLECTED.—May 9 to August 9.

DISTRIBUTION (Figure 10).—Florida: Garden

Key, Stock Island (Monroe County). West Indies:

Barbados, Cuba, St. Croix. St. Kitts.

REMARKS.—Ataenius havanensis is superficially

very close to A. miamii Cartwright but is noticeably

different on direct comparison. The pronotal punctures of A. miamii are nearly uniform in size and

smaller than in A. havanensis, in which the basal

punctures of the pronotum are practically contiguous and twice the size of those anteriorly. In

A. havenensis the elytral intervals are noticeably

tectiform with the narrow ridge shining; in A.

miamii the elytral intervals are rarely shining and

always more evenly rounded.

The Stock Island specimens were taken in a

blacklight trap by F. A. Buchanan on 9 August

1968. The Garden Key specimen was in sand and

debris near the beach.

17. Ataenius semipilosus Van Dyke

Ataenius semipilosus Van Dyke, 1928:158.

DESCRIPTION.—Length 3.2 to 4.3 mm; width 1.4

to 1.8 mm. Oblong-oval, convex, shining, dark

castaneous. Head strongly convex, clypeal margin

finely reflexed, subdentate each side of moderately

deep median emargination, sides feebly arcuate to

rounded genae, the genae with four or five mod-
NUMBER 154 35

FIGURE 10.—Distribution of Ataenius punctifrons, new species, A. erratus Fall,

and A. havanensis Balthasar.

•k punctifrons • erratus o havanensis

erately long setae; clypeal surface finely, transversely

wrinkled anteriorly, the wrinkles becoming obscure over and above median area, basally with

indistinct very moderate punctures, front and occiput with wide transverse band of moderate punctures separated by one to four times their diameter.

Pronotum convex, about three-fourths as long as

wide, lateral edges hidden when viewed from

directly above, all angles obtusely rounded, sides

and base arcuate, strongly margined, laterally

fimbriate with moderately long, fine setae, crenulations indistinct; surface quite evenly, coarsely

punctate throughout, punctures separated by less

than one to four times their diameters, a little

smaller approaching anterior margin. Elytra

elongate-oval, one-fourth longer than wide, convex, humeri sharply dentate, striae moderate, deep,

strial punctures crenating sides of the moderately

convex intervals, lateral intervals not different,

outside margin of interval, occasionally inside, with

row of fine, setigerous punctures, the setae very

fine, nearly as long as width of the intervals but

not very conspicuous, edge of elytra fimbriate, with

the setae separated by their length or less. Mesosternum shagreened as usual, carinate between the

coxae. Metasternum shining, midline moderately

deep, disc punctate, the scattered punctures fine

at middle, increasing in size outward to coarse

at sides, close and rough at extreme sides, metasternal triangle deep, finely scabrous within. Abdominal sterna moderately and coarsely closely

punctate from middle to sides, some setigerous

at sides, 5th sternum with a row of very close

setigerous punctures, the setae long and fine; first

visible sternum with fine posterior marginal line,

the other four sterna finely fluted along anterior

margin, the fluting longer on each successive segment, that of the fifth sternum half as long as the

sternum. Pygidium with narrow, shining, apical

lip and marginal row of long, fine setae, disc
36

roughly eroded. Anterior femora with perimarginal

groove, surface smooth in front, coarsely, closely

punctate posteriorly. Middle femora shining, with

row of coarse setigerous punctures along anterior

edge, and a group of similar punctures over outer

third, posterior femoral line short, several setigerous punctures along posterior edge of femur. Posterior tibial apical fringe, six short, even setae,

a strong triangular accessory spine, and an intervening seta between the spine and spurs; long

spur, first tarsal segment, and following three segments combined about equal in length. The sexes

are not easily separated but the pygidium in the

male is longer than in the female.

HOLOTYPE.—In Van Dyke Collection, California

Academy of Sciences.

TYPE-LOCALITY.—"Texas Pass, Dragon [Dragoon] Mountains, Arizona."

SPECIMENS EXAMINED.—84.

DATES COLLECTED.—June 8 to August 12.

DISTRIBUTION (Figure 5).—Arizona: Baboquivari

Mts., Benson, Chiricahua Mts., Cobabi Mts., Douglas, Globe, Nogales, Portal (in Neotoma nest),

Sabino Canyon (Catalina Mts., Pima County),

Santa Cruz Village, Texas Pass (Dragoon Mts.),

Tucson. Texas: 30 mi N of Presidio.

REMARKS.—Superficially, A. semipilosus resembles A. hirsutus, but the uniform size of the pronotal punctures of A. semipilosus clearly separate

the two species.

18. Ataenius hirsutus Horn

Ataenius hirsutus Horn, 1871:288; 1887:86.—Schmidt, 1922:

428.

DESCRIPTION.—Length 3.5 to 4.8 mm; width 1.6

to 2.1 mm. Dark castaneous to piceous black, oblong, convex, shining, elytra pubescent. Head moderately convex; clypeus subangulate each side of

deep median emargination, sides weakly arcuate,

genae nearly right-angled, edge finely reflexed;

surface transversely wrinkled anteriorly, posterior

clypeus and frontal area closely, moderately punctate, the punctures generally separated by one

diameter or less. Pronotum convex, two-thirds as

long as wide, sides and base arcuate, strongly margined, crenate fimbriate, the crenations conspicuous, the setae moderately long, laterally separated

by their own length, slightly longer at anterior

angles, shorter and closer at middle of base, anSMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

terior angles obtusely rounded, posterior angles

very broadly rounded into base; surface quite uniformly punctate throughout with mixed fine and

rather shallow, very coarse punctures, the latter

generally separated by their diameter or less. Elytra

five-sevenths as wide as long, two and one-third

times as long as pronotum; humeri slightly dentate,

sides weakly arcuate, striae moderately fine and

deep, fine strial punctures widely spaced; intervals

convex with a row of moderate setigerous punctures each side along the striae, the setae conspicuous, erect, fine, and about three-fourths as long

as width of the intervals, distance between setae

variable but averaging about as far apart as their

length; surface of intervals frequently minutely

alutaceous under high magnification (X 54). Tenth

interval slightly flatter, otherwise all intervals

about the same. Mesosternum very weakly convex

between the coxae. Metasternum with long, fine,

weakly impressed midline ending in a slight pore

anteriorly; disc with scattered, fine punctures separated by two or three times their diameters, a

small group of very moderate punctures at extreme

sides; metasternal triangle not sharply defined,

sometimes with very fine alutaceous sculpture

within. Abdominal sterna with the usual fluted

anterior margin, the fluting of the 5th sternum

deep and half as long as the sternum; surface of

sterna with scattered, not numerous, fine to very

shallow, coarse, close punctures at sides, the latter

with fine hairs decumbent on anterior sterna and

gradually more erect on posterior sterna, those of

the terminal sternum from side to side and quite

long; the rather wide apical lip and the eroded

area of pygidium with similar, sparse, long hairs.

Anterior femora with perimarginal groove, surface smooth, shining, with a few scattered fine-tomoderate punctures. Middle and hind femora

shining, smooth, with scattered fine punctures,

posterior femoral lines short, one-fourth to onehalf length of femur. Posterior tibia with fringe

of five setae, a very short accessory spine, and an

intervening seta between spine and spurs, this

latter not easy to see. First tarsal segment equal

to length of long spur and very slightly longer

than following three segments combined. The

males have a longer pygidium and the spur of the

anterior tibia is bent inward at the tip.

HOLOTYPE.—Academy of Natural Sciences of

Philadelphia, No. 3615.
NUMBER 154 37

TYPE-LOCALITY.—Camp Grant, Arizona.

SPECIMENS EXAMINED.—218+ .

DATES COLLECTED.—June 23 to September 1.

DISTRIBUTION (Figure 6).—Arizona: Agua Fria,

Benson (Black Dike Project), Sierritas, Buckeye,

Colossal Cave Park, Cutter (Gila County), Douglas, Fort Grant, Globe, Huachuca Mts., Kits Peak

Rincon (Baboquivari Mts.), Molino Canyon (Santa

Catalina Mts.), Nogales, Oracle, Organ Pipe

Cactus National Monument (Pima County), Pajarito Mts., Palo Alto, Pena Blanca (Pajarito Mts.),

Phoenix, Pinal Mts. (Gila County), Portal (in

nest of Neotoma), Sabino Canyon (Santa Catalina

Mts.), Sacaton, Safford, Santa Cruz County, Tempe,

Tucson, Wickenburg (Maricopa County). Kansas:

Wyandotte County (Psota Coll., Field Museum).

New Mexico: Las Cruces (near), Lordsburg. Texas:

Dallas, Summerfield.

REMARKS.—Ataenius hirsutus is identified by the

very hairy elytra and the evenly distributed, mixed

very coarse and fine punctures of the pronotum.

It is sometimes attracted to lights in enormous

numbers in northern Mexico.

19. Ataenius pseudohirsutus, new species

DESCRIPTION.—Holotype Male: Length 4.2 mm;

width 1.9 mm. Oblong, convex, piceous, anterior

margin of head and pronotum and legs reddish,

moderately shining. Head convex, clypeal edge

finely reflexed, somewhat angularly rounded each

side of moderately deep median emargination,

sides very slightly arcuate to nearly right-angled

genae; clypeal surface transversely wrinkled anteriorly, finely, closely punctate above greatest convexity, frontal area not quite as closely punctate,

the very slightly larger punctures separated by

about their diameter, occipital area with more

widely separated punctures. Pronotum moderately

convex, 1.2 mm long by 1.7 mm wide, anterior

angles obtusely rounded, posterior angles widely

rounded, sides and base margined, slightly crenate,

fimbriate with moderately long, almost transparent

setae, longest at anterior angles where their length

is twice the distance between the setae; surface

punctures mixed fine and coarse, the latter shallow and more numerous from halfway outward to

sides, those of discal area finer and less numerous,

the evenly spaced fine punctures generally separated by about twice their diameters. Elytra convex, humeri finely dentate, 2.7 mm long, 1.9 mm

wide, striae fine, deep, strial punctures crenating

inner margins of the very weakly convex, minutely

alutaceous intervals, lateral intervals not different,

all with a row of close, minute punctures near

each margin, laterally and over apical declivity

the punctures bear very fine, short, erect setae,

elytral margin with similar rather inconspicuous

setae also. The sutural interval bears a single line

of close, minute punctures without larger punctures

near scutellum. Mesosternum shagreened with very

fine alutaceous sculpture and fine, short, decumbent hair, finely carinate between the coxae.

Metasternum smooth, shining, disc with evenly

distributed minute punctures, midline long, moderately deep, ending in a deeper pore anteriorly

between the bases of the coxae, smooth outward

to sides and in the metasternal triangle, only a

suspicion of a very shallow, roughened area at

extreme sides. First visible abdominal sternum

with posterior marginal line, following sterna

fluted along anterior margin, fluting of all but

5th sternum become much longer at the sides, those

of the 5th sternum deeper and half the length of

the sternum, surface otherwise smooth and shining

but with very fine punctures at middle and scattered, very shallow, moderate punctures outward

to sides, 4 th sternum at middle about half as long

as preceding and with three or four long, erect

setae in a transverse row near sides, 5th sternum

with a similar row of long setae almost meeting

at middle. Pygidium with rather wide, convex,

shining, apical lip bearing three or four erect

setae, disc deeply, roughly eroded. Anterior femora

with perimarginal groove but it is weak and vague

posteriorly, surface shining, vaguely uneven with

a few shallow, fine punctures; anterior spur of foretibia hooked downward at apex. Middle and hind

femora smooth, shining, with scattered, very minute

punctures and two or three coarse setigerous punctures at knee, posterior marginal lines weak, extending inward about two-fifths of distance from

knee. Posterior tibial apical fringe of five setae,

accessory spine not quite as long, and an intervening seta between spine and spurs. First posterior

tarsal segment and long spur about equal in length,

longer than following three segments combined.

Allolype Female: Length 4.6 mm; width 2.6 mm.

Collected at San Antonio, Texas. The spur of the

anterior tibia is not apically curved downward and
38 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

the pygidium is shorter, with a very narrow, transverse, eroded discal area. Otherwise there seems to

be little to separate the two sexes.

HOLOTYPE.—USNM 71738.

TYPE-LOCALITY.—The holotype bears data as

follows: "Austin, Texas, June 29, Collection H.

Soltau."

SPECIMENS EXAMINED.—107.

DATES COLLECTED.—May to September.

DISTRIBUTION (Figure 9).—Paratypes. Arizona

(11): Chiricahua Mountains (8), 17 July 1957, 2

June, 16 July 1959, D. J. and J. N. Knull (OSU).

Pena Blanca Lake (3), 26 July 1963, G. H. Nelson

and family. Massachusetts (1): Plymouth, C. T.

Brues (MCZ) [a very doubtful record]. Texas (94):

"Texas" (10): 1932, Wickham Coll. (3, USNM);

no date, UlkeColl. (2, Carnegie Museum); no other

data (2, Oregon State College; 2, Casey Coll.,

USNM; 1, USNM). Austin (9), 29 June, H. Soltau

Coll. (USNM). Brownsville (8): no date, Wickham

(1, Casey Coll., USNM); no date, "Catalog 916"

(1); no date, Townsend (4, USDA); 22 June 1895,

Townsend (1, USDA); 24 May 1941, W. Goodpaster (1). Cameron County (2), September, Wickham Coll. (USNM). Columbus, (2), 8, 13 August,

Hubbard and Schwarz. Devils River (1), Highway 90, 11 July 1941, W. F. Barr (Barr Coll.).

Edinburg (3), no date, Chittenden Coll. (USNM).

Hearne (1), 8 June, no other data. Lake Corpus

Christi State Park (1), 15 June 1971, G. H. Nelson. Laredo (1), 2 July 1947, B. Malkin. Lee

County (2), no other data (Casey Coll., USNM).

New Braunfels (3): 27 June, Soltau (2); 25 July,

Wickham (1, Wickham Coll., USNM). Pharr (1),

at light, 25 May 1947, George B. Vogt. San Antonio (12): 22 June, Soltau (1); no other data

(11, includes allotype). San Diego (4): 25 May

(3, USDA); 26 June (1, USDA). San Patricio

County (1), no date, "US 77 and Tex. 9, animal

burrow," Griffin. Sharpsburg (2), 10 May, Hubbard and Schwarz. Sinton, Welder Wildlife Foundation (22), 3 May 1967, A. and M. E. Blanchard.

Uvalde (2), 930 ft, 18-20 June, Wickham (Wickham Coll., USNM). Zavalla County, Nueces River

(7): 4 July 1910, no other data (1); 1 July 1910,

Pratt (6).

REMARKS.—Ataenhis pseudohirsutits, as the name

indicates, is very close to A. hirsutus Horn. It

differs in having much less conspicuous elytral

setae, in lacking the basal row of very coarse punctures on the sutural interval near the scutellum,

as found in A. hirsutus, and the discal elytral intervals being nearly flat. Both A. hirsutus and A.

pseudohirsutus are very similar to A. setiger Bates

(1887:98), but A. setiger has a much less punctate

pronotum and the elytra have long noticeable

setae, as in A. hirsutus, except over the anterior

disc, the area around the scutellum being practically devoid of setae.

20. Ataenius sabinoi, new species

DESCRIPTION.—Holotype Male: Length 3.4 mm;

width 1.6 mm. Oblong-ovate, convex, shining,

dark red-brown. Head convex, edge of clypeus very

finely reflexed, finely dentate each side of moderately deep median emargination, sides arcuate to

quite sharply rounded, almost right-angled genae;

surface of clypeus narrowly concave back of median

emargination, otherwise convex, faintly, transversely wrinkled with scattered, vague, minute

punctures along basal sutural area, frontal occipital area with close, fine punctures separated by

their diameters. Pronotum 1.45 mm wide and 1.0

mm long, convex, anterior angles obtusely rounded,

posterior angles rounded but distinct, sides slightly

arcuate, base arcuate, sides and base margined,

edge fimbriate, inconspicuously crenate, the marginal setae very moderate in length, separated by

about their own length; surface everywhere evenly,

closely, coarsely punctate, generally separated by

their diameter or less, only in the anterior, middle

area do they gradually become very moderate in

size. Elytra 2.3 mm long and 1.6 mm wide, convex, sides strongly arcuate, humeri finely dentate,

striae strong and deep, strial punctures weakly

crenating inner margins of the more or less carinately convex intervals, except near the scutellum

the intervals are slightly concave and minutely

alutaceous along each side and have a row of

setigerous, rather coarse punctures, the row along

the outside margin being especially noticeable,

the 10th interval is a little flatter than the others,

the fine, short setae are more noticeable laterally

and over the apical declivity, posteriorly the edges

of the elytra are noticeably crenate with the setae

and crenations widely separated. Mesosternum

shagreened with fine alutaceous sculpture and

short appressed hair, sharply, finely carinate between the coxae. Metasternum shining but mi-
NUMBER 154

nutely alutaceous, midline strong and deep, disc

and outward to sides fine to moderate punctures

separated by about their diameter, the fine punctures are along the midline and on anterior and

posterior areas; scabrous at extreme sides, metasternal triangle deep, well defined, finely scabrous

and extending farther toward sides than in most

species. First visible abdominal sternum with posterior marginal line, remaining four sterna with

increasingly wider fluting along anterior margin,

the fluting of the 5th sternum at middle half as

long as the sternum, surface punctate from side

to side, very moderate in size at middle to coarse

and shallow at sides, generally separated by one

or two diameters and in two very irregular transverse rows. The 4th sternum is shortened at middle

to about three-fourths the length of the preceding

sternum. Pygidium with very narrow, shining,

apical lip, disc deeply eroded. Anterior femora

with perimarginal groove, surface with fine setigerous punctures separated by two or three times

their diameters. Middle and hind femora similarly

punctate, posterior femoral lines deep and complete. Apical fringe of posterior tibia of six short

setae, a strong accessory spine, and an intervening

setae between the spurs and spine. Metatarsus

and long spine equal, longer than following three

segments combined.

HOLOTYPE.—USNM 71739.

TYPE-LOCALITY.—Arizona, Tucson (Catalina

foothills), "Den #2, Neotoma sp.," Berlese funnel,

2 August 1962, W. L. Nutting, P. Mehringer.

SPECIMENS EXAMINED.—Four.

DATES COLLECTED.—July 30 to August 28.

DISTRIBUTION (Figure 4).—Paratypes. Arizona

(2): Pima County, Tucson (10 m E), at light, 30

July 1969, W. Suter. Sabino Canyon (1), 9 August

1953, G. D. Butler. Mexico (1): Baja California:

La Paz (25 mi W), light trap, 30 August 1959,

K. W. Radford and G. F. Werner.

REMARKS.—Paratypes measure 3.7 and 3.8 mm

in length. I found no differences otherwise.

Ataenins sabinoi is very similar to A. semipilosus

Van Dyke but these species are easily separated

by differences in the elytra. Ataenius semipilosus

has evenly convex elytral intervals and much

longer, more conspicuous setae. The two species

were collected together in the same Neotoma nest.

39

21. Ataenius vandykei, new species

DESCRIPTION.—Holotype Female (?): Length 3.5

mm; width 1.6 mm. Oblong, convex, moderately

shining, head and pronotum dark castaneous,

elytra darker, almost piceous, elytra rough, setigerous punctures with very fine, short setae. Head

convex, clypeal margin finely reflexed, sharply,

triangularly dentate each side of moderate median

emargination, sides weakly arcuate to sharply

rounded, almost right-angled genae; clypeal surface transversely wrinkled anteriorly, middle of

disc narrow, minutely punctate, basal half closely,

very finely punctate, the punctures elongate, generally twice their width, tending to form lines

toward the sides; front and occiput evenly, densely,

rather finely punctate, the punctures round at

middle, slightly transversely elongate toward sides.

Pronotum 1.5 mm wide and 0.9 mm long, convex,

anterior angles rather widely, evenly rounded, posterior angles broadly, evenly rounded from sides

into base, base slightly angular at middle, sides

and base finely margined, edge with extremely

minute, short setae and crenations under high

magnification; surface everywhere densely, evenly,

very moderately punctate. Elytra convex, 2.2 mm

long, 1.6 mm at widest, slightly beyond middle,

sides feebly arcuate, humeri sharply dentate, striae

fine, moderately deep, deep strial punctures slightly

crenating inner margins of the subcarinately convex intervals; the intervals are more or less flattened and alutaceous each side with the convex

middle broken into round-to-elongate tubercles by

a median row of fine, setigerous punctures, the

punctures separated by two to three times their

diameters, the setae very short and stubby; apically

the striae become wider, the intervals narrow and

more sharply convex; the lateral intervals not

different. Mesosternum shagreened as usual, surface sculpture fine with very fine, short hair. Metasternum shining, midline strong and deep, disc

closely, moderately punctate, finely roughened outward to sides where the sculpture is a little coarser,

metasternal triangle transversely elongate, the very

fine, rough sculpture within extending out to sides

of sternum. First visible abdominal sternum strongly punctate with strong, deep posterior marginal

line, next three sterna finely fluted along anterior

margin, the last with fluting very long, half the

length of the sternum, surface of middle three
40 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

sterna closely, shallowly, setigerously, moderately

punctate, the 5th sternum much more finely punctate, all setae very short and not very conspicuous.

Pygidium with fine apical margin, eroded disc

finely scabrous. Anterior femora with perimarginal

groove, surface roughly punctate. Middle and hind

femora with scattered, moderate, finely setigerous

punctures, posterior marginal line fine, complete.

Posterior tibial apical fringe of seven setae, longer

at each side, without accessory spine. Long spur,

first posterior tarsal segment, and following three

segments combined about equal in length.

TYPE.—USNM 71740.

TYPE-LOCALITY.—"San Berdino [Bernardino]

County, California. Collection Coquillett." The

pin also bears the numbers 1804 and 3320, the

meanings of which are unknown.

SPECIMENS EXAMINED.—The unique holotype.

DATE COLLECTED.—Unknown.

DISTRIBUTION.—See Figure 5.

REMARKS.—This species—named in honor of Dr.

Edwin C. Van Dyke, a former well-known California coleopterist—is quite unique among

Ataenius of United States and Canada. It is the

only species having such rough, tuberculate elytral

intervals; and the holotype (probably a female)

is unusual in being almost bicolored, probably

not the usual coloration. The hind tarsi were accidentally broken and lost after the description had

been written.

22. Ataenius confertus Fall

Ataenius confertus Fall, 1909:162.

Ataenius cribratus Van Dyke, 1928:156. [New synonymy.]

DESCRIPTION.—Length 4.0 to 4.8 mm; width 1.8

to 2.0 mm. Dark reddish brown, elongate-oblong,

moderately shining, convex. Head moderately convex, shining anteriorly, dull basally; clypeus

sharply, triangularly dentate each side of wide,

moderately deep emargination, sides arcuate to

right-angled genae, margin finely reflexed; anterior

surface and up over greatest convexity strongly,

transversely rugose-tuberculate, mixing gradually

with dense, very moderate punctures, frontal basal

area densely, more coarsely punctate, the punctures

contiguous, deep, alutaceous within. Pronotum

convex, lateral margins hidden from directly above,

about one-third wider than long, sides slightly

arcuate, anterior angles obtuse, hind angles very

broadly rounded sides to base, sides and base finely

margined, finely crenate, marginal setae short and

close, separated by a trifle more than their own

length; surface densely, moderately coarsely punctate, the punctures practically contiguous and same

size as occipital punctures of head. Elytra one-half

longer than wide, humeri dentate, striae moderate,

finely punctate, intervals convex, strongly crenate

along inner margin, cutting into a row of close,

moderate punctures, a row of similar closely placed

punctures along outside margin, the punctures of

the outside row separated by their own diameters

or less, those of the inner side not as close, sutural

interval with a single row, all but the sutural

row become obscure over apical elytral declivity, laterally the intervals become alutaceous, the outside

row of punctures moves up to the center of the

convexity and produces a rough, confused surface;

all of the dorsal coarse punctures of head, pronotum, and outside rows of the intervals are finely

setigerous, the setae extremely short on the head,

very gradually more noticeable posteriorly over the

elytra. Underside shining, coarsely, setigerously

punctate throughout, the setae extremely short.

Metasternal midline fine, moderately deep, discal

punctures coarse, separated by their own diameter

which is greater than width of midline, punctures

outward to sides larger, shallow, masked over outer

fourth by alutaceous sculpture, metasternal triangle moderately deep, not sharply delimited,

roughly alutaceous within. Abdominal sterna

everywhere coarsely, closely punctate, separated at

middle by their diameter or less, shallower, coalescing and masked by alutaceous sculpture at lateral

margin; anterior margin closely fluted, the fluting

slightly longer on each succeeding sternum posteriorly, fluting nearly half the length of the 5th

sternum. Eroded area of pygidium extensive but

not depressed, smooth apical margin very narrow.

Anterior femora with perimarginal groove, surface

coarsely, roughly, closely punctate. Middle and

hind femora coarsely but not as closely punctate,

punctures of hind femora less close and separated

generally by more than their diameters, posterior

femoral lines short, about one-fourth the distance

from knee to trochanter. Posterior tibia without

accessory spine, fringe of eight or nine coarse

setae. Hind tarsus shorter than tibia, first tarsal

segment slightly shorter than long spur, slightly
NUMBER 154

longer than following three segments combined.

The female pygidium is much wider than in the

male.

NEOTYPE (present designation).—In California

Academy of Sciences.

TYPE-LOCALITY.—5 mi W of San Bartolo, Lower

California. Collected by Michelbacher and Ross,

13 July 1938. (Neotype.)

SPECIMENS EXAMINED.—107.

DATES COLLECTED.—June 24 to September 27.

DISTRIBUTION (Figure 11).—Arizona: Brown Canyon (Baboquivari Mts.), Bear Valley Ranch

(Santa Cruz County), Chiricahua Mts., Cochise

Stronghold (Dragoon Mts.), Douglas, Globe, Kits

Peak Rincon (Baboquivari Mts.), Madera Canyon,

Nogales, Patagonia, Pena Blanca (Santa Cruz

County), Sabino Canyon, foothills Santa Catalina

Mts., Texas Pass, Tucson, Wilcox. New Mexico:

Las Cruces.

REMARKS.—Type of Ataenius confertus, a unique

specimen from San Jose del Cabo, Baja California;

type of A. cribratus Van Dyke, San Xavier Mission,

near Tucson, Arizona. Dr. Fall (1909:163) stated

the type of A. confertus was in the California

Academy of Sciences collection; however, neither

this nor the types of other species mentioned in

the same paper are now in that collection. In the

same paper Fall (1909:161) states "these descriptions were written some eight or nine years ago,"

in other words about the year 1900, and since none

of the types can now be found it is quite possible,

according to Mr. Hugh B. Leech, that the lot had

been received but not accessioned before the great

earthquake and fire in 1906, and that they were

lost in that catastrophe. Since the type is not in

the Fall collection it is presumably lost. The nearest locality represented at present is San Bartolo,

about 50 miles north of San Jose del Cabo. The

Museum of Comparative Zoology has a series of

specimens from Tucson, Arizona, determined by

Dr. Fall as being A. confertus.

23. Ataenius saramari Cartwright

Ataenius saramari Cartwright, 1939:360.

DESCRIPTION.—Length 3.0 to 3.2 mm; width 1.4

to 1.5 mm. Oblong-ovate, convex, piceous, shining.

Head convex, clypeal margin very finely reflexed,

with just a trace of angulation each side of a mod41

erately deep median emargination, sides moderately arcuate to obtusely rounded genae, the genae

with three or four noticeable lateral setae; surface

of clypeus weakly concave near margin, especially

behind median emargination, also a vague shallow

depression each side at about anterior fourth in

most specimens, surface otherwise with scattered

minute to very fine punctures generally separated

by two to four times their diameters, front and

occiput with widely scattered, moderate punctures

from side to side. Pronotum convex, sides partly

invisible from directly above, about 1.2 mm wide

and 0.8 mm long, angles obtusely rounded, sides

and base margined, edge fimbriate-crenate, the

setae club-shaped, their length rather short, about

twice the diameter of largest pronotal punctures,

usually separated by more than their length, crenations inconspicuous except at posterior angles;

surface quite evenly punctate with mixed variable

punctures, fine to coarse, those over anterior disc

generally smaller than elsewhere. Elytra convex,

oval, 1.9 mm long and 1.4 mm wide, humeri very

finely dentate, elytral striae strong and deep, strial

punctures deep, separated by three-fourths the

width of the intervals, slightly crenating the weakly

convex intervals, some scattered, very fine punctures which are more noticeable on lateral intervals and over the apical declivity where the

intervals become narrow and convex, the striae

wider; edge of elytra fimbriate-crenate with noticeable setae quite similar to the pronotal fringe.

Mesosternum as usual with fine sculpture and very

fine, short, decumbent hair, sharply carinate between the coxae. Metasternum shining, strong

deep midline, a few scattered, fine punctures,

punctate-rugose at extreme sides, an eroded line

anteriorly around the middle coxae, metasternal

triangle deep, elongate, scabrous within. First abdominal sternum with posterior marginal line, the

following four sterna finely fluted along anterior

margin, the fluting becoming longer at the sides

on middle three sterna and longer at middle on

the 5th, surface punctate, scattered and finer at

middle, close and coarser at sides. Disc of pygidium

roughly eroded. Anterior femora with perimarginal

groove, smooth anteriorly, rough posteriorly.

Middle and hind femora smooth, shining, two or

three coarse setigerous punctures at knee, posterior

marginal lines strong, complete. Ten short, close,

equal setae in apical fringe of hind tibiae, without
42 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 11.—Distribution of Ataenius confertus Fall, A. ovatulus Horn, A. utahensis, new species,

and A. griffini, new species.

•*• confertus • ovatulus • utahensis O griffini

accessory spine. Metatarsus and long spur equal,

slightly longer than next three tarsal segments

combined. In the male the penultimate abdominal

sternum is about two-thirds as long as the preceding sternum and the pygidium is relatively longer.

The 5th abdominal sternum and the pygidium

have a transverse row of stiff moderate setae, those

of the 5th sternum a little longer than those of

the elytral fringe, those of the pygidium finer and

still longer.

HOLOTYPE.—Male, USNM 53423.

TYPE-LOCALITY.—St. Cloud, Florida. (Collected

in Geomys burrow.)

SPECIMENS EXAMINED.—Six.

DATES COLLECTED.—July 17 to September 12.

DISTRIBUTION (Figure 12).—Florida: Near Alligator Lake (Osceola County), Juniper Springs

(Marion County), Wiersdale (Marion County).

REMARKS.—This is one of the few species having

fimbriate elytral margins. Its small size, oval shape,

transverse row of stiff setae on the 5th abdominal

sternum, and concave margin of the clypeus help

distinguish it from other species. All known specimens have been collected in Florida, most of them

under leaf debris of Pinus clausa.

24. Ataenius convexus Robinson

Ataenius convexus Robinson, 1940:149.

DESCRIPTION.—Holotype: Length 3.2 mm; width

1.5 mm. Dark red-brown, shining, convex, oblongoval. Antennae testaceous. Head convex, clypeus

rounded and slightly angulate but not distinctly

dentate each side of deep median emargination,

sides weakly arcuate to right-angled genae, margin

very finely reflexed, arched upward at middle leaving a flat, closely, minutely punctate surface between the two edges; entire head surface smooth

except for very fine, uniformly distributed punc-
NUMBER 154 43

FIGURE 12.—Distribution of Ataenius abditus Haldeman, A. desertus Horn,

A. saramari Cartwright, and A. woodruffi, new species.

•k abditus • desertus o saramari D woodruffi

tures throughout, the punctures separated by about

three times their diameters. Pronotum convex, the

side margins invisible from directly above, about

one-third wider than long, anterior angles obtuse,

hind angles not widely rounded, sides and base

strongly margined, very weakly crenate, marginal

setae conspicuous but moderate, generally separated by about their own length; surface with

mixed coarse and fine punctures, coarse punctures

irregularly spaced, separated by less than their

diameter to less than twice their diameter, lacking

over anterior fourth at middle. Elytra convex,

oval, one-fourth longer than wide, humeri finely

dentate; striae fine, fine punctures weakly crenating

the strongly convex intervals, intervals have a

median row of minute punctures, lateral intervals

not different; lateral and apical elytral margins

noticeably fimbriate, the setae about as long as

those of the pronotum but generally separated by

twice their length. Mesosternum finely carinate

between the coxae. Metasternum with fine, moderately deep midline, disc smooth but with minute

sculpture of scattered punctures and alutaceous

surface, a few scattered, coarse, shallow punctures

at sides, metasternal triangle deep and elongate.

Abdominal sterna smooth and shining but with

scattered, minute punctures at sides, fluted along

anterior margins as usual, the fluting of the 5th

sternum deep and at middle about half the length

of the sternum, the 5th sternum with a row of

coarse, shallow, contiguous punctures bearing long,

conspicuous hairs. Eroded area of pygidium strongly alutaceous and roughened by similar hairbearing coarse punctures. Anterior femora with

perimarginal groove, smooth shiny surface. Middle

and hind femora similarly smooth but with two

moderate, setigerous punctures at knee, middle

femora with a single, strong marginal seta at

middle, posterior femoral line absent. Posterior

tibial fringe of six setae, strong accessory spine

and intervening seta between accessory spine and

spurs. Hind tarsus shorter than tibia, first tarsal
44 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

segment slightly shorter than long spur, longer

than following three segments combined.

HOLOTYPE.—Robinson Collection, USNM 65614.

TYPE-LOCALITY.—Hidalgo, Texas.

SPECIMENS EXAMINED.—Seven.

DATES COLLECTED.—April 24 to August 16.

DISTRIBUTION (Figure 5).—Texas: Big Bend National Park, Corpus Christi, Hidalgo, San Diego.

REMARKS.—Two of the Corpus Christi specimens

were collected by Charles W. Griffin in nests of

wood rats, probably Neotoma micropus micropus

Baird. Another was taken in an armadillo burrow.

One of the Robinson paratypes of A. convexus,

with Texas state label only, from the collection

of Charles Schaeffer and labeled as new by him,

is not A. convexus but a species very close to it

that is described in this paper as A. griffini, new

species. The genitalia of the two species are different.

Ataenins convexus varies in length from 3.1 mm

to 4.2 mm, with the larger specimens being from

Big Bend National Park. The pygidium is longer

in the male than in the female.

25. Ataenius lobatus Horn

PLATE $b

Ataenius lobatus Horn, 1871:287.

Ataenius laeviventris Horn, 1887:74.—Cartwright, 1951:29.

DESCRIPTION.—Length 4.9 to 5.8 mm; width 2.2

to 2.6 mm. Oblong-elongate, dark red-brown to

piceous, shining, moderately convex, antennae

light yellow. Head convex, clypeus rounded each

side of wide, moderately deep, median emargination, or in freshly emerged specimen the reflexed

margin high and forming a low, wide, triangular

angulation or tooth each side of emargination,

finely reflexed sides weakly arcuate to sharply

rounded right-angled genae; surface of anterior

half of clypeus transversely wrinkled, finely punctate above greatest convexity, the punctures separated by their diameters, frontal area with close,

moderate-to-coarse punctures. Pronotum convex,

averaging about 2.0 mm wide by 1.5 mm long, all

angles broadly rounded, strongly lobed basally,

sides and base margined, crenate, fimbriate, the

setae moderately long, separated by less than their

length, longest at anterior angles, very gradually

diminishing in length to near the basal lobe then

suddenly becoming longer opposite the scutellum,

surface with evenly distributed, very fine punctures mixed with less evenly distributed coarse

punctures which are less numerous over central

disc then closer and more numerous halfway to

sides. Elytra about 3.6 mm long by 2.3 mm wide,

humeri finely dentate, sides weakly arcuate; striae

fine, not deep, very fine strial punctures very

weakly crenating inner margins of the very moderately convex intervals, striae much wider, deeper

with much longer, deeper strial punctures over the

apical declivity, the intervals here more noticeably

convex, intervals with minute, scattered punctures,

lateral intervals not differing from the others.

Mesosternum shagreened with fine alutaceous

sculpture and short, fine, appressed hair, weakly

carinate between the coxae. Metasternum everywhere smooth and shining, midline fine, shallow,

deeper at ends, disc and outward to sides minutely

punctate, the punctures usually separated by three

or four times their diameters, slightly roughened

at extreme sides. Abdominal sterna smooth and

shining but with scattered, minute punctures from

side to side, slightly larger and very shallow near

sides, a few of them setigerous, the setae moderately

long and appressed, sterna fluted along anterior

margin, deeper and one-third the length of the

5th sternum. Pygidium with smooth apical lip,

disc deeply eroded with rough, tuberculate, alutaceous sculpture. Anterior femora with perimarginal

groove, surface smooth, shining, with rather widely

scattered, very fine punctures. Middle and hind

femora surface as in anterior femora but with

three or four coarse setigerous punctures at the

knee, the setae long and conspicuous, posterior

marginal lines about three-fourths the length of

the femora but not sharply defined and best seen

from the rear. Posterior trochanters with two conspicuous setae. Posterior tibial apical fringe of five

fine setae, a very strong accessory spine, and a

single seta between accessory spine and the spurs;

long spur longer than first tarsal segment which

equals the length of the following three segments

combined. In the male the 4th abdominal sternum

is shorter at middle, the 5th sternum is shorter,

and the pygidium is longer than in the female.

HOLOTYPE.—Academy of Natural Sciences of

Philadelphia, No. 3614.

TYPE-LOCALITY.—"Peninsula of Lower California."
NUMBER 154 45

SPECIMENS EXAMINED.—29.

DATES COLLECTED.—July 26 to October 4.

DISTRIBUTION (Figure 13).—Arizona: Arlington,

Catalina Mts. (Pima County), Fort Yuma, 36 mi

E of Gila Bend, Hope, Marijilda Canyon (Graham

Mts.), Organ Pipe Cactus National Monument

(Pima County), Phoenix, Sabino Canyon, Tucson.

California: Blythe, Gila Bend, La Puerta (Imperial

County), Maricopa County. Nevada: Las Vegas, 30

mi NW of Logandale. Mexico: Baja California:

Purissima, San Jose" del Cabo, Santa Rosa.

REMARKS.—The color, size, distribution, and

especially the very strongly lobed pronotum distinguish A. lobatus Horn.

26. Ataenius cylindrus Horn

Ataenius cylindrus Horn, 1871:289; 1875:142.

Ataenius horni Harold, 1874a:19.

Ataenius cylindricus Schmidt, 1922:454.

DESCRIPTION.—Length 3.3 to 4 mm; width 1.2

to 1.8 mm. Oblong, convex, black, moderately

shining. Head convex; clypeus sharply dentate each

side of moderately broad, moderately deep, triangular emargination, sides weakly arcuate to

nearly right-angled genae, edge finely reflexed;

surface concave behind emargination, elsewhere

convex and finely, closely, evenly punctate; front

and occipital area densely, moderately punctate,

the practically contiguous punctures twice the size

of the clypeal punctures. Pronotum convex, the

sides not completely visible viewed from directly

above, about one-fourth wider than long, anterior

angles obtusely rounded, posterior angles slightly

emarginate, sides and base margined, posterior

angles and base distinctly crenate-fimbriate, the

setae separated by more than their length, those

of the sides anteriorly extremely short and inconspicuous, surface densely, shallowly, moderately

punctate throughout, the punctures minutely

setigerous and general surface minutely alutaceous

under high magnification, punctures gradually a

little finer anteriorly at middle. Elytra elongateoval, humeri dentate, one-third longer than wide,

margin without noticeable setae; elytral striae

wide, deep, rather coarsely punctate, the punctures

slightly crenating the inner side of the intervals,

intervals usually subcarinately convex with a minutely alutaceous, more or less distinct shoulder

each side of the middle convexity, each interval

with two rows of widely spaced, minute punctures,

the inside row high up on the shoulder or over

the middle of the convexity, the outside row about

the middle of the shoulder, extreme lateral interval

flat and finely alutaceous. Mesosternum narrowly

carinate between the coxae. Metasternum with

strong, deep midline, disc with numerous moderate

punctures generally separated by their diameters

or two times their diameters, the punctures extending outward to the wide, scabrous surface at

sides, the scabrous area extending into the metasternal triangle; abdominal sterna finely punctate

from side to side, the punctures generally separated

by their diameters or two times their diameters,

a little finer at middle; sterna fluted anteriorly as

usual, the middle fluting of the 5th sternum about

one-half its total length; pygidium longer in the

male, the median area eroded as usual. Anterior

femur with perimarginal groove, punctate and

shining along anterior margin, remainder of surface scabrous. Middle and posterior femora punctate throughout, the punctures a little finer and

closer than on disc of metasternum, postfemoral

lines deep and entire. Posterior tibial fringe a

group of seven or eight short, close setae, a short

accessory spine of same length, and an intervening

seta between the accessory spine and spurs. Long

spur, first posterior tarsal segment, and the three

following segments combined are about equal in

length.

LECTOTYPE (present designation).—Academy of

Natural Sciences of Philadelphia, No. 3605.

TYPE-LOCALITY.—Florida. Original description

also mentions South Carolina and Georgia.

SPECIMENS EXAMINED.—450+ .

DATES COLLECTED.—January 28 to November 6.

DISTRIBUTION (Figure 14).—Alabama: Auburn,

near Helena, Mobile, Monroeville, Montgomery,

Selma, Spring Hill, Storrsland. District of Columbia. Florida: Alachua County, Archbold Biological

Station (Lake Placid), Buck Key, Capron, Centerville, Clewiston, Crescent City, Dunedin, Dunnellon, Enterprise, Fort Lauderdale, Fort Myers, Fort

Ogden, Gainesville, Goldhead, Haw Creek, Highlands Hammock State Park, Jacksonville, Jungle

Road (Taylor County), Jupiter, Kissimmee, Korishan State Park, La Belle, Lacooche, Lake Harney,

Lake Letta, Lake Wales, Levy County, Marion

County, Mclntosh, Miami, Moore Haven, Myakka

River State Park, Ocala, Oneco (Manatee County),
46

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 13 Distribution of Ataenius lobatus Horn, A. languidus Schmidt, A, glaseri, new species,

and A. robustus Horn,

o lobatus O languidus • glaseri it robustus

Pablo Beach, Palatka, Pensacola, Punta Gorda,

Sanford, Sarasota, Tallahassee, Tampa, Winter

Park. Georgia: Beach ton, Demarest, Hazelhurst,

Hinesville, Milner, Nashville, Okefenokee Swamp,

Pine Mt., Prattsburg, Tifton, Ware County (S. L.

Walker State Park), Waycross. Kentucky: Wolf

Creek Lake (Wayne County). Louisiana: Covington.

Mainland: "Maryland," Pocomoke Swamp. Af«-

sissippi: Camp Shelby, George County, Gulfport,

Horn Island. New Jersey: Martha. North Carolina:

Carthage, Southern Pines, Swan Quarter, Tryon.

Pennsylvania: "Pennsylvania." South Carolina:

Beaufort, Berkeley County, Blackville, Blaney,

Cameron, Cayce, Charleston, Clemson, Colleton

County, Columbia, Congaree, Edisto Island, Florence, Folly Beach, Georgetown County, Hampton,

Ton Swamp, Lugoff, Marion, Moncks Corner,

Mount Pleasant, Oconee CCC Camp, Orangeburg,

Pelion, Pontiac, Pritchardville, Ritter, Seabrooks

Island, Summerville, Sumter, Walterboro, White

Pond, Williamsburg County, Yemassee, York County (Route 91 at Chester County line). Tennessee:

"Tennessee." Texas: Willis. Virginia: Accomac,

Arlington, Camp Picket, Chatham, Fort Monroe,

Nelson County, Virginia Beach.

REMARKS.—Occasionally the elytral intervals do

not show the flattened shoulders and the intervals

appear evenly convex. In such cases the sharply

dentate clypeus with the concave surface behind

the emargination, the emarginate posterior angles,

and the close even punctation of the pronotum

together with locality data should suffice for accurate determination.

I have frequently taken this species under quite

old cow dung. It is not usually found under fresh

dung but seems to prefer the ground surface under

dung almost completely dry. It has been collected

in every month except December. The earliest

record is 28 January at Miami and the latest is

6 November in Oconee County, South Carolina.
NUMBER 154 47

FIGURE 14.—Distribution of Ataenius cognatus (LeConte) and A. cylindrus Horn.

•*• cognatus • cylindrus

27. Ataenius oklahomensis Brown

Ataenius oklahomensis Brown, 1930:4.

DESCRIPTION.—Length 3.5 to 4.4 mm; width 1.6

to 1.8 mm. Oblong, subparallel, convex, shining,

black, sometimes anterior of clypeus and legs reddish. Head convex, clypeus with small, sharp, triangular tooth each side of moderately deep emargination, sides narrowly reflexed, slightly arcuate

to nearly right-angled genae; surface strongly shining, narrowly, transversely wrinkled and concave

behind median emargination; smooth, minutely,

closely punctate over convex disc, then gradually

finely, closely punctate, separated by their diameter

or less, to base of clypeus; punctures still larger

but moderate across frontal-basal area of head.

Pronotum convex, averaging about 1.2 mm long

by 1.7 mm wide, anterior angles obtusely rounded,

sides nearly straight, posterior angles slightly excised, base arcuate, sides and base margined,

crenate-fimbriate, the setae very short, the crenations and setae most conspicuous at posterior

angles; surface with mixed very fine and moderately coarse punctures, coarse punctures a little

smaller, scattered and not as close over middle of

anterior disc, coarser and much closer, practically

contiguous beginning midway and outward to

sides. Elytra convex, 2.3 to 2.8 mm in length and

1.6 to 1.8 mm in width, sides arcuate, striae moderate, strial punctures deep, separated by three or

four times their diameter, crenating inner margins

of weakly to moderately convex intervals, disc with

a row of minute punctures along each side of the

interval, the striae become wider, the intervals

strongly convex and eroded each side (over the

apical declivity), the humeri peculiarly doubly

dentate with a strong, noticeable tooth at basal

end of the 7th intervals. Mesosternum shagreened

as usual with very fine, alutaceous sculpture and

very fine, short, appressed hair; strongly carinate

between the coxae. Metasternum shining, midline

strong and deep, disc and part way to sides with
48

close punctures variable in size from fine to coarse,

roughly scabrous at sides, deep, well-defined metasternal triangle finely alutaceous.. First visible abdominal sternum with a deep posterior marginal

line, remaining four visible sterna fluted along

anterior margin, the fluting gradually longer on

each segment with flutings of 5th sternum half

as long as the sternum, all sterna closely, moderately punctate between scabrous areas at sides,

pygidium convex at apex, gradually concave at

base, the surface rough and alutaceous, apical lip

very narrow and inconspicuous. Anterior femora

with perimarginal groove, surface rough except

for small, smooth spaces in inner anterior angle.

Middle femora closely, finely punctate, two or

three larger setigerous punctures at knee, a complete, strong posterior marginal line. Posterior

femora with finer, more scattered punctures, two

or three coarser punctures at base, strong, complete posterior marginal line. Posterior apical tibial

fringe of six short setae, a strong accessory spine

with an intervening seta between spine and spurs.

First posterior tarsal segment one-fifth longer than

the long spur and about same length longer than

the following three segments combined. Males with

4th abdominal sternum much shorter at middle

and the pygidium relatively longer than in the

female.

HOLOTYPE.—Canadian National Collection, No.

3038.

TYPE-LOCALITY.—Payne County, Oklahoma.

SPECIMENS EXAMINED.—Eleven.

DATES COLLECTED.—September 5 to October 20.

DISTRIBUTION (Figure 6).—Arkansas: Washington County. Oklahoma: Cleveland County, Mangum, Payne County, Willis. Texas: Harrisburg.

REMARKS.—The doubly dentate humeri are unusual in this uncommon species. See remarks following A. ovatulus Horn.

28. Ataenius ovatulus Horn

Ataenius ovatulus Horn, 1871:286; 1875:142, 1887:78—

Schmidt, 1922:431.

Ataenius lecontei Harold, 1874a:2O—Horn, 1875:142.—

Schmidt, 1922:447.—Robinson, 1948:177.

Ataenius cylindrus Horn, 1875:142 [not Horn, 1871:289].

DESCRIPTION.—Length 3.0 to 4.0 mm; width 1.4

to 1.7 mm. Elongate-oval, convex, shining, dark

reddish brown to piceous, anterior margin of clypSMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

eus and legs usually reddish brown. Head convex,

clypeus with small, sharp, triangular tooth each

side of a wide, moderate, median emargination,

margin very finely reflexed, sides arcuate to sharply

rounded, right-angled genae; surface slightly

wrinkled, narrowly concave behind median emargination, apparently smooth but actually minutely

punctate, more noticeably so toward sides where

they are very fine and separated generally by their

own diameters; punctures of frontal-occipital area

gradually minute to very moderate, separated by

their own diameters or less. Pronotum convex,

averaging about 1.5 mm wide by 1.1 mm long,

sides and base margined, very finely fimbriatecrenate, setae fine, short, inconspicuous, crenations

noticeable at slightly emarginate hind angles, base

evenly arcuate, anterior angles obtusely rounded;

surface with mixed minute and moderately coarse

punctures, discal coarse punctures irregularly

spaced from less than one to four or more diameters, close to dense over outer third, the coarse

punctures in area of lateral fovea variable in size,

some twice the size of others. Elytra convex, ovate,

averaging about 1.6 mm wide by 2.3 mm long, sides

arcuate, 7th interval with distinct tooth basally,

making the humeri doubly dentate, elytral striae

moderately wide and deep, deep punctures separated by four or five times their diameter, crenating inner margins of the moderately convex

intervals, lateral intervals 7, 8, and 9 subcarinately

convex, 10th flat and alutaceous, over apical fourth

or less the interval becomes strongly convex to

subcarinate, sometimes slightly eroded each side,

intervals with some very minute punctures under

high magnification. Mesosternum shagreened with

fine, alutaceous sculpture and fine, short, decumbent setae, sharply carinate between coxae. Metasternum shining, midline deep, disc and halfway

to sides with scattered, mixed fine to moderately

coarse punctures, generally separated by one diameter or less, a fine, eroded curving line close around

middle coxae, sides and metasternal triangle roughly scabriculate-alutaceous. Abdominal sterna frequently transversely convex, first visible sternum

with posterior marginal line, remaining four sterna

fluted along anterior margin, the fluting progressively longer posteriorly, those of 5th sternum half

the total length, sterna quite closely punctate from

side to side, punctures separated generally by one

or two times their diameters, very moderate in
NUMBER 154

size over anterior sterna and finer posteriorly, a

little scabrous sculpture at extreme sides. Pygidium

with narrow, smooth apical lip, disc scabrous.

Anterior femora with perimarginal groove, narrowly smooth anteriorly, disc finely scabrous.

Middle femora finely punctate near trochanter,

gradually coarser, finely, minutely setigerous and

closer outward, two or three longer setae at knee,

posterior marginal line strong and complete. Hind

femora with scattered, fine punctures, three or

four coarse setigerous punctures at knee, posterior

marginal line deep and entire. Posterior tibial

fringe of six or seven short, close setae, a short

accessory spine and an intervening seta between

the spine and spurs. First posterior tarsal segment

about one-fifth longer than the long spur, following three segments combined shorter than the long

spur. Males have 4th abdominal sternum greatly

shortened at middle to half the length of the preceding sternum, pygidium comparatively longer

than in female.

LECTOTYPE (present designation).—Type No.

3611 in Horn Collection, Philadelphia Academy

of Natural Sciences.

TYPE-LOCALITY.—Louisiana.

SPECIMENS EXAMINED.—260+.

DATES COLLECTED.—January 18 to October 2.

DISTRIBUTION (Figure 11).—Alabama: Chickasaw,

Langdale. Arkansas: "Arkansas." District of Columbia. Florida: Crescent City, Gainesville, Highlands, Jacksonville, Sopchoppy (Wachula County),

Tall Timbers Research Station, Wilcox (Gilchrist

County). Georgia: Athens, Atlanta, Currahee Mtn.,

Jekyll Island, Milner. Illinois: Grant City State

Park, Herod. Kentucky: Natural Bridge. Louisiana:

New Iberia. Maryland: Anne Arundel County (S.

I. Java Farm), Flag Pond (3 mi S Kenwood Beach),

Piney Point, Plummers Island, Takoma Park.

Mississippi: Starkeville, Vicksburg. North Carolina:

Highlands, Pisgah Forest, Raleigh, Southern Pines.

South Carolina: Aiken, Allendale County, Anderson County, Bishopville, Blaney, Brook Green,

Bulls Island, Cayce, Charleston, Chester, Clemson,

Columbia, Combahee River (Beaufort County),

Edgefield, Fairfax, Florence, Green Pond, Greenville, Hartsville, Jenkinsville, Kline, Liberty, Marion, North Augusta, Pickens County, Pinnacle

Mtn., River Falls, St. Andrews Church, St. Matthews, Saluda County, Sandy Springs, Sassafras

Mtn., Six Mile, Summerville, Tigerville, Union

49

County, Yemassee. Tennessee: Athens (McMinn

County). Texas: Avery, Dallas. Virginia: Belvoir

(Fauquier County), Falls Church, Fort Monroe,

Norfolk.

REMARKS.—Ataenius ovatulus Horn and A. oklahomensis Brown are very closely related. In A.

oklahomensis the pronotum is densely, uniformly

punctate over the outer third and the posterior

angles of the pronotum are distinctly excised or

emarginate with the base slightly sinuate; the

elytral intervals are strongly convex to subcarinate

over the posterior third, with the sides of the intervals here noticeably eroded and alutaceous.

Ataenius ovatulus is closely but not densely, not

uniformly punctate over outer third, the posterior

angles of the pronotum weakly or not excised,

base not sinuate or very inconspicuouly so; elytral

intervals convex over apical fourth or less, not

noticeably eroded or alutaceous though sometimes

slightly so. Both species have doubly dentate

humeri.

Ataenius ovatulus is rarely if ever attracted to

lights. Jerath (1960:74) described the larva.

I have examined the holotype of Ataenius lecontei Harold now in the Germar collection in the

Museum fur Naturkunde, Berlin, Deutsche Demokratische Republik. It is labeled "Carolina, Zimmermann." Many of Zimmerman's specimens were

collected near Charleston, South Carolina.

29. Ataenius desertus Horn

Ataenius desertus Horn, 1871:289; 1887:72. Schmidt, 1922:

453.

DESCRIPTION.—Length 3.3 to 4.7 mm; width 1.5

to 2 mm. Oblong, castaneous, shining. Head strongly convex; clypeus with strong, sharp, triangular

teeth each side of moderately deep, median, anterior emargination, sides arcuate to nearly rightangled genae, edge finely reflexed; surface

transversely granulate-rugose, front and occipital

area with close punctures of very moderate size

separated generally by about their own diameters.

Pronotum convex, one-third wider than long, anterior angles obtuse, posterior angles broadly,

evenly rounded from middle of sides, strongly

margined laterally and basally, fimbriate, crenate,

the setae moderate in length, separated by their

own length or less; surface with mixed coarse and

fine punctures throughout, the coarse punctures
50 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

shallow, numerous, irregularly spaced from contiguous to four times their diameter, a little less

numerous at middle and a little smaller anteriorly.

Elytra convex, elongate-oval, about one-third longer

than wide, humeri finely dentate; elytral striae

fine, moderately deep, strial punctures fine, separated by four or five times their diameters, weakly

crenating the moderately convex intervals, intervals with scattered, very fine punctures generally

separated by four times their diameters, lateral

intervals not noticeably different. Mesosternum

with a broad, low carina between the coxae. Metasternum with fine midline gradually deeper and

wider at anterior end, disc very finely punctate,

the punctures evenly distributed, separated by four

times their diameters, a few vague indistinct moderate punctures at sides, metasternal triangle

smooth, shallow, not sharply defined. Abdominal

sterna with very shallow, indistinct, moderate

punctures from side to side, those at sides bearing

very fine, semierect hairs, somewhat reminiscent

of abdominal hairs of Ataenius languidus Harold

but more numerous and less regularly placed,

sterna finely fluted along anterior margin and

fluting gradually longer on successive segments,

flutings of 5th sternum deeper and half as long

as the sternum. Pygidium eroded as usual, the

apical lip shining, with a transverse row of ten

or more fine setigerous punctures, the setae or

hairs very fine and longer than the length of the

lip at middle. Anterior femur lacking posterior

marginal line, surface convex, shining, smooth,

but in some light with a few scattered, extremely

fine, short hairs. Middle and hind femora smooth

and shining, usually without or with only a very

short trace of postfemoral line at knee, three stout

bristles at knee. Posterior tibial fringe with a group

of four to six well-separated setae, a very short,

triangular accessory spine and one intervening seta

between accessory spine and the spurs; first tarsal

segment slightly shorter than the long spur and

shorter than following three segments combined.

TYPE.—Academy of Natural Sciences of Philadelphia, No. 3606.

TYPE-LOCALITY.—"Not rare in the desert regions around and to the eastward of Fort Yuma,

California."

SPECIMENS EXAMINED.—300.

DATES COLLECTED.—April 25 to August 24.

DISTRIBUTION (Figure 12).—Arizona: Agua Fria,

Ajo (15 mi S), Benson, Bisbee, Brown Canyon

(Baboquivari Mts.), Buckeye, Chiricahua Mts.,

Coconino County, Colossal Cave Park, Cutter

(Gila County), Douglas, Florence, Florida Canyon (Santa Rita Mts.), Fort Grant, Gila Bend,

Globe, Hope, Kits Peak Rincon (Baboquivari

Mts.), Liberty, Madera Canyon (Santa Rita Mts.),

Mesa (19 mi NE), Nogales, Oracle, Organ Pipe

Cactus Monument, Phoenix, Portal, Rimrock,

Roosevelt Lake, Sabino Canyon (Catalina Mts.),

Sacaton, Safford, Temple, Tucson, Wickenberg

(Maricopa County), Wilcox. California: Banneu

(San Diego County), Berkeley, Blythe, Desert Center,

Elsinore, Glamis (Imperial County), Ripley. Kansas: "Kansas." New Mexico: Deming, Granite Pass,

Hidalgo County, Las Cruces, Lordsburg, Magdalena, Rodeo (18 mi NE). Nevada: Logandale, Mercury, Mesquite. Texas: Big Bend National Park,

Brewster County, Dallas, El Paso, Lajitas, Pecos

(Reeves County). Utah: St. George.

REMARKS.—The dark red color, sharp, noticeable

clypeal teeth, mixed very coarse and fine pronotal

punctures, lack of posterior marginal line on the

anterior femora, anteriorly deepened midline of

the metasternum, and semierect hairs at sides of

the abdominal sterna distinguish Ataenius desertus

Horn.

30. Ataenius languidus Schmidt

Ataenius languidus Schmidt, 1910:31.

Ataenius linelli Cartwright, 1944:28. [New synonymy.]

DESCRIPTION.—Length 4.1 to 4.5 mm; width 1.8

to 2.0 mm. Oblong, moderately elongate, convex,

shining, dark reddish brown to piceous, legs usually

reddish, antennae pale yellow. Head moderately

convex, clypeus finely dentate each side of broad,

moderate median emargination, sides weakly

arcuate to obtusely rounded genae, edge finely reflexed; surface transversely wrinkled anteriorly,

above greatest convexity sparsely, very finely punctate, the punctures generally separated by about

four times their diameters, punctures slightly

larger in occipital area. Pronotum convex shining,

averaging about 1.7 mm wide by 1.2 mm long,

all angles obtusely rounded, sides weakly arcuate,

sides and base strongly margined, marginal setae

moderately long, separated by less than their

length, shorter around basal margin; surface with

mixed coarse and very fine punctures, the fine
NUMBER 154 51

punctures quite close and evenly distributed, the

coarse punctures very irregularly distributed, generally rather widely separated on disc and closer

laterally where they are separated by their diameter

or more. Elytra convex, averaging about 2.7 mm

long by 1.9 mm wide, sides slightly arcuate, humeri

finely dentate, striae moderately deep, strial punctures crenating inner sides of moderately convex

intervals, the latter with scattered, minute punctures, striae a little wider and intervals more convex over apical declivity, lateral intervals not

noticeably different. Mesosternum shagreened with

very fine, alutaceous sculpture and decumbent hair,

very weakly carinate between the coxae. Metasternum shining, midline strong, long, deeper at

each end, disc very smooth but with some extremely

minute punctures, occasionally with a few fine

punctures also, a small rugose area at extreme

sides, the metasternal triangle moderately deep but

not sharply defined. Abdominal sterna fluted along

anterior margin, smooth at middle, a transverse

row of three or four well-separated, coarse, shallow

setigerous punctures outward at sides, the setae

long, fine, conspicuous, recumbent on first two

sterna, semierect on last two. Pygidium finely but

roughly eroded over disc with up to eight or ten

scattered, fine, moderate setae. Anterior femora

with perimarginal grooves, surface smooth, shining, minutely punctulate. Middle and hind femora

similar but with three or four coarse setigerous

punctures at knee; middle femora with well-defined

posterior marginal groove half the length of the

femur, the posterior femora identical except that

the line or groove is indefinitely continued over

the other half. Posterior tibial fringe with four

or five setae, an accessory spine of about equal

length, and in intervening seta between the spine

and the spurs. First posterior tarsal segment slightly shorter than the long spur, equal to following

three segments combined. In the males the penultimate sternum is comparatively shorter at the

middle, the terminal also shorter, and the pygidium relatively longer than in the female.

HOLOTYPE.—In Riksmuseum, Stockholm.

TYPE-LOCALITY.—"S. Madre de Durango, Mexico."

SPECIMENS EXAMINED.—500+.

DATES COLLECTED.—May to July 13.

DISTRIBUTION (Figure 13).—Alabama: "Alabama." Florida: Coconut Grove, Dade County,

Knights Key (Monroe County), Lake Wales, Lake

Worth, Miami, West Palm Beach. Texas: "Texas."

REMARKS.—I also have seen this species from the

Bahama Islands, West Indies, and Mexico. The

conspicuous lateral rows of abdominal setae distinguish it from most other species.

31. Ataenius barberi, new species

DESCRIPTION.—Holotype: Length 4.0 mm; width

1.7 mm. Elongate, subparallel, black, the elytra

with slight reddish tinge, anterior margins of clypeus and pronotum and legs reddish; feebly shining, the elytra alutaceous, only moderately convex.

Head moderately convex; clypeal margin very finely

reflexed, sharply dentate each side of wide, shallow

median emargination, sides arcuate to obtusely

rounded genae; depressed anterior area behind

emargination wrinkled and more shining than remainder of head which is densely, moderately

punctate; clypeal punctures slightly finer anteriorly, tending laterally to become elongate, twice as

wide as long but not forming lines as in A. gracilis,

the punctures of the frontal and basal areas are

round and very dense across the base, practically

touching but remaining distinct. Pronotum 1.6 mm

wide by 1.0 mm long, sides weakly arcuate anteriorly, slightly sinuate at the broadly rounded

posterior angles; sides and base finely margined,

edge minutely crenate, anteriorly becoming increasingly and distinctly so posteriorly with an

extremely fine, short seta between the crenations

under high magnification; surface everywhere

densely, evenly, moderately punctate, the punctures

slightly finer at extreme anterior margin and noticeably shallower at sides, median longitudinal

line very vaguely indicated. Scutellum normal.

Elytra 2.7 mm long by 1.7 mm wide, humeri

strongly dentate, striae shining, deep, crenate

punctate; intervals subangularly, moderately convex, the ridge at outer third with a row of very

fine punctures, separated by about four times their

diameters, and more or less masked by fine alutaceous sculpture throughout; sutural interval with

row of close, very fine punctures, tenth interval

much flatter than others; under high magnification the punctures of the intervals over the apical

declivity become setigerous, showing median rows

of very fine, very short setae; the striae are somewhat wider apically also. Mesosternum carinate
52 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

between the coxae. Metasternum shining, midline

long, strong; discal area evenly, closely, rather

coarsely punctate, separated by about their diameter, finely scabriculate outward to sides, metasternal triangle large, well denned, scabriculate.

Abdominal sterna finely fluted in front, suture

between very deep and not longer at middle but

equally wide from side to side; punctate throughout as on disc of metasternum but 4th and 5th

sterna slightly shallower and minutely setigerous;

pygidium finely scabrous. Profemur with perimarginal groove, surface scabrous with close, coarse,

shallow, finely setigerous punctures and alutaceous

sculpture. Punctures of mesofemora and metafemora as on metasternum. Postfemoral line of

middle femur complete, strong, deep, and alutaceous. Postfemoral line of hind femur over onefourth distance from knee. Posterior tibial fringe

of eight close, short setae; without accessory

spine. First segment of posterior tarsus one-fourth

longer than long spur and longer than following

three segments combined. Hind tarsus shorter than

tibia.

HOLOTYPE.—USNM 71741.

TYPE-LOCALITY.—Arizona, Bright Angel, Colorado Canyon, 3500 ft, 13 July 1901, H. S. Barber.

SPECIMENS EXAMINED.—Seventeen.

DATES COLLECTED.—July 13-16.

DISTRIBUTION (Figure 9).—Para types. Arizona

(13): Colorado Canyon, 13 July, H. S. Barber

and E. A. Schwarz. Texas (3): Chisos Mountains,

16 July, J. W. Green.

REMARKS.—The specimens vary from 2.5 to 4.1

mm in length. Some show the punctures of the

metasternal disc gradually smaller posteriorly, and

in some the femoral punctures are a trifle smaller

than those of the metasternum, otherwise no differences were observed.

Ataenius barberi is reminiscent of A. abditus,

A. texanus, and A. scalptifrons Bates (1887:100);

however, it differs from the first two by the elongate clypeal punctures and in being broader, less

convex, and much more noticeably alutaceous. It

is much closer to A. scalptifrons, but that species,

in average, is smaller in size, is more convex, and

has much more noticeably ridged intervals.

The species is named after the late H. S. Barber,

one of the best field collectors and keenest observers I have ever known. E. A. Schwarz had

recognized this beetle as an undescribed species

and labeled it "n. sp." Paratypes will be deposited

in the collection of the California Academy of

Sciences.

32. Ataenius puncticollis (LeConte)

Euparia puncticollis LeConte, 1858:66.

Ataenius puncticollis.—Harold, in Gemminger and Harold,

1869:1067.—Horn, 1887:77.—Schmidt, 1922:434.—Cartwright. 1951:29.

Ataenius inops Horn. 1887:72 Schmidt, 1922:449.—Cartwright, 1951:29.

DESCRIPTION.—Length 3.1 to 4.2 mm; width 1.2

to 1.7 mm. Oblong, subparallel, moderately convex,

shining, dark red-brown, sometimes pronotum and

head darker. Head convex, edge finely reflexed,

clypeus sharply, triangularly dentate each side of

moderately deep median emargination, sides weakly arcuate, right-angled genae sharply rounded;

clypeal surface strongly, coarsely, transversely

wrinkled, a few close, minute punctures at base,

frontal and occipital area closely, very finely punctate. Pronotum convex, two-thirds as long as wide,

anterior angles obtusely rounded, posterior angles

broadly rounded, base slightly sinuate before middle, sides and base margined, very minutely crenatefimbriate; surface closely, evenly, very moderately

punctate throughout, punctures usually separated

by their diameters on disc, smaller and closer along

anterior margin. Elytra convex, about seven-tenths

as wide as long, humeri very finely, inconspicuously

dentate; striae fine, deep, strial punctures fine,

crenating inner margins of nearly flat intervals, a

row of close, very fine punctures along outside margin. Mesosternum shagreened with fine, alutaceous

sculpture and very fine, short, appressed hair,

carinate between the coxae. Metasternum smooth,

shining, disc with scattered, very minute punctures, midline fine, moderately deep, lateral scabrous area at sides extending inward almost to disc

where it breaks up into fine punctures close to

middle coxae, metasternal triangle slightly roughened in anterior angle. First visible abdominal

sternum with posterior marginal line, remaining

four sterna finely fluted along anterior margin,

surface very moderately punctate from side to side,

finer at middle, coarser toward sides where the

punctures are generally separated by their diameter

or less, finer and closer on 5th sternum. Pygidium

very finely punctate and convex at apex, concave
NUMBER 154 53

and eroded basally. Anterior femora with perimarginal groove, surface shining, some scattered,

very minute punctures. Middle femora smooth,

shining, posterior marginal line at knee a little

less than half femur length. Posterior femora similar but with a very short line at knee. Posterior

apical tibial fringe of eight short, close setae,

without accessory spine. First posterior tarsal segment short, enlarged apically and narrowed basally,

about three-fourths as long as long spur, a trifle

shorter than following three segments combined.

The males have the 4th sternum slightly shorter

at middle and the pygidium comparatively longer

than in the female.

HOLOTYPE.—Museum of Comparative Zoology,

No. 3731. (Type of A. inops Horn in Academy of

Sciences of Philadelphia, No. 3607.)

TYPE-LOCALITY.—El Paso, Texas. (A. inops,

Horn, "Arizona."

SPECIMENS EXAMINED.—456 + .

DATES COLLECTED.—January 25 to November 8.

DISTRIBUTION (Figure 7).—Arizona: Arivaca,

Blake Dike Project (Sierrita Mts.), Browns Canyon (Baboquivari Mts.), Carr Canyon (Huachuca

Mts.), Chiricahua Mts., Clifton, Cochise Stronghold (Dragoon Mts.), Colossal Cave Park, Continental (Pima County), Douglas, Florence, Fort

Grant, Fort Yuma, Gila Bend (Maricopa County),

Globe, Guadelupe Canyon (Cochise County), Hot

Springs, Kits Peak Rincon (Baboquivari Mts.),

Madera Canyon, Marjilda Canyon (Graham Mt.),

Mesa (19 mi NE, Maricopa County), Nogales,

Noon Creek Mt. (Graham County), Oracle, Organ

Pipe Cactus National Monument (Pima County),

Pajarita Mts., Palmerlee (Cochise County), Patagonia Mts., Pena Blanca, Piney Canyon (Chiricahua Mts.), Portal (Southwest Research Station),

Rimrock, Robles Ranch (20 mi SW of Tucson),

Sabino Canyon (Catalina Mts., Pima County), St.

Johns (Apache County), Santa Cruz County, Santa

Rita Mts., Santa Rosa Mts., San Xavier (near Tucson), Sycamore Canyon (Santa Cruz County),

Texas Pass, Tucson, Wickenberg, Wilcox, Williams. California: Napa County. Colorado: Rocky

Ford. Indiana: Marion County. New Mexico: Las

Cruces, Lordsburg, Mesilla Park, Rodeo (18 mi

N). Texas: Alpine, Austin, Big Bend National

Park, Cypress Mills, Davis Mts., Del Rio, El Paso,

Enchanted Rock, Fort Davis, Lajitas, Laredo,

Round Mts., Sanderson, Stockley, Terlingua Creek,

Victoria, Weslaco.

REMARKS.—Among United States species, Ataenius puncticollis is recognized by the clypeal teeth,

transverse coarse wrinkles covering practically the

entire clypeus, close, evenly spaced, moderate pronotal punctures, and the first segment of the short

posterior tarsus being much thicker apically than

at base. The holotype, badly worn and without

clypeal teeth, for many years was thought to be

distinct from A. inops Horn which has distinct

clypeal teeth. Comparison of the two showed them

to be the same species.

33. Ataenius nunenmacheri, new species

DESCRIPTION.—Holotype Male: Length 3.2 mm;

width 1.3 mm. Elongate, parallel, slender, dark

red-brown, shining, very moderately convex. Head

moderately convex; clypeal margin very finely reflexed, a small, sharp triangular tooth each side

of a moderate, angulate, median emargination,

sides weakly arcuate to right-angled genae; anterior

third of clypeus transversely rugose, the rugae

short, broken, and more or less tuberculate, remainder of head closely, finely, evenly punctate,

the punctures separated by less than their diameters. Pronotum quadrate, 1.2 mm wide by 0.9

mm long, anterior angles obtusely rounded, sides

straight over anterior three-fifths then arcuate to

posterior angles, sides and base finely margined,

very minutely fimbriate-crenate, evenly, densely,

finely punctate throughout, punctures generally

separated by their diameter, shallow, larger and

running together in the anterior angles, a trifle

smaller anteriorly, vaguely impressed midline.

Elytra 2.1 mm long and 1.3 mm wide, humeri very

finely dentate, striae moderately deep, strial punctures slightly crenating sides of very weakly convex intervals, outside margin of intervals with a

row of fine punctures, slightly more noticeable

on lateral intervals, the punctures of intervals 6,

7, and 8 separated by their diameter or less, 10th

interval flatter than 9th, intervals slightly more

convex over apical declivity. Mesosternum shagreened as usual, a strong, broad-based, elongatetriangular carina between the coxae. Metasternum

shining, midline unusually long, strong and deep,

disc and halfway to sides with fine and very moderate mixed punctures, finer posteriorly, scabrous

at sides, metasternal triangle small, deep, rough-
54

ened within. First visible abdominal sternum with

strong posterior marginal line, remaining sterna

finely fluted along anterior margin, those of the

5th sternum longer over middle half of total width

of segment, the fluting of this section about equal

in length so that anterior and posterior borders

are approximately parallel, surface of middle three

visible sterna otherwise closely, moderately punctate, a little closer and larger at extreme sides;

punctures of 5th sternum closer and smaller; pygidium with fine apical margin, roughened disc

convex apically, concave basally, slightly more than

one-fifth as long as wide. Anterior femora with

perimarginal groove, surface with about 30 scattered, fine to moderately coarse punctures, the

coarse punctures on outer posterior surface. Middle

and hind femora shining, with scattered fine punctures; middle femur with posterior marginal line

along outer third of total length, posterior femur

with barely a trace of marginal line at knee. Posterior tibial apical fringe of seven short setae,

without accessory spine. First posterior tarsal segment subequal to long spur and following three

segments combined.

Allotype Female: Length 3.2 mm; width 1.3 mm.

The only noticeable difference from the male is

the shorter pygidium, the length being about onefourth the width.

HOLOTYPE.—USNM 71742.

TYPE-LOCALITY.—Arizona.

SPECIMENS EXAMINED.—Sixteen.

DATES COLLECTED.—November.

DISTRIBUTION (Figure 15).—Paratypes. Holotype, allotype, and two paratypes bear identical

labels: "Arizona, A. Koebele, 18 November 1907."

In addition to the type series I have seen specimens from Mexico: 10 mi N of Culiacan, Sinaloa;

20 mi W of Compostila; and 2 mi E of Concordia,

Sinaloa.

REMARKS.—Ataenius nunenmacheri is probably

more closely similar to A. stroheckeri than any

other species but it is more slender than A. stroheckeri, has uniform punctures over upper clypeus

and front, the intervals are not as convex, the

lateral intervals are not as coarsely or roughly

punctate, the sides of the pronotum are less evenly

arcuate, and the fluting of the 5th abdominal

sternum is longer over the middle half.

The species is named in honor of F. W. Nunenmacher, from whom the four specimens in the

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

type-series were received many years ago.

34. Ataenius stroheckeri, new species

DESCRIPTION.—Holotype Male: Length 3.2 mm;

width 1.3 mm. Elongate, parallel, narrow, shining,

moderately convex, black, clypeal margin and legs

with reddish tinge. Head moderately convex, very

finely reflexed clypeal margin sharply, triangularly

dentate each side of wide, shallow median emargination, sides weakly arcuate to rounded slightly

more than right-angled genae; clypeus transversely

wrinkled over anterior half, closely, minutely punctate at middle, gradually very slightly larger laterally and basally, very gradually still larger and

closer over frontal area to base, forming a denser

transverse band of fine or very moderate punctures, extreme occiput less densely punctate. Pronotum quadrate, width 1.2 mm, length 0.9 mm,

the sides diverging very slightly from base to

obtusely rounded anterior angles, in lateral view

the sides are very evenly arcuate, sides and base

finely margined, minutely fimbriate, crenate under

moderate magnification; surface densely, evenly,

very moderately punctate throughout, the punctures a trifle finer anteriorly. Elytra 2.0 mm long

and 1.3 mm wide, humeri very finely dentate, striae

fine, deep, strial punctures slightly crenating inner

sides of the rather strongly convex intervals, outside margin of intervals with a row of closely

spaced punctures which become larger on the lateral intervals where their diameter nearly equals

the width of the striae and giving the last three

intervals a rough surface, the punctures along the

outside margins of intervals 7 and 8 separated by

their diameter or less, over the apical declivity

the striae become wider and the intervals more

convex. Mesosternum shagreened as usual, strongly

carinate between the coxae. Metasternum shining,

midline long, strong, and deep, a few fine punctures anteriorly, gradually becoming minute posteriorly, scabrous outward from disc to sides,

metasternal triangle deep with a little alutaceous

sculpture in anterior angle. First visible abdominal

sternum with posterior marginal line. Remaining

sterna fluted along anterior margin. Suture between 4th and 5th sterna deep, the fluting nearly

half the length of the 5th sternum at middle but

not especially long at middle. Fourth sternum at

middle about two-thirds as long as the preceding
NUMBER 154 55

FIGURE 15—Distribution of Ataenius spretulus (Haldeman) and A. nunenmacheri, new species.

• spretulus it nunenmacheri

sternum, 5th sternum including fluting about same

length. All sterna closely, moderately punctate

everywhere except for small area of scabrous sculpture at extreme sides. Pygidium about one-third

as long as wide, with very narrow, shining apical

rim, disc roughly scabrous-alutaceous. Anterior

femora with strong perimarginal groove, surface

posteriorly with eight to ten coarse, shallow punctures. Middle and hind femora shining, scattered,

fine punctures, weak, posterior femoral line of

middle femora extending about one-third distance

from knee, posterior femoral line of posterior

femur very short. Apical fringe of posterior tibia

with seven setae, without accessory spine. First

posterior tarsal segment subequal to long spur

and to following three segments combined.

AUotype Female: 3.3 mm long; 1.3 mm wide.

Apparently as in the male except that the pygidium

is noticeably wider, being about one-fourth as long

as wide.

HOLOTYPE.—USNM 71743.

TYPE-LOCALITY.—Dade County, Florida, June

1948, Strohecker.

SPECIMENS EXAMINED.—23.

DATES COLLECTED.—May and June.

DISTRIBUTION (Figure 8).—Paratypes. Florida

(22): Biscayne Bay (7), no other data. "Dade

County" (8): June 1948 (6, includes allotype),

September 1949 (2), Strohecker. Miami, Dade

County (6): 18 May, June 1948, Strohecker. Oneco,

Manatee County (1), no date, Paula Dillman.

REMARKS.—The 21 paratypes vary from 3.0 to

3.6 mm in length.

Ataenius stroheckeri is one of a difficult complex of species closely allied to A. abditus (Haldeman) and A. texanus Harold. It is a very small

species like A. exiguus Brown but differs in lacking

the alutaceous sculpture of that species, has more

evenly rounded hind pronotal angles, has larger

punctures on the elytral intervals, in good light

those on lateral intervals are approximately as

wide as the striae, the four lateral intervals are
56 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

roughly punctate, and the outside rows of punctures on intervals 7 and 8 are separated by their

diameters or less.

Most of the specimens were received many years

ago from Dr. H. F. Strohecker, for whom the

species is named.

35. Ataenius texanus Harold

Ataenius texanus Harold, 1874a:23,—Horn, 1875:142; 1887:71.

Ataenius abditus texanus.—Schmidt, 1922:450.

DESCRIPTION.—Length 3.2 to 4.0 mm; width 1.4

to 1.5 mm. Elongate, parallel, moderately convex,

shining, black, legs and clypeal margin reddish.

Head moderately convex, clypeal margin very

finely reflexed, with a small, sharp, triangular

tooth each side of a wide, median, moderately deep,

angulate emargination, sides weakly arcuate to

nearly right-angled genae; surface of clypeus concave behind median emargination; transversely

wrinkled to middle of greatest convexity, basal

half of clypeus smooth and practically impunctate,

front closely, gradually, very finely to very moderately punctate from clypeus to occiput, the punctures dense, separated by less than half their

diameters. Pronotum 1.4 mm wide and 1.0 mm

long, angles all obtusely rounded, the posterior

angles less rounded than in A. hesperius, new

species, the weakly arcuate sides and base margined,

the edge inconspicuously, minutely fimbriatecrenate under high magnification; surface everywhere evenly, densely, moderately punctate, the

punctures over the anterior one-third of the disc

noticeably finer. Elytra about 2.3 mm long and

1.4 mm wide, humeri moderately dentate, sides

straight, parallel, striae fine, moderately deep, strial

punctures crenating inner sides of the very weakly

convex, minutely alutaceous intervals, a row of

close, minute punctures along outer margin of the

intervals, 9th and 10th intervals slightly more

convex and slightly roughly punctate. Mesosternum

shagreened with fine, alutaceous sculpture and very

fine, short, decumbent hair; broadly, triangularly

carinate between the coxae. Metasternum shining,

midline strong and deep, disc closely, moderately

punctate anteriorly, gradually slightly finer posteriorly, finely, scabrously roughened outward to

sides, metasternal triangle deep, large, well-defined,

roughened within. First visible abdominal sternum

margined, the next three sterna finely fluted along

anterior margin, the fluting gradually wider on

successive segments, the 5th sternum separated

away by a deep suture almost equally wide from

side to side, not wider at middle, the anterior edge

of the sternum roughly broken by coarse punctures

which go down over the edge; all sterna with very

moderate, rather shallow punctures from side to

side, generally separated by about their diameters.

Fourth sternum two-thirds as long as the preceding

segment. Pygidium with disc roughly, not deeply

eroded. Anterior femora with perimarginal groove,

surface smooth anteriorly, moderately punctate

posteriorly, a little closer along posterior edge

where the punctures are separated by less than

their diameters. Middle and hind femora with

minute-to-fine, scattered punctures over disc; posterior marginal line of middle femur distinct over

outer one-third, broken and indistinct over inner

two-thirds; marginal line of posterior femora very

short at knee. Apical fringe of posterior tibiae of

eight setae longer at each end, without accessory

spine. First posterior tarsal segment equal in length

to long spur and to following three segments combined.

Female similar in every way to the male except

that the three middle abdominal sterna are about

equal in length, the pygidium is much shorter,

with the apical half finely, densely punctate and

the eroded area reduced to a basal marginal line.

NEOTYPE (present designation).—USNM 72185.

TYPE-LOCALITY.—Cypress Mills, Texas.

SPECIMENS EXAMINED.—213.

DATES COLLECTED.—April 1 to August 17.

DISTRIBUTION (Figure 16).—Kansas: Topeka.

Oklahoma: Payne County. Texas: Austin, Columbus, Cypress Mills, Dallas, Del Rio, Devils River,

Enchanted Rock, Houston, Kerrville, La Grange,

Menard, New Braunfels, Nueces River (Zavalla

County), Sabinal, San Antonio, Uvalde County,

Victoria.

REMARKS.—I did not find Harold's type in the

Paris Museum. One specimen labeled A. texanus

in Harold's collection does not fit the original

description. I found it to be A. puncticollis (LeConte). In his original description and remarks

Harold (1874:23) described the head as very finely

punctulate posteriorly, smooth medianly, finely

granulate anteriorly; pronotum finely, densely

punctate, anterior margin subsmooth, the punctures gradually somewhat larger toward the base;
NUMBER 154 57

FIGURE 16.—Distribution of Ataenius apicalis Hinton, A. texanus Harold,

and A. rhyticephalus (Chevrolat).

* apicalis • texanus o rhyticephalus

color pitchy black. One other species, A. hesperius,

new species, approaches this description but most

localities are west of Texas and that species is

usually a dark reddish brown to black.

As recognized here, A. texanus is easily separated

from other close relatives by the deep suture between the 4th and 5th sterna being equally wide

from side to side, not wider at the middle. A. barberi, new species, has a similar suture equally wide

from side to side, while in A. glaseri, new species,

the suture is equally wide only over the middle

two-thirds, not reaching the sides.

36. Ataenius glaseri, new species

DESCRIPTION.—Holotype Male: Length 4.1 mm;

width 1.7 mm. Black, shining, elongate, parallel,

moderately convex, legs reddish. Head moderately

convex, clypeus dentate each side of wide, moderately deep emargination, sides slightly arcuate

to right-angled genae, edge finely reflexed; surface

rather coarsely, transversely wrinkled up over greatest convexity, posterior clypeus finely, densely

punctate with minute, alutaceous sculpture intermixed, the punctures generally separated by slightly more than their diameters, frontal area with

transverse band of close, fine-to-moderate punctures, finer anteriorly and blending into those of

clypeus, generally separated by less than their

diameters; occiput smooth. Pronotum quadrate,

base arcuate, length 1.2 mm and width 1.6 mm,

moderately convex, the sides almost invisible when

viewed from directly above, anterior angles obtusely rounded, posterior angles very broadly,

evenly rounded from sides into base, sides and

base margined, margin apparently entire but under

high magnification minutely crenate-fimbriate, the

setae extremely short and separated by four or

five times their length; surface closely punctate

throughout, punctures of posterior disc moderately
58 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

coarse, separated by about their diameters, gradually finer anteriorly and approaching sides and

base. Elytra 2.6 mm long and 1.7 mm wide, humeri

dentate, elytral striae moderately deep, strial punctures fine, separated by about four times their

diameters, crenating inner margin of intervals;

intervals flat on disc, weakly convex laterally,

strongly so over apical declivity, each interval with

a row of fine punctures along outside margin except laterally and apically where the punctures

form a median row. Mesosternum broadly, weakly

carinate between the coxae. Metasternum shining,

midline long, strong, sharply impressed, disc with

a few scattered, very fine punctures, finely scabrous

at sides, metasternal triangle rather weak, slightly

roughened within. Abdominal sterna finely fluted

in front, surface with evenly spaced, shallow, very

moderate punctures generally separated by about

twice their diameters, 5th sternum half the length

of the 4th sternum, separated from 4th by a deep,

parallel-sided groove or suture, not longer at middle, the widened middle section over middle twothirds of the suture. Pygidium uneven, convex

apically, concave basally, closely punctate, very fine

and close apically, very coarse basally, close, shallow, and strongly alutaceous within. Anterior

femora with perimarginal groove, surface smooth

in front near trochamer, elsewhere with five wellseparated, setigerous punctures. Middle and hind

femora smooth and shining, posterior femoral line

of middle femur about one-third total length inward from knee, barely a trace on posterior femur.

Posterior tibial fringe worn away in holotype but

paratypes show nine very short, closely spaced

setae, without accessory spine; long spur subequal

to first tarsal segment and to the following three

segments combined.

Allotype Female: Length 4.1 mm; width 1.6 mm.

The more noticeable differences from the male

are the longer pygidium and 5th abdominal sternum. The 5th sternum almost equals the length

of the 4 th sternum. The posterior femoral lines

are slightly longer on both middle and posterior

femora, one-half on the middle and one-fifth on

the posterior.

HOLOTYPE.—USNM 71744.

TYPE-LOCALITY.—The holotype was collected at

Marshall Hall, Maryland, 19 July 1967, by Jan

Foster. The allotype was taken at the same place

13 July 1965, under logs on sand shore of the

Potomac River by O. L. Cartwright.

SPECIMENS EXAMINED.—252.

DATES COLLECTED.—June 13 to August 20.

DISTRIBUTION (Figure 13).—Paratypes. District of

Columbia (1): no date, Ulke Coll. (Carnegie

Museum). Maryland (204): Elk Neck (16), 9, 16

July 1963, John D. Glaser. Fort Washington (47):

4 July 1965, R. D. Gordon (42); 13 July 1965, O.

L. Cartwright (5). Marshall Hall (117): 4 July

1965, R. D. Gordon (1); 13 July 1965, O. L. Cartwright and R. D. Gordon (88); 19 July 1967, Jan

Foster and O. L. Cartwright (28). Prince Georges

County, NE of Wilson Bridge (24), under driftwood, 13 June 1971, W. H. Tyson. Virginia (47):

Dumfries, Prince William State Park (2), 7 July

1965, R. D. Gordon. Jamestown (2), 7 July 1967,

B. K. Dozier. Mount Vernon (41): 29 July 1967,

August 1968, Jan Foster (40); 19 August 1963,

J. D. Glaser (1). Nelson County (1), 23 June 1911,

W. Robinson. Wide Water Beach (1), 20 August

1963, J. D. Glaser.

REMARKS.—Paratypes vary from 3.2 to 4.3 mm

in length. Color varies from dark reddish, dark

brown through reddish black to piceous. Rarely,

the long spur of the hind tibia is slightly longer

than the first tarsal segment. Otherwise I found

very little variation.

Ataenius glaseri resembles A. puncticollis (LeConte) very closely; however, in A. glaseri the pronotum is more quadrate, with less arcuate sides,

is frequently widest through the anterior angles,

and the first segment of the posterior tarsus practically always is subequal to the long spur and to

the following three segments combined. In A.

puncticollis the first segment of the posterior tarsus

is noticeably shorter than the long spur, more

swollen apically, and noticeably shorter than three

following segments combined. In A. puncticollis

the sutural interval has a noticeable median row

of close, fine punctures. A similar row in A. glaseri

is much finer and less noticeable. Other elytral

punctures, especially at shoulders, also are more

noticeable in A. puncticollis.

Nearly all specimens of A. glaseri have been collected under logs and in debris on the sandy shores

of the Potomac River and upper Chesapeake Bay.

The species is named for John D. Glaser, who

first collected specimens which were recognized as

a new species.
NUMBER 154

37. Ataenius punctifrons, new species

DESCRIPTION.—Holotype Male: Length 3.6 mm;

width 1.5 mm. Elongate, parallel, dark reddish

brown, legs and clypeal margin slightly lighter in

color. Head moderately convex, clypeal margin

finely, sharply dentate each side of slightly angulate, moderate median emargination, lateral margin weakly arcuate, finely reflexed, genae distinct,

obtusely rounded; clypeal surface transversely

rugose below median convexity which is very finely

punctate, punctures of upper clypeus and to sides

gradually very slightly larger, gradually still larger

and closer over front, becoming contiguous and

moderate in size. Pronotum convex, the arcuate

lateral margins hidden when viewed from directly

above, width 1.4 mm and length 1.0 mm, anterior

angles obtusely rounded, posterior angles very

broadly rounded, sides and base finely margined,

marginal setae minute and barely visible, surface

very uniformly densely moderately punctate, narrowly, gradually, finely punctate along anterior

margin, finer than frontal punctures. Elytra convex with lateral margins slightly arcuate, length

2.3 mm and width 1.5 mm, humeri finely dentate,

elytral striae moderately deep, fine punctures arena ting inner side of moderately convex intervals,

a row of close minute punctures along outside edge

of intervals, shoulders closely finely punctate, lateral intervals slightly more convex. Mesosternum

finely shagreened, rather broadly carinate between

coxae. Metasternum shining, midline long and

deep, moderately, not very closely punctate anteriorly and outward to sides, punctures gradually

finer posteriorly, finely scabrous at extreme sides,

metasternal triangle moderately deep with a small

eroded pit at anterior angle. Abdominal sterna

shining, moderate punctures from side to side separated by one to two or more times their diameter,

first visible sternum with marginal line, remaining

sterna fluted along posterior margin, the fluting

of terminal sternum about one-third length of the

preceding sternum, which is shorter at middle than

at sides. Pygidium smooth apically, upper twothirds eroded. Anterior tibia with perimarginal

groove, smooth anteriorly, scattered, fine punctures

along posterior margin. Middle and posterior

femora shining, smooth, barely a trace of posterior

marginal line at knee; seven setae in terminal

tibial fringe, without accessory spine; first tarsal

59

segment equal to following three segments together,

and slightly shorter than long spur.

Allotype Female: Length 3.8 mm; width 1.5 mm.

Penultimate sternum not noticeably shortened at

middle, pygidium wider and not as long as in male.

HOLOTYPE.—USNM 71749.

TYPE-LOCALITY.—Minneapolis, Minnesota, 22

May 1875, R. J. Mendenhall.

SPECIMENS EXAMINED 306.

DATES COLLECTED.—January 27 to October 10.

DISTRIBUTION (Figure 10).—Paratypes. Arizona

(18): Douglas (1), 15 July 1969, J. H. Russell.

Harshaw (1), 29 July 1941, F. H. Parker. Madera

Canyon, Santa Rita Mountains (1), 27 August

1952, B. Malkin. Patagonia (15): 5, 10 July 1936,

M. Cazier (13); 21 August 1940, F. W. Nunenmacker (1); 15 July 1955, F. G. Werner and G. D.

Butler (1). Arkansas (6): Devils Den State Park

(1), 1966, R. W. Hodges. Hope (1), 30 July 1926,

L. Knoble (M. Robinson Coll., USNM). Jackson

County (1), 1 September 1960, Tuckerman. Pine

Bluff (1), 10 October, H. Soltau Coll. (USNM).

Washington County (1), 6 April 1938. West Memphis (1), 5 August 1946, O. L. Cartwright. California (4): Covina (1), 21 July 1934 (M. Robinson

Coll., USNM). Napa (2), no date (M. Robinson

Coll., USNM). Pasadena (1), 4 April, Dr. A.

Fenyes. Colorado (8): Canon City (2), 14 April, H.

Soltau Coll. (1, USNM); no date, Wickham (1,

Horn Duplicate No. 302-1891). Logan County (2),

1923, Sandhouse Coll. Rocky Ford (3), under

squash vine, 12 July 1910, McMillan. Stirling (1),

no date, Sandhouse (M. Robinson Coll., USNM).

Illinois (10): Cartersville, Williamson County (1),

15 May 1957, V. Cole. Chicago (5): 26 May 1912

(3, W. Robinson Coll., USNM); bred from onion

(1), 1 July 1911; on onion (1), 29 June 1916. Havana (1), 18 August 1907, J. D. Hood. "N. Illinois"

(1), no date, Charles W. Leng. Pittsfield, Pike

County (2), 15 August 1946, A. T. McClay. Indiana (1): Hovey (1), 3 June 1964, Charles E.

White. Hovey Lake (6), blacklight, 24 June, 9

July, 1965, Charles White. Porter County (2), lakedrift of Lake Michigan, H. Dybas. Tremont (2),

20 May 1934, H. Dybas. Iowa (20): Ames (9): 12

May 1947, R. L. Collins (1); 26 April 1948, W. H.

Tate (2); 20 May 1934, G. L. McNew (1); 30 April

1934, H. K. Chen (1); 18 April 1934, Don E. Ellis

(1); May 1943, L. Dalencour (1); 26 May 1948,

R. E. Cleary (1); 14 May 1950, A. R. Garlin (1).
60

Cedar Rapids (2), 4 May, Wickham. "County #12"

(1), 5 July 1934, W. E. Dodds. Elma (2): 16 May,

George M. Green (1); 16 May 1902, no other data

(1). Iowa City (5): 12 May 1895 (1, Wickham

Coll. USNM); 24-25 May 1916, L. L. Buchanan

(2); 25 May, Wickham (1); 27 January 1895 (1,

Wickham Coll., USNM). Lake Okaboji (1), 24

July 1917, L. L. Buchanan. Kansas (21): Douglas

County (3): April, E. S. Tucker (1); 21 May 1921,

5 May 1923, W. J. Brown (2). Gardiner Lake, Johnson County (1), 3 May 1952, Bell and Spangler.

Lawrence (5): 21 July 1930, M. W. Sanderson (1);

no date, H. Soltau (2); electric light, W. J. Brown

(2). Mount Hope (2), 20 June (Wickham Coll.,

USNM). Muncie (1), 9 July 1926, George M.

Green. Ottawa (1), 15 July 1923, W. J. Brown.

Topeka (7): 23 July, C. V. Riley (1, USNM); 1

June, 19 July, Popenoe (4); 7, 8 July, no other

data (2). Wakhena (1), no date, W. M. Mann.

Louisiana (8): Alexandria (6): in dry corn stalks,

26, 27 February 1909, Hunter Coll. (4); corn field,

5 April 1911, G. D. Smith (2). Houma (1), 1958,

S. D. Hensley. Shreveport (1), 3 July 1891, F. W.

Mally. Michigan (5): Detroit, no date, Hubbard

and Schwarz (3); August, Hubbard and Schwarz

(2). Minnesota (19): Buffalo (5), 30 July, 5, 10

August, 6 September 1947, S. I. Parfin. Faribault

(2), at light, 14 June 1934, A. A. Granovsky. Minneapolis (8, includes allotype), 12 May 1875, R. J.

Mendenhall. St. Paul (4), at light, 1 May 1934,

A. A. Granovsky. Missouri (9): "Mo." (1), no date,

T. Pergande. Black Jack (1), on Helianthns

tuberosa, 30 October 1930, Satterthwate. Charleston (1), trap light, 18 April 1917, Satterthwate.

Parkville (1), 25 May 1947, J. H. Laffoon. St.

Louis, (1), George M. Green. Webster Groves (4),

16 August 1928, 12 July 1930, Satterthwate. Nebraska (3): Ainsworth, 2 mi S Brown County (1),

5 July 1946, R. G. Schmidt. West Point (2), 16

May, May 1888. New Hampshire (1): "N. H.," no

date, Roland Hayward. New Jersey (8): Hillsdale,

4 July 1919, Shoemaker. New Mexico (2): Artesia

(1), 29 July 1937, D. J. and J. N. Knull (M. Robinson Coll., USNM). Bernalillo (1), 15 July 1923,

F. Psota. North Dakota (3): Cavalier County (1),

7 July 1916, Larry Kotchman. Slope County (2),

black light, 30 June 1966, Robert Gordon. Ohio

(1): "Ohio," no other data. Oklahoma (11): Lake

Texhoma, Marshall (1), 16 June 1968, W. Suter.

Hinton (1), 26 July 1966, W. Rosenberg. OkmulSMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

gee (1), at light, 24 June, J. D. Mitchell. Payne

County (7), 3, 13 May 1924, 7 April 1925, 21 August 1926, W. J. Brown. South McAllister (1), 11

June, Wickham. South Dakota (14): Brookings

(7): 8 July 1943, H. C. Severin (1, Cartwright Coll.,

USNM); 21 June, 7, 8, July 1943, 15 June 1944, 23

July 1948, H. C. Severin (6). Chamberlain (2), 13

June 1940, H. C. Severin. Elk Point (1), 17 June

1946, H. C. Severin. Highmore (4), light trap, 22

June, 1, 8, 16 July 1944, H. C. Severin. Tennessee

(36): Reelfoot Lake, 10 June 1946, O. L. Cartwright. Texas (51): "Texas," no other data (3).

Austin (1), 29 June, H. Soltau Coll. (USNM).

Big Bend National Park (21): Brewster County

(1), 28 August 1937, Rollin H. Baker; Boquillas

(13), 1850 ft, 17, 23 May 1959, Howden and Becker;

Glen Springs (1), 5 mi N, 3000 ft, 24 May 1959,

Howden and Becker; Santa Elena (6), 2200 ft, 4,

21 May 1959, Howden and Becker. Brownsville (5):

3 May 1904, H. S. Barber (1); 24 April 1908, McMillan (4), Brownwood (4), 5 October 1905, W. D.

Pierce. College Station (1), 22 April 1930, H. J.

Reinhard. Columbus (3), 9 July, 17 August, Hubbard and Schwarz. Cypress Mills (1), no date, Hubbard and Schwarz. Dallas (1, Wickham Coll.

USNM). Devils River (1), 4 May 1907, E. A.

Schwarz. Enchanted Rock, Llamo County (1),

light trap, 18 April 1959, H. F. Howden. Fort Davis

(3), at light, 10, 31 May 1959, Howden and Becker.

Grayson County, Jupiter Point, Lake Texhoma,

12 mi N of Whitesboro (1), 16 April 1968, W.

Suter. Kerrville (2): 1 April 1959, Becker and

Howden (1), at light, 30 May 1906, F. C. Pratt (1).

Lajitas, SW Brewster County (1); 19 May 1959,

Howden and Becker. Sabinal (2): April 1910,

Pierce and Pratt (1); June 1910, no other data (1).

Wisconsin (36): Dane County (1), 12 April 1897.

Griffith State Nursery, Wood County (29), 20, 22

May, 10, 14, 26 June, 6 July 1948, 4 May, 2, 12 June

1949, R. D. Shenefelt. Nekoosa, Wood County (5),

25, 28 August 1948, 28 July, 10 August 1949, R. D.

Shenefelt. Port Edwards, Wood County (1), 6 August 1949, R. D. Shenefelt. Mexico (3): Coahuila:

Boquillas del Carmen, 1850 ft, 29 May 1959, Howden and Becker.

REMARKS.—Ataenius punctifrons differs from A.

texanus in the noticeably punctate front and upper

clypeus and in punctures of the anterior femora

being along the posterior half, leaving the anterior part nearly smooth. The clypeus and front
NUMBER 154 61

of A. texanus are smooth, sometimes with minute

frontal punctures, and the anterior femora are

more widely and distinctly punctate. Abdominal

fluting of 5th sternum in A. punctifrons is longer

at middle than at sides.

38. Ataenius utahensis, new species

DESCRIPTION.—Holotype Male: Length 3.9 mm;

width 1.6 mm. Elongate, parallel, shining, dark

reddish brown. Head convex, finely reflexed clypeal

margin, sharply, triangularly dentate each side of

moderate median emargination, sides weakly arcuate, genae obtusely right-angled; surface coarsely,

transversely rugose anteriorly below greatest convexity, upper clypeus smooth to minutely punctate shading to very fine across upper front. Pronotum quadrate, 1.5 mm wide and 1.1 mm long,

convex lateral margin not visible from directly

above, anterior angles obtusely rounded, posterior

angles very broadly rounded, sides and base finely

margined, lateral setae very minute, scarcely discernible; surface closely punctate throughout, the

punctures moderate at middle of disc, separated

by a little less than their diameter, very gradually

finer away in all directions especially anteriorly,

except in the lateral foveae and anterior angles

where the punctures become noticeably larger and

practically contiguous. Elytra 2.5 mm long and

1.6 mm wide, convex, humeri finely dentate, striae

moderately deep, fine strial punctures weakly crenating the inner margin of the convex intervals,

a row of very fine punctures along outside margin,

those of the outside intervals slightly more noticeable, shoulders noticeably punctate, outside

intervals otherwise not different. Mesosternum

shagreened as usual with fine, close punctures and

short, fine, decumbent hairs, broadly carinate between the coxae. Metasternal midline long and

deep, disc with scattered, very moderate punctures,

slightly smaller posteriorly, separated by about one

diameter, finely scabrous from halfway to sides,

metasternal triangle with a small scabrous spot at

anterior angle. First visible abdominal sternum

with posterior marginal line, remaining sterna

very finely, narrowly fluted along anterior margin,

the fluting much wider on penultimate sternum,

middle three sterna evenly, moderately punctate

from side to side, the punctures separated by one

or two diameters, punctures of terminal sternum

much closer and smaller, penultimate sternum

shortened at middle, about two-thirds as long as

at sides. Pygidium very finely punctate at apex,

eroded gradually more deeply to base. Anterior

femur with perimarginal groove, anteriorly with

minute, scattered punctures, gradually larger and

transversely elongate posteriorly. Middle and posterior femora shining, with scattered, minute punctures, posterior marginal line reduced to a mere

trace at knee. Apical fringe of posterior tibia of

seven or eight fine setae, without accessory spine,

first tarsal segment shorter than long spur and

three following segments combined.

Allotype Female: Length 3.4 mm; width 1.4 mm.

Differs from the male in penultimate abdominal

sternum not shortened at middle and the pygidium

wider.

Paratypes vary in length from 3.4 to 4.1 mm.

The clypeus appears impunctate or very minutely

punctate.

HOLOTYPE.—USNM 71750.

TYPE-LOCALITY.—St. George, Utah, A. M. Woodbury collector (Wickham Collection).

SPECIMENS EXAMINED Six.

DATE COLLECTED.—October 1.

DISTRIBUTION (Figure 11).—Paratypes and allotype. Zion Park, Utah (5), 1 October 1934, Bryant.

REMARKS.—Ataenius utahensis resembles A. texanus very closely in the practically smooth upper

clypeus, but A. utahensis is shorter, more convex,

with more noticeably punctate shoulders, and lateral intervals which are more convex with weaker

crenations. The larger, closer punctures in the

lateral pronotal fovea and anterior angles are

especially noticeable.

39. Ataenius hesperius, new species

DESCRIPTION.—Holotype Male: Length 3.9 mm;

width 1.6 mm. Piceous, elongate, parallel, moderately convex, shining; anterior pronotal angles,

margins of head, and legs dark reddish brown.

Head convex; clypeus anteriorly broadly, moderately emarginate between small, sharp teeth,

anterior fourth of clypeus strongly shining,

granulate-rugose, median convexity smooth, actually

extremely minutely punctate under high magnification, the punctures upward gradually more noticeable and slightly increasing in size but still fine

and dense across the occiput where they are sep-
62

arated by about their own diameters; margin of

clypeus finely reflexed, sides weakly arcuate, genae

not prominent, nearly right-angled. Pronotum 1.0

mm long and 1.5 mm wide, approximately quadrate viewed from directly above, viewed laterally

sides arcuate to very obtuse, rounded posterior angles, sides and base margined, the edge apparently

entire but under high magnification actually minutely crenate and fimbriate with very fine, short,

widely spaced setae; surface everywhere evenly,

densely, moderately punctate, narrowly finer along

middle anterior margin, punctures generally separated by less than their diameter on disc, closer

in anterior angles. Elytra 2.6 mm long and 1.6 mm

wide, smooth, shining, humeri finely dentate, striae

moderately deep, crenate-punctate, the crenations

cutting the inner margins of the slightly convex

intervals, a row of fine punctures along outside of

intervals, lateral intervals, especially last two, somewhat roughened by strial crenations and more

medially placed row of punctures, humeri also

roughened, sutural interval with median row of

close, fine punctures which become much closer

at apex. Mesosternum shagreened, with moderately

dense, short, decumbent hair; strongly carinate between the coxae. Metasternum with strong deep

midline; flat discal area with scattered, fine punctures, finer posteriorly, separated by two times their

diameters or more, punctures gradually larger outward to scabriculate area at sides, metasternal

triangle moderate and scabriculate within. Abdominal sterna closely punctate, the punctures moderate

and separated by about their diameter at middle,

gradually becoming slightly larger outward to

sides, sterna finely, closely fluted along anterior

margin. Suture deep between 4th and 5th sterna,

not noticeably suddenly wider at middle but from

side to side gradually wider to middle then decreasing to opposite side. Pygidium eroded medially,

posterior or apical edge finely punctate. Anterior

femora with perimarginal groove, surface finely to

moderately punctate, punctures closer and more

numerous over posterior half. Middle femora with

scattered, very fine punctures, postfemoral line

about two-fifths total femoral length. Posterior

femora similarly punctate, posterior femoral line

very short at knee, less than width of femur at

knee; tibiae without accessory spine, eight fimbriae

in terminal fringe; first tarsal segment slightly

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

shorter than long spur, about equal in length to

following three segments combined.

Alloiype Female: Very similar to the holotype

male except that its pygidium is not as long, the

4th sternum is not as short at middle, and the 5th

sternum is longer.

HOLOTYPE.—USNM 71757.

TYPE-LOCALITY.—Arizona: Huachuca Mts., Sunnyside Canyon, 8 August 1970, K. Stephan.

SPECIMENS EXAMINED.—153.

DATES COLLECTED.—February 17 to October 26.

DISTRIBUTION (Figure 17).—Paratypes. Arizona

(85): "Arizona" (1), no date, Morrison (Hubbard

and Schwarz Coll.). Chiricahua Mountains (12):

20 July 1953, 2 July, D. J. and J. N. Knull (6,

Cartwright Coll., USNM); 26 July 1952, 13, 22

July 1953, D. J. and J. N. Knull (4, Cartwright

Coll.); 2, 4 July, Hubbard and Schwarz (2, USNM).

Fort Grant (1), 12 July, Hubbard and Schwarz.

Fort Yuma (1), 27 June, Hubbard and Schwarz

(USNM). Huachuca Mountains (13): Sunnyside

Canyon (6, includes allotype), 8 August 1970, K.

Stephan Coll.; no other data (7, Brooklyn Museum

Coll.). Oak Creek (10), 12 July 1937, W. F. Turner,

C-2586. Pajarito Mountains, Pena Blanca Canyon

(16), 11, 28 July 1970, K. Stephan Coll. Patagonia

(5): 5 July 1936, M. Cazier (4); 21 August 1940,

F. W. Nunenmacker (1, Cartwright Coll., USNM).

Pinal Mountains (2), no date (Wickham Coll.,

USNM). Portal, Southwest Research Station (5):

15 July 1961, B. Benesh (2); 13 August 1951, R. H.

Arnett (2); 5400 ft, 1-3 July 1956, O. L. Cartwright (1). St. Johns, Apache County (1), at light,

29 July 1959, R. S. Beal. Santa Catalina Mountains

(9): Bear Canyon (2), 6 August 1970, K. Stephan

Coll.; Molino Canyon (6), 23 June, 10 July 1968,

26 June, 26 August 1969, 2 July 1970, K. Stephan

Coll.; Sabino Canyon (1), lights, 30 July 1954, F.

G. Werner. Santa Rita Mountains (18): Madera

Canyon (9): 24 July 1968, 6 August 1970, K.

Stephan (3); 27-28 August 1952, B. Malkin and

W. J. Tilden (6). California (41): Fresno (2), 8,

26 May, E. A. Schwarz. Independence (2), 17 July,

Wickham (Wickham Coll., USNM). Lone Pine (1),

no other data. Los Angeles County (6): no date

(4, Coquillet Coll., USNM); July, A. Koebele (1);

"Ulke 62" (1, Wickham Coll., USNM). Napa (3),

no date (M. Robinson Coll., USNM). Palm Springs

(3): "15 J," Hubbard and Schwarz (1); 27 August.
NUMBER 154

no other data (1); 2 October, Hubbard and

Schwarz (1). Pasadena (6): 17 August, no other

data (4); 7 April 1877 (2, Los Angeles County

Museum). San Bernardino County (10): no date,

Coquillet (8); no other data (2). San Diego (5),

no date, G. H. Field (Chittenden Coll., USNM).

Santa Rosa Mountains (2), 5, 25 June 1946, D. J.

and J. N. Knull (Cartwright Coll., USNM). Sunol

(5 mi S), Alameda County (1), no other data.

Colorado (1): Canon City, 16 April (Soltau Coll.,

USNM). Kansas (1): Seneca, 11 July 1964, K.

Stephan. Louisiana (3): Montgomery (1); 26 October 1892 (H. Soltau Coll., USNM). New Orleans

(2), no date, "Shufeldt from USDA." Nebraska

(I): Lincoln, 5 May (H. Soltau Coll., USNM).

New Mexico (5): Aztec (3), 28 July 1895, gift of

C. T. Brues (Cartwright Coll., USNM). City of

Rocks State Park (1), 17 July 1959, K. V. Krombien.

Las Vegas (1), 12 August (Barber and Schwarz

Coll., USNM). Oklahoma (3): Ardmore, 5 April

1908, "Hunter No. 1486," C. R. Jones. South Dakota (1): Spearfish, light trap, 16 July 1944, H. C.

Severin (Cartwright Coll., USNM). Texas (11):

"Texas," no date (1, C. V. Riley Coll., USNM).

Austin (1), 29 June, H. Soltau. Columbus (3):

"Horn dupl. No. 62, 1892" (1 Wickham Coll.,

USNM); 22 May, C. V. Riley (1); 20 June, Hubbard and Schwarz (1). Dallas (1), at light, "Hunter

No. 318," F. C. Bishopp. Sabrinal (1), 7 September

1910, F. C. Pratt. San Diego (2), 25 May (Hubbard

and Schwarz Coll., USNM). Victoria (1), 31 March,

E. A. Schwarz. Wolfe City (1), 17 February 1908,

"Hunter No. 1465," C. R. Jones.

REMARKS.—Ataenius hesperins is very closely

similar to A. texanus; however, the pronotum is

more uniformly punctate with fewer fine punctures

anteriorly at middle and the deep suture between

the 4th and 5th sterna decreases in width at sides.

Its distribution is farther west than that of A.

texanus.

40. Ataenius abditus (Haldeman)

Aphodius (Oxyomus) abditus Haldeman, 1848:106.

Ataenius abditus.—Harold, in Gammingcr and Harold, 1869:

1066—Horn, 1875:142; 1887:72.—Schmidt, 1922:149.

Ataenius attenuator Harold, 1874:22 Horn, 1875:142.

DESCRIPTION.—Length 3.3 to 4.0 mm; width 1.4

to 1.5 mm. Black or brownish black, elongate63

parallel, only moderately convex, weakly shining.

Head moderately convex; clypeus broadly, shallowly emarginate with a small, sharp tooth each

side of emargination, anterior third strongly shining and transversely rugose, the rugae not over

greatest clypeal convexity which is very finely,

closely, distinctly punctate, the punctures gradually larger upward over front and occiput; margin

of clypeus very finely reflexed, sides weakly arcuate

before genae, genae not prominent, approximately

right-angled. Pronotum nearly rectangular from

directly above, from the side posterior angles

broadly rounded; lateral and basal margin apparently entire but very finely crenate with widely

spaced, extremely short, minute setae under high

magnification; surface densely, moderately, uniformly punctate everywhere, slightly closer laterally,

especially in the anterior angles where the punctures tend to coalesce. Elytra microreticulate,

humeri finely dentate, striae fine, deeply, finely

punctate, intervals very moderately convex, the

lateral intervals more noticeably roughened by

microreticulate or alutaceous sculpture and an outside row of fine punctures, humeri noticeably

alutaceous, sutural intervals with row of close, fine

punctures, striae noticeably widened over posterior

declivity, lateral margin and intervals over declivity

show very minute, short, closely spaced setae under

high magnification. Mesosternum shagreened, with

moderately dense, short, decumbent, fine hairs;

strongly carinate between the coxae. Metasternum

with strong, deep midline; flattened discal area

moderately, closely punctate, punctures separated

by about their diameter, the punctures extending

out laterally to the finely scabriculate area of the

outer third, metasternal triangle deep and scabriculate within. Abdominal sterna moderately, closely,

shallowly, uniformly punctate from side to side,

finely, very closely fluted along anterior margin.

Pygidium medially eroded and alutaceous, bordered by shiny posterior margin. Anterior femora

with perimarginal groove, surface moderately,

closely punctate. Middle femora with moderate

punctures throughout separated by about their

diameter, deep posterior marginal line inward from

knee over half length of femur. Posterior femora

more finely punctate, the punctures separated by

two or more times their diameter, and posterior

femoral line short, about equal to width of femur

at knee; tibiae without accessory spine, terminal
64 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

fimbriae 8 to 10 in number, first tarsal segment

slightly shorter than long spur and equal to following three segments combined.

HOLOTYPE.—Museum of Comparative Zoology,

in LeConte collection, No. 8359.

TYPE-LOCALITY.—"Middle States" (i.e., Middle

Atlantic States).

SPECIMENS EXAMINED.—325 +.

DATES COLLECTED.—March 20 to November 3.

DISTRIBUTION (Figure 12).—District of Columbia.

Florida: Neshamy. Georgia: Alapaha River (17 mi

E of Nashville), Athens (Horshoe Bend, Clarke

County). Illinois: Riverside. Indiana: Kosciusko

County, Lake County, Porter County, Tippecanoe

County. Kentucky: Cumberland Falls (Whitley

County), Summit. Maryland: Anne Arundel County (S. I. Java Farm), Baltimore, Beltsville, Chesapeake Beach, College Park, Kenwood Beach,

Laurel, Marlboro, Marshall Hall, Plummers Island, Takoma Park. Massachusetts: Amherst. Michigan: Detroit, Isabella County, La Salle, Midland

County, Monroe, Port Huron. Mississippi: Greenwood, Gulfport, Lucedale. New Hampshire: Wentworth. New Jersey: Atko, Ballingers Mill, Camden,

Colonia, Hadden Heights, Hartford, Hillsdale,

Lavalette, Phillipsburg, Westville. New York:

Douglaston (Long Island), Peekskill, Staten Island.

North Carolina: Balsam, Black Mountain, Edenton, Highlands, Hot Spring (French Broad River),

Looking Glass Mts., Melrose, Mitchell County,

Pisgah National Forest, Raleigh, Retreat, Sunburst.

Ohio: Hocking County, Ottawa County, Schoenbrun (Tuscarawas County), Toledo. Pennsylvania:

Jeannette, Manayvick, Pittsburgh. South Carolina:

Aiken, Anderson County, Belton, Cayce, CCC

Camp No. 2, Clemson, Columbia, Eastatoe River,

Edgefield, Greenville County, Hampton, Jenkinsville, Jocassee, Marion, Salem, Sandy Springs, Sassafras Mtn., Summerville, Walhalla. Tennessee: Central, Cummins Mill (Jackson County), Green

Branch Cove (Great Smoky Park). Vermont: Duxbury (Winooski River), Jonesville (Winooski

River). Virginia: Fairfax, Falls Church, Fort Monroe. West Virginia: White Sulphur Springs. Canada: Ontario: Hemmingtord, La Salle, Lexington,

Long Point, Point Pelee, Tilbury, Toronto, Turkey

Point. New Brunswick: French Lake.

REMARKS.—Ataenius abditus (Haldeman) is

close to A. texanus Harold and A. exiguus Brown.

It is black and usually noticeably alutaceous, as is

the smaller exiguus Brown, while texanus is smooth

and shining. Ataenius abditus is often found among

the roots of grasses on the sandy banks of streams.

Ataenius exiguus is slender and smaller with redder

legs than A. abditus and occurs from North Carolina to Mississippi, usually near the seashore.

Ataenius abditus is generally distributed east of

the Mississippi River.

41. Ataenius exiguus Brown

Ataenius abditus exiguus Brown, 1932:10.

DESCRIPTION.—Length, 2.7-3.2 mm; width 1.1-1.2

mm. Black, elongate, parallel, moderately convex,

weakly shining; legs reddish brown. Head moderately convex; clypeus broadly, shallowly emarginate

between small, sharp, triangular teeth; sides very

finely reflexed, arcuate; genae not prominent, distinctly angled, more than right-angled; clypeus

finely, transversely rugose in front below greatest

convexity; middle very finely to minutely punctate,

head basally with a rather broad band of closer,

larger punctures. Pronotum nearly rectangular

from directly above, very slightly wider in front,

moderately convex, anterior angles obtusely

rounded, posterior angles broadly rounded; surface

in general closely, evenly, uniformly punctate

throughout, sometimes closer in anterior angle,

elsewhere, under high magnification, smooth to

minutely microreticulate or alutaceous; fine lateral

and basal bead showing extremely minute crenulations and setae under high magnification. Elytra

finely to minutely microreticulate or alutaceous,

humeri finely dentate, striae fine, crenate-punctate,

intervals convex with row of punctures separated

by three or four times their diameters along inner

margin and a row of fine punctures along outer

side, alternate intervals with punctures closer and

more numerous, sutural intervals flat, extreme lateral interval not, or very slightly, crenate on inner

margin, otherwise not different, humeral area distinctly punctate, epiplurae flat or slightly concave,

alutaceous, striae not noticeably widened apically;

punctures of elytral margin and apical declivity

with minute, extremely short setae under high magnification. Mesosternum shagreened, with minute,

fine, decumbent hairs, carinate between the coxae.

Metasternum with strong, deep midline, disc

coarsely punctate, the punctures separated by one
NUMBER 154

or two times their diameters, coarse punctures outward to finely rugose area at sides, metasternal

triangle deep and finely, closely, rugosely punctate.

Abdominal sterna shallowly, evenly, coarsely punctate as on metasternum, finely fluted in front.

Eroded area of pygidium scabriculate. Anterior

femora with perimarginal groove, surface punctate

throughout, punctures separated by one or two

diameters. Middle femora similarly strongly punctate, postfemoral line about half femoral length.

Punctures of posterior femora somewhat finer and

not as close, postfemoral line very short, not as

long as width of femur at knee; apical fringe of

eight or nine short fimbriae, no accessory spine,

long spur subequal to first tarsal segment, first

tarsal segment equal to combined length of the

following three segments.

TYPE.—In Museum of Comparative Zoology.

TYPE-LOCALITY.—Homestead, Florida.

SPECIMENS EXAMINED.—80 + .

DATES COLLECTED.—January 19 to October 15.

DISTRIBUTION (Figure 17).—Florida: Arcadia,

Archbold Biological Station, Biscayne Bay, Boynton, Bradenton, Dunedin, Fort Lauderdale, Gainesville, Hernando County, Highlands Hammock

State Park, Homestead, Jacksonville, Jupiter, La

Belle, Lake Letta, Levy County, Mayport, Miami,

Naples, Oneco (Manatee County), Otter Creek,

Pablo Beach, Panacea, Punta Gorda, St. Augustine,

St. Petersburg, Sebring, Titusville, Vilano Beach,

West Palm Beach, Winter Haven, Winter Park,

Zolfo Springs. Georgia: Savannah, Tybee Beach.

Mississippi: Gulfport, Keesler Field. North Carolina: Balsam (doubtful locality). South Carolina:

Charleston, Folly Beach, Hilton Head, Mount

Pleasant, Myrtle Beach, Sullivans Island.

REMARKS.—Ataenius exiguus is noticeably smaller

than A. abditus, with a wide, distinct band of closer

larger punctures basally above a nearly smooth

middle convexity of the clypeus. Compared to the

length of the pronotum, the elytra are relatively

shorter in A. exiguus. In A. exiguus the elytra and

the elytral intervals are more convex than in A.

abditus.

Most specimens have been taken in sandy coastal

areas in the southeastern states. I collected long

series under rings of fine debris left behind the

dunes around temporary rain pools after a heavy

rain at Folly Beach, South Carolina.

65

42. Ataenius sciurus, new species

DESCRIPTION.—Holotype Male: Length 6.4 mm;

width 3.0 mm. Elongate-oblong, convex, shining,

dark castaneous. Head convex, clypeal margin

finely reflexed, broadly rounded each side of rather

shallow median emargination, sides arcuate to

broadly rounded genae; clypeus minutely wrinkled,

minutely punctate, moderately shining and concave

behind median emargination; gradually very fine,

to fine, to very moderately coarse punctures upward

over median convexity to base of clypeus, a trifle

larger laterally where they are slightly elongate,

and deeper posteriorly, generally separated by their

diameter or less; frontal punctures dense, round,

and about the same size as adjacent clypeal punctures but closer, practically contiguous at suture,

gradually more widely separated toward base. Pronotum unusually short and wide, length 1.5 mm

and width 2.5 mm, anterior angles very obtusely

rounded, sides nearly straight, hind angles feebly

emarginate, base faintly sinuate and weakly lobed

at middle, base margined but sides not distinctly

so, edge fimbriate-crenate under moderate magnification, the crenations distinct but the setae minute

and not easily seen; disc with mixed, very fine and

very moderate, scattered punctures, laterally the

fine punctures disappear, and moderately coarse

punctures become quite dense, separated by half

their diameters or less. Elytra convex, sides arcuate,

length 4.2 mm, width posterior to middle 3.0 mm,

humeri finely, sharply dentate, striae fine, moderately deep, deep strial punctures separated by about

five times their diameter, slightly crenating sides

of moderately convex intervals, intervals, including

sutural, with scattered, fine, very minutely setigerous punctures more or less in two rows, the extreme edges of the interval with a fine alutaceous

line, 10th interval flat, alutaceous with a median

row of low, indefinite, shiny tubercles, shoulders

coarsely punctate; striae become much wider and

the intervals subcarinately convex over apical declivity; strongly convex apical edge of elytra closely,

noticeably very moderately punctate. Mesosternum

shagreened as usual, low, wide, shining carina between the coxae. Metasternum shining, midline

long, fine, moderately deep, deeper at each end,

surface with rather scattered, very fine punctures,

finely scabrous out to sides, rather shallow

metasternal triangle very finely scabrous within.
66 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 17 Distribution of Ataenius exiguus Brown and A. hesperius, new species.

• extern us *k hesperius

First visible abdominal sternum with strong posterior marginal line. Remaining sterna fluted along

anterior margin, the fluting increasingly longer on

successive sterna, those of 5th sternum at middle

nearly half the length of the sternum; surface

everywhere very finely alutaceous, the sterna weakly

convex, strongly, closely punctate from side to

side, punctures at middle finer and less close,

toward sides coarser, closer, shallower, becoming

noticeably elongate at extreme sides. Pygidium with

shiny, convex, coarsely punctate, wide apical lip

connected to base by a sharp median carina, the

eroded disc finely alutaceous with a few fine, scattered tubercles, the alutaceous surface slopes gradually from the apical lip to the deepest point at

the high carina-like basal edge. Anterior femora

with perimarginal groove, surface densely, scabrously punctate anteriorly, less scabrous and punctures well-separated posteriorly. Middle femora

coarsely, closely punctate along anterior margin,

the puncturest noticeably elongate, end to end,

similarly punctate over outer fourth, discal area

gradually more finely and less closely punctate

toward base, posterior marginal line deep and

entire. Posterior femora very similar but the punctures round and fewer in number, three or four

coarse setigerous punctures at knee, posterior marginal line deep and entire. Apical fringe of posterior tibia with nine close, short, even setae, a

long, strong, triangular accessory spine and without an intervening seta. Metatarsus nearly one-third

longer than long spur and equal to the following four segments combined. The 4th abdominal

sternum is shorter at middle and the pygidium

much longer than in the female.

AUotype Female: Length 6.0 mm; width 2.8 mm.

I noticed no differences from the holotype other

than the longer 4th abdominal sternum and shorter

pygidium.

HOLOTYPE.—USNM 71745.
NUMBER 154

TYPE-LOCALITY.—7 mi N of Gainesville, Florida.

Collected 22 January 1947, in nest of Florida fox

squirrel, Scitirus niger L., by J. C. Moore.

SPECIMENS EXAMINED.—20.

DATES COLLECTED.—March 12 to December 23.

DISTRIBUTION (Figure 18).—Paratypes. Florida

(19): Archbold Biological Station, Highlands

County, near Lake Placid (1), at light, 16 May

1968, O. L. Cartwright. Dunedin (2), at lights, 14

May 1959, O. L. Cartwright. Gainesville (4): 22

January 1947, J. C Moore (2, includes allotype,

collected with holotype); 21 May 1970, blacklight,

F. W. Meade (1); 30 May to 2 June 1968, blacklight, R. E. Woodruff (1). Merritt Island (1),

horned owl nest, 12 March 1956, Howden and

Howell. Oneco, Manatee County (1), no date,

Paula Dillman. Welaka, Putnam County (10), in

fox squirrel nests, various dates, 24 March to 23

December 1947, J. C. Moore.

REMARKS.—Ataenius sciurus is very close to A.

brevinotus Chapin (1940:37) described from Cuba,

but posterior angles are not so distinctly emarginate, the base is distinctly lobed or subangulate

at middle, the coarse punctures extend over the

anterior disc of the pronotum, the head punctures

are not as fine, the elytral punctures are larger and

more noticeable, the lateral elytral striae are wider,

the pronotum is more convex, and the punctures

of upper clypeus and front are of equal size and

larger than in A. brevinotus, with the lateral

clypeal punctures longitudinally elongate in A.

sciurus.

The large size and wide, short pronotum separate

this species from others found in the United States

and Canada.

43. Ataenius gracilis (Melsheimer)

Oxyomus gracilis Melsheimer, 1844:137.

Aphodius chilensis Solier, 1851:72.

Ataenius gracilis.—Harold, 1867a:281.—Horn, 1887:79 Arrow, 1903:513 Schmidt, 1922:436.—Chapin, 1940:25.

DESCRIPTION.—Length 2.8 to 3.5 mm; width 1.0

to 1.3 mm. Elongate, parallel, only weakly convex,

moderately shining; piceus; legs, anterior margin

of clypeus, and pronotum frequently reddish. Head

weakly convex, margin of clypeus rounded each

side of moderate emargination, sides straight to

somewhat depressed, nearly right-angled genae,

67

edge very finely reflexed; surface slightly concave

and rough with close, round, fine, shallow punctures immediately behind median anterior emargination, the round punctures extending up to

greatest convexity of clypeus, elsewhere with close

elongate punctures or lines of three or four combined punctures, the lines in some specimens having a tendency basally to curve slightly around the

greatest convexity and appear diagonal in direction. Above the clypeal frontal suture, which can

be traced easily, the punctures are larger, elongate

but shorter, and even more dense, and are round

and smaller in front of the eyes. Pronotum nearly

quadrate, a typical specimen measures 1.1 mm

wide and 0.9 mm long, with the elytra 2.0 mm in

length. Base of pronotum arcuate, sides nearly

straight, anterior angles obtusely rounded, posterior

angles very broadly rounded from sides into base,

sides and base finely margined, apparently entire

without marginal setae but under high magnification appear very minutely crenate-fimbriate, the

setae about as broad as long and widely separated;

surface everywhere densely punctate, the punctures

moderate in size, very slightly smaller and closer

toward the sides; slightly depressed in anterior angles and two foveae are vaguely discernible each

side. Elytra finely dentate at shoulders, striae moderately deep, strial punctures as wide as striae,

slightly crenating edges of the intervals; intervals

medially carinately convex, the inner side slightly

concave and alutaceous, the outside slope similar

but with a row of very fine punctures near vertex

of carina, laterally the punctures are median and

break the carina, otherwise all intervals are about

the same. The shouders show numerous very moderate punctures. Mesosternum broadly carinate between the coxae. Metasternum shining, midline

long, deep, and strong, disc with numerous, close,

moderate punctures separated generally by one

diameter or less, fine to very fine posteriorly, finely

scabrous laterally, metasternal triangle conspicuous,

the finely scabrous area within uniting with the

similar lateral sculpture. Abdominal sterna finely

Huted along anterior margin and with a bordering

row of very close punctures along posterior margin,

otherwise with dense, very moderate punctures generally separated by their own diameters or less, at

extreme sides the punctures frequently become

larger, shallower, alutaceous within and even run
68 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 18.—Distribution of Ataenius stephnni, new species, A. picinus Harold, A. brevis Fall,

and A. sciurus, new species.

• stephani -k picinus o brevis D sciurus

together, punctures of 5th sternum are noticeably

finer. Pygidium, over apical half at least, convex,

densely and finely punctate, eroded concave area

frequently reduced to a basal line. Anterior femora

with perimarginal groove, punctate everywhere,

punctures very moderate in size, generally separated

by their own diameters, some uniting in short

diagonal lines. Middle and hind femora with fine,

uniformly distributed punctures separated by about

twice their diameters. Posterior femoral line complete on middle femora, about half femoral length

on posterior femora. Posterior tibia without accessory spine, apical fringe of seven short, close, uniform setae and three longer setae at outer angle;

first tarsal segment longer than long spur, and

longer than following three segments combined.

As is generally the case, the 5th abdominal sternum

is much shorter than the preceding sternum, usually

about half as long, and the pygidium is longer than

in the female.

TYPE.—In Museum of Comparative Zoology.

TYPE-LOCALITY.—"Pennsylvania."

SPECIMENS EXAMINED.—450+ .

DATES COLLECTED.—January 19 to December 20.

DISTRIBUTION (Figure 19).—Alabama: Birmingham, Mobile, Selma. Arkansas: Monte Ne Br.

(Benton County), Washington County. Connecticut: Cromwell. South Dakota: Elk Point. Delaware:

Bridgeville, Laurel, Newark, Ship John Light

House. District of Columbia: near Riverdale. Florida: Archbold Biological Station, Avon Park, Coconut Grove, Crescent City, Dade County, Dunedin,

Gainesville, Gold Head Beach, Highlands State

Park, Hillsborough County, Homestead, Kissimmee,

Lake Letta, Lake Placid, Manatee Springs State

Park, Marion County, Miami, Myakka City, Ocala,

Oneco, Palm Beach County, Putnam County, Sarasota, Tall Timbers Research Station, Tampa,

Winter Haven, Winter Park. Georgia: Atlanta,

Beachton, Emory University. Heards Pond (Thomas
NUMBER 154 69

County), Milner, Newton, Okefenokee Swamp, Savannah, Ware County, Waycross. Illinois: Carbondale, Dongola, Evanston, Heyworth, La Grange,

Starved Rock State Park, Urbana. Indiana: Grantsburg, Hovey Lake, Indianapolis, Knox County,

Miller, Putnam County, Starke County, Vermillion

County. Iowa: Atwood, Des Moines, Iowa City,

Mount Pleasant. Kansas: Argentine, Douglas County, Lawrence, Osage, Topeka, Wellington. Kentucky: Anchorage (Jefferson County), Barbourville,

Cazier, Henderson, Louisville. Louisiana: Covington, Gueydan, New Orleans, Raceland, Sam Houston State Park, Tallulah. Maryland: Baltimore,

Bladensburg, Chesapeake Beach, Cobb Island, College Park, Hancock, Hebbville, Marlboro, Marshall

Hall, Plummers Island, Reisterstown, Takoma

Park, Upper Marlboro. Michigan: Detroit, Galien,

George Reserve, Gold Lodge, Paw Paw. Mississippi:

Biloxi, Gulfport, Vicksburg. Missouri: St. Louis,

Stanton. Nebraska: Brown County, Lincoln, Plattsmouth. New Jersey: Avenel, Brown Mill, Clifton,

Collingswood, Emerson, Gloucester, Great Peace

Meadow, Hillsdale, Lakaway, Lakehurst, Medford,

New Lisbon, Ocean City, Prospertown, Riverdale,

Sea Island City, Troy Hills, West Creek, Westville,

Wildwood, Woodbury. New York: Catskill Mts.,

Ithaca, Peekskill. North Carolina: Bryson City, Hot

Springs (French Broad River), Raleigh, Robeson

County, Tryon, Valley of Black Mountains. Ohio:

Adams County, Cleveland, Washington County.

Oklahoma: Lake Texhoma (Willis), Marshall

County. Pennsylvania: Allegheny, Boyertown,

Philadelphia Neck, Pittsburgh, Tinicum. South

Carolina: Aiken State Park, Bennettsville, Charleston, Clemson, Colleton County, Columbia, Earls

Ford, Fish Hatchery (Oconee County), Florence,

Gramling, Pickens, Poinsett State Park, Summerville, Walterboro. Tennessee: Benton County,

Dyersburg, Knoxville, Memphis, Reelfoot Lake.

Texas: Atlanta, Brownsville, College Station,

Limpia Creek Canyon (Davis Mts.), Waring. Virginia: Arlington, Camp Pickett, Mount Vernon,

Nelson County, Norfolk. West Virginia: Kanawa,

White Sulphur. Wisconsin: Nekoosa (Wood County). Canada: Quebec: Barthierville, Granby, Joliette, La Trappe, Rigaud. Ontario: Ottawa.

REMARKS.—This very small, slender species is

identified by the clypeus being rounded each side

of the median emargination, the elongate lines of

punctures of the head, the cariniform intervals of

the elytra, and the complete posterior femoral line

of the middle femora. Ataenius nocturnus is very

closely allied but has only a short posterior line

on the middle femora and evenly rounded elytral

intervals. Ataenius nocturnus is a western and

southwestern species, occurring in California, Arizona, New Mexico, and Texas. Ataenius gracilis

occurs in states north of Texas into South Dakota

and in all eastern states north into Canada.

44. Ataenius nocturnus (Nomura)

Saprosites nocturnus Nomura, 1943:77.

Ataenius gracilis.—Nakane, 1961:26 [not Melsheimer, 1844:

137].

Ataenius nocturnus.—Cartwright and Gordon, 1971:271.

DESCRIPTION.—Length 2.8 to 3.6 mm; width 1.0

to 1.3 mm. Moderately shining, piceous, legs and

sometimes anterior margins of head and pronotum

reddish, elongate, parallel, only weakly convex.

Antennae testaceous. Head convex, dypeal margin

very finely reflexed, rounded each side of broad,

shallow, median emargination, sides very weakly

arcuate to right-angled genae; surface shining and

slightly uneven close to median emargination, elsewhere with close, elongate punctures united in lines

except at middle oi occipital area where the somewhat larger punctures are round in shape, punctures dense everywhere, separated by less than their

diameters. Pronotum nearly quadrate, averaging

about 1.1 mm wide, 0.8 mm long; base and sides

finely margined, without marginal setae, anterior

angles rounded, posterior angles very broadly

rounded; surface closely punctate, the punctures

generally moderate in size, a little finer near lateral

and anterior margins, a trifle larger and shallower

near lateral foveae, midline distinct and deeper over

basal half, the punctures here practically uniting

in a narrow row. Elytra averaging about 2.0 mm

long and 1.2 mm wide, humeri finely dentate,

striae deep, finely crenate-punctate intervals convex with median row of minute punctures, minutely alutaceous along inner edge, sutural interval

flat with row of close, fine punctures, lateral intervals not noticeably different. Mesosternum broadly

carinate between the coxae. Metasternum smooth

and shining on disc, midline strong and deep, punctures moderately coarse and close anteriorly, much

finer posteriorly, scabriculate at sides. Metasternal

triangle deep, sharply defined anteriorly, finely
70

alutaceous within. Abdonimal sterna finely fluted

along anterior margin, surface with scattered, fine

to very moderate, evenly spaced punctures generally separated by one or two diameters, suture

in front of 5th sternum unusually and noticeably

deep. Pygidium with deep basal line, disc and

apical area very finely, closely punctate. Anterior

femora with perimarginal groove, surface with

scattered, coarse, shallow punctures separated by

one diameter or less. Middle femora shining; scattered, very fine punctures, posterior marginal line

short, one-third length of femur. Posterior femora

similiar but with marginal line still shorter. Hind

tibia without accessory spine, fringe of nine short,

close setae, tarsus shorter than tibia, first tarsal

segment one-fourth longer than long spur, equal

to following three segments combined. The male

pygidium is longer and the 5th abdominal sternum

is shorter than in the female. The male 5th sternum

also tips inward anteriorly.

NEOTYPE MALE (present designation).—Male,

USNM No. 71443. Original holotype and type

series were destroyed during World War II.

TYPE-LOCALITY.—Saipan. The neotype bears the

following data: "Saipan I., Marianas, As Mahetog

area, 1:I;45. Col. & Pres. by Henry S. Dybas. Lot

449."

SPECIMENS EXAMINED.—175 + .

DATES COLLECTED.—March 8 to December 14.

DISTRIBUTION (Figure 19).—Arizona: Arlington,

Arivaca, Buckeye, Cochise County, Colossal Cave

Park (Pima County), Douglas, Fort Yuma, Gila

Valley, Globe, Graham Mts., Granite Reef Dam,

Hot Springs, Madera Canyon (Santa Rita Mts.),

Patagonia, Phoenix, Portal, Riverside, Roosevelt

Lake, Sabino Canyon (Santa Catalina Mts.), Safford, Tortolita Mts. (Cottonwood Canyon), Willcox, Playa, Yuma. California: Berkeley, Colorado

Desert, Fresno, Holtville, Kaweah, Kern County,

Los Angeles, San Bernardino, Sonoma County,

Three Rivers, Visalia, Willows, Yuma. New Mexico: Albuquerque. Texas: Big Bend National Park,

Lajitas, Limpia Creek Canyon (Davis Mts.).

REMARKS.—Superficially, A. nocturnus (Nomura)

is very close to A. gracilis but differs in having the

elytral intervals rounded, not subangulate as in

A. gracilis, in having the marginal line of the

middle femur abbreviated, rarely over half the distance from the knee, not complete as in A. gracilis,

and the 5th abdominal sternum smooth in front,

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

the fine punctures sometimes only in a narrow

terminal band while in A. gracilis the punctures

are scattered all over the segment.

Ataenius nocturnus is widely distributed over

Pacific Islands.

45. Ataenius sculptor Harold

Ataenius sculptor Harold, 1868:85 Schmidt, 1922:426.

Ataenius oblongus Horn, 1871:286; 1887:81 Schmidt, 1922:

426. [New synonymy.]

DESCRIPTION.—Length 5.2 to 6.1 mm; width 2.4

to 2.6 mm. Elongate-oblong, moderately convex,

shining, black, clypeal margin and legs slightly

reddish. Head only moderately convex, finely reflexed anterior clypeal margin broadly rounded

each side of wide, moderately deep median emargination, sides weakly arcuate to nearly rightangled genae; clypeal surface smooth, shining,

narrowly concave at middle along anterior margin;

densely punctate over remainder of clypeus and

front, minutely punctate along smooth anterior

margin but very quickly becoming moderately

coarse, a little smaller over median convexity, very

dense and a little larger between middle and genae,

very moderate along edge in front of the eye.

Pronotum approximately two-thirds as long as

wide, sides and base margined, minutely fimbriatecrenate under moderate magnification, the setae

extremely short and widely spaced, very inconspicuous, anterior angles very obtusely rounded, sides

practically straight, hind angles slightly emarginate,

base not quite evenly arcuate; surface closely,

coarsely punctate everywhere except along anterior

margin where the punctures are gradually finer,

separated on disc by one diameter generally, very

dense laterally. Elytra approximately two-thirds as

wide as long, humeri strongly, sharply dentate,

sides slightly but noticeably arcuate, striae strong

and deep, strial punctures crenating inner sides of

intervals, the strial punctures separated by about

five times their diameters; intervals on disc moderately convex, laterally more carinately convex,

with a row of very noticeable, moderate, minutely

setigerous punctures along each margin of the interval, closer on outside edge on disc and very close

on both sides on lateral intervals, 10th interval

flat, alutaceous, with a median row of small, close,

shiny tubercles; shoulders closely moderately punctate; striae becoming wider and the intervals
NUMBER 154

FituRF. 19.—Distribution of Ataenius nocturnus (Nomura) and A. gracilis Melsheimer.

• nocturnus • gracilis

carinately convex with narrow alutaceous shoulder

over the apical declivity. The alutaceous shoulders

are traceable forward as very thin marginal lines

to near the middle of the elytra. Mesosternum

shagreened as in most species, finely carinate between coxae. Metasternum with long, fine, rather

shallow midline, disc densely, moderately coarsely

punctate, the punctures extending outward to wide,

scabrous area at sides, metasternal triangle rather

shallow, finely scabrous within. First visible abdominal sternum with rather wide, alutaceous,

posterior marginal lines. All remaining sterna

fluted along anterior margin, the fluting of the first

very fine, of the next quite long, of the 4th sternum

very wide and long and longer at sides, those of the

5th sternum at middle as long as at sides on 4th;

surface of the two widest sterna convex, densely

punctate from side to side, very moderate in front

to moderately coarse along posterior where they

almost touch and form a marginal line; punctures

of 4th sternum more moderate in size with marginal row very close and smaller; punctures of 5th

sternum close and a little smaller, with an alutaceous groove along outer third of posterior margin.

Pygidium with shining, finely, closely punctate

apical lip, the disc rough and unusually deeply

eroded. Anterior femora with perimarginal groove,

surface densely, scabrously punctate. Middle femora

densely, moderately punctate with three or four

coarse setigerous punctures at knee and complete,

strong posterior marginal line. The posterior

femora as in the middle femora but the punctures

not dense, separated by one to two diameters, posterior line strong, deep, and complete. Posterior

tibial apical fringe of eight short, close, heavy

setae, a very strong accessory spine, and an intervening seta between spine and spurs. Long spur

about one-fourth shorter than the very long

metatarsus which is as long as the following four

segments combined. The 4th and 5th sterna are

relatively shorter and the pygidium longer in the

male.

HOLOTYPE.—In Harold collection, Museoim National d'Histoire Naturelle. [Type of A. oblongus
72

Horn in the Leconte Collection, Museum of Comparative Zoology, No. 8097.]

TYPE-LOCALITY.—Colombia. [Type-locality of

oblongus: California.]

SPECIMENS EXAMINED.—Two, plus numerous

Mexican specimens.

DATES COLLECTED.—August 17 to September 21,

in Mexico.

DISTRIBUTION (Figure 20).—Arizona: Nogales.

California: "California."

REMARKS.—This species is easily recognized

among United States specimens by its large size,

emarginate posterior pronotal angles, and dense

punctures of head and pronotum with rather

roughly sculptured elytra.

46. Ataenius woodruffi, new species

DESCRIPTION.—Holotype: Length 6.4 mm; width

2.9 mm. Oblong, moderately convex, shining, black

with faint tinge of red, clypeus and legs only

slightly more reddish. Head moderately convex,

finely reflexed clypeal margin broadly rounded

each side of moderate median emargination, sides

nearly straight to wide-angled genae, about 125°;

surface feebly, transversely wrinkled anteriorly,

clypeus over and above convexity very finely,

closely punctate throughout, punctures generally

separated by their diameters, and with a group of

about twenty coarse, close, intermixed punctures

extending down from base on each side of convexity, separated by one to two times their diameters; front with transverse band of close, coarse

punctures mostly separated by half their diameters

or less; the genae are unusual, being flat, finely

alutaceous, and extending posteriorly into a deep

hole or pit to the eye. Pronotum weakly convex,

length 1.8 mm, width 2.6 mm, anterior angles

widely obtuse, posterior angles slightly emarginate,

base somewhat angularly arcuate, sides and base

margined, edge entire at sides, posterior angles and

base fimbriate-crenate, the crenations fine, the setae

fine and short, mostly separated by more than their

length; surface with mixed minute and coarse punctures, the coarse punctures crowded approaching

the angles from middle, disc much less crowded,

irregularly separated on disc by less than one to

several times their diameters, a little finer at anterior margin. Elytra 4.1 mm long and 2.9 mm

wide, humeri sharply dentate, elytral striae wide,

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

deep, shining, with deep strial punctures slightly

crenating the intervals; intervals with very narrow, flat, alutaceous shoulder, the middle evenly,

strongly convex on disc, more sharply convex over

apical declivity and carinately convex over lateral

intervals; intervals very minutely, closely punctate

under high magnification; humeri coarsely closely

punctate, as in most species the crenations of the

intervals are always a little posterior to the strial

punctures rather than exactly opposite. Mesosternum shagreened, surface finely alutaceous, with

close, fine, short, appressed hair; carinate between

the coxae. Metasternum with long, strong, deep

midline, deeper at ends, especially at anterior end;

disc shining, closely, moderately punctate, separated by their diameters or less, a little finer

anteriorly, outward to sides quickly scabrously

punctate, the poorly developed metasternal triangle

more finely scabrous. First two visible abdominal

sterna with fine posterior marginal lines, last four

with fluting along anterior margin, the fluting

longer on each following sternum, that of 5th

sternum half as long as sternum at middle; surface

otherwise closely, coarsely, shallowly punctate from

side to side and very finely alutaceous even in the

shallow punctures. Pygidium with narrow, shining

apical margin; disc deeply eroded. Anterior femora

with perimarginal groove, surface densely punctate

with moderately coarse punctures. Middle and hind

femora closely, moderately coarsely punctate, posterior marginal lines deep and complete. Apical

fringe of posterior tibia with a close group of five

short setae and a strong accessory spine. Long

spur shorter than metatarsus but longer than the

middle three tarsal segments combined. Sex not

determined but probably a female.

HOLOTYPE.—USNM 71746.

TYPE-LOCALITY.—The unique holotype taken at

Flagler Beach, Flagler County, Florida, 18 May

1954, in mosquito light trap, R. E. Woodruff collection.

DISTRIBUTION.—See Figure 12.

REMARKS.—The elytra of Ataenius woodruffi are

similar to those of A. impiger Schmidt (1916:104)

and A. laterigranulatus Balthasar (1941:166), but

the very peculiar and unique form of the genae

will determine the species at once. It is also our

largest species. I name it in honor of R. E. Woodruff, who obtained the only known specimen.
NUMBER l.r

>4 73

FIGURE 20 Distribution of Ataenius simulator Harold, A. inquisitus Horn,

and A. sculptor Harold

• simulator • inquisitus • sculptor

47. Ataenius robustus Horn

Ataenius robustus Horn, 1871:285; 1887:80—Schmidt, 1922:

427.

DESCRIPTION.—Length 3.8 to 4.7 mm; width 1.9

to 2.4 mm. Oblong-ovate, convex, shining, black,

legs reddish. Head moderately convex, edge of

clypeus finely reflexed, broadly rounded each side

of shallow median emargination, sides feebly arcuate to sharply rounded, right-angled genae; surface

of clypeus everywhere closely, uniformly, moderately punctate, the punctures generally separated

by less than their diameters, those of the frontaloccipital area a trifle smaller and a little closer.

Pronotum about three fifths as long as wide, anterior angles obtusely rounded, posterior angles

broadly, evenly rounded, sides and base margined,

the edge minutely crenate-fimbriate, the setae a

little more conspicuous around posterior angles;

surface everywhere densely, moderately punctate,

punctures on the disc sometimes elongate. Elytra

convex, short, sides arcuate, four-fifths as wide as

long, humeri strongly dentate, striae strong, intervals flat, densely, moderately punctate as on head

and pronotum, 9th interval strongly convex, punctures minutely setigerous with the setae most noticeable laterally and over the apical declivity.

Mesosternum shagreened with fine, alutaceous

sculpture and very fine, short, appressed hair, rarely

broadly, weakly convex between the coxae. Metasternum short, midline moderately deep, disc frequently transversely depressed, especially in males,

surface shining, punctures variable in size, usually

separated by one or two times their diameters, similar but closer punctures outward to scabriculate

area at sides, the metasternal triangle shallow, more

transverse than in most species, sometimes absent.

First visible abdominal sternum with posterior

marginal line, remaining four sterna finely fluted

along anterior margin, punctate from side to side,
74

2nd sternum with close, very moderate punctures

over anterior two-thirds, the punctures fine at middle, smooth and impunctate posteriorly, punctures

of remaining sterna finer and less close. Pygidium

with shining apical lip, disc roughly alutaecous,

flattened to somewhat convex, not deeply eroded.

Anterior femora with perimarginal groove, surface

shiny, finely, closely punctate. Middle and hind

femora with scattered, fine punctures, fewer along

anterior margin, two or three coarse, setigerus

punctures at the knee, posterior marginal line,

fine, not deep, but seen from rear, slightly less than

half the length of the femur. Posterior tibial apical

fringe of four setae, accessory spine, and an intervening seta between spine and spurs. Males have

the anterior spur hooked at apex, the 4th and 5th

abdominal sterna about half as long as the preceding sternum, and the pygidium comparatively

much longer than in the female.

HOLOTYPE.—In Museum of Comparative Zoology, LeConte Collection.

TYPE-LOCALITY.—"Missouri."

SPECIMENS EXAMINED.—35.

DATES COLLECTED.—March 9 to June 27.

DISTRIBUTION (Figure 13).—Arkansas: Carlisle,

Hope, Little Rock, Washington County. Illinois:

Bond County, Elizabethtown. Iowa: Davis County,

Iowa City, Keokuk, Mt. Pleasant, Scott County.

Kansas: Onaga, Topeka. Missouri: Dardene Prairie,

St. Louis, Sedalia. Nebraska: Fairmont, Lincoln,

West Point. New Mexico: Mesilla (listed by Fall

and Cockerell, 1907:186). Oklahoma: Stillwater,

Vinita. South Dakota: White Lake. Wisconsin:

Lamont.

REMARKS.—Ataenius robustus is unusual in having the entire upper surface—head, pronotum, and

elytra—practically uniformly, closely, moderately

punctate. The very short metasternum is notable

also.

48. Ataenius simulator Harold

PLATE lfe

Ataenius simulator Harold, 1868:85.—Cartwright, 1964:103.

Psammodius schwarzi Lincll, 1896:721.—Cartwright, 1964:103.

Ataenius schwarzi Brown, 1928:307.

DESCRIPTION.—Length 3.7 to 4.9 mm; width 1.6

to 2.3 mm. Oblong, convex, shining, dark castaneous to piceous. Head convex, finely reflexed clypeal

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

margin slightly angulate to subdentate but often

appearing rounded each side of wide, moderate,

median emargination, sides straight or weakly arcuate to right-angled genae; clypeal surface transversely, coarsely wrinkled, the wrinkles usually

broken in part into elongate tubercles, front with

transverse band of very moderate punctures separated in general by about their diameters; genae

with four or five noticeable setae. Pronotum convex, three-fourths as long as wide, anterior angles

obtusely rounded, posterior angles more broadly

rounded, the slightly arcuate sides usually slightly

sinuate, base strongly margined, edges fimbriatecrenate, the crenations weak, the setae moderately

long, separated laterally by a little less than their

length; surface with mixed punctures, everywhere

with fine, evenly distributed punctures separated

by one or two diameters and very coarse punctures

unevenly distributed, mostly in the anterior and

posterior angles with a few scattered across the

base and above a smooth space at middle of sides.

Elytral width about two-thirds the length, convex,

sides slightly arcuate, humeri finely, weakly dentate; striae strong, the deep strial punctures

slightly crenating the inner margins of the moderately convex intervals, surface with irregular, marginal row of minute punctures along each side,

lateral intervals not different. Mesosternum shagreened, with very fine surface sculpture and extremely fine, short, decumbent hair, not strongly

carinate between the coxae. Metasternum shining,

midline fine, only moderately impressed, very finely

punctate, with punctures generally separated by

about two or three times their diameters, a little

rough sculpture at extreme sides, metasternal triangle elongate and deepest along posterior margin.

First visible abdominal sternum with fine posterior

marginal line, remaining lour sterna finely fluted

along anterior margin, the fluting longer on successive sterna, that of middle sternum slightly

longer at sides, of the 5th sternum longer at middle;

surface almost impunctate at middle, a few coarse,

shallow, setigerous punctures at sides; 5th sternum

with a row of three or four close, moderate, more

conspicuously setigerous punctures each side.

Pygidium with smooth, apically wide lip, disc

finely, scabrously eroded, with a few scattered, long

hairs. Anterior femora with perimarginal groove,

anterior and posterior margins bearing long, fine

setae, surface shining, finely punctate, the punc-
NUMBER 154 75

tures separated by two or more diameters; anterior

tibiae broader than usual. Middle and hind femora

smooth, shining, very finely punctate, three or four

coarse setigerous punctures at knee, without posterior femoral line. Posterior apical tibial fringe,

seven or eight rather short setae, short, triangular

accessory spine and an intervening seta between

spine and spurs. Posterior metatarsal segment

shorter than long spur, longer than following three

segments combined. Male pygidium much longer

than that of the female.

HOLOTYPE.—In Museum National d'Histoire

Naturelle.

TYPE-LOCALITY.—Mendoza, Argentina.

SPECIMENS EXAMINED.—1000 +.

DATES COLLECTED.—January 12 to December 25.

DISTRIBUTION (Figure 20).—Alabama: Auburn,

Crossville, Dadeville, Dale County, Dothan, Escambia County, Fairhope, Florala, Florence, Grand

Bay, Gulf State Park, Mobile, Monte Sano State

Park, Repton (near Helena), Theodore. Florida:

Arcadia, Archbold Biological Station, Archer,

Bradenton, Chipley, Clermont, Daytona Beach,

Dunedin, Dunnellon, Flagler Beach, Gadsden

County, Gainesville, Glen St. Mary, Highland

Hammock State Park, Inglis, Jackson County, Jacksonville, Jay, Jefferson County, Kissimmee, La Belle,

Lake Alfred, Lake County, Lake Letta, Lake Wales,

Loch Harbor, Longwood, Manatee Springs State

Park, Marion County, Mayport, Monticello, Ocala,

Oneco, Orlando, Pensacola, Punta Gorda, Quincy,

Saint Andrews State Park, Sanford, Santa Rosa

County, Seminole County, Silver Lake Recreation

Area (Leon County), Tallahassee, Tall Timbers

Research Station, Tampa, Wachulla, West Palm

Beach, Winter Haven, Winter Park, Zolfo Springs.

Georgia: Americus Ashburn, Atlanta, Augusta,

Beachton, Brookhaven (De Kalb County), Demorest, Dougherty County, Experiment, F. D. Roosevelt State Park, Hinesville, Manchester, Monticello,

Nashville, Newton, Peach County, Ranger, Smithville, Thomas County, Tifton, Upson County,

Valdosta, Ware County, Waycross. Maryland: Beltsville, Marlboro, Scotland (St. Marys County). Mississippi: Brooklyn, Camp Shelby, Gulf port, Horn

Island, Keesler Field, Lucedale, near Ludlow

(Leake County), Mount Olive, Pearl (Rankin

County). North Carolina: Balsam, Camp Lejeune,

Catawba County, Duplin County near Calypso,

Edenton, Faison, Franklin, Geston Lake, Hanging

Rock State Park, Raleigh, Shell Landing (Carteret

County). South Carolina: Aiken, Allendale, Blackville, Charleston, Clemson, Clinton, Colleton

County, Columbia, Florence, Folly Beach, Hunting

Island, Isle of Palms, Lancaster, Litchfield Beach,

Myrtle Beach, Paris Island, Pickens, Ridgeland,

Ritter, Saluda County, Sandy Springs, Summerton,

Walterboro, Yemassee. Tennessee: Burrville, Cardwell Mtn. (Warren County), Citco, Cookeville,

Crossville, Franklin County, Harrison Bay State

Park (Hamilton County), Knoxville, Lincoln

County, Loretto, Meigs County, Monroe County,

Ooltewah, Smyrna. Utah: Cedar City. Virginia:

Camp Pickett, Chatham, Cumberland County,

Gloucester, Hampton, Holland, Jamestown, Langley Field, Norfolk, Prince Edward County, Sussex,

Williamsburg.

REMARKS.—This species is rarely if ever a dung

feeder. It is attracted to light, sometimes in enormous numbers. I once collected about 275,000

specimens in a trap light in a single night. The

species seems to be spreading westward and northward from southeastern United States. I have seen

specimens from several countries in South America

and from Australia.

Diagnostic characters include the very distinct,

coarse transverse granules covering the clypeus,

the few very coarse punctures near pronotal angles

and base of pronotum, and the wide middle and

hind femora without posterior marginal lines.

Jerath (1960:77) described the larva under the

name A. schwarzi (Linell).

49. Ataenius erratus Fall

Ataenius erratus Fall, 1930:96.—Cartwright, 1948:149.

DESCRIPTION.—Length 4.4 to 5.9 mm; width 1.9

to 2.5 mm. Elongate, oblong, piceous-black, shining, more convex posteriorly. Head weakly convex,

clypeus broadly rounded each side of wide, shallow,

median emargination, sides nearly straight to rightangled genae, edge finely reflexed, clypeal surface

finely, evenly punctate, the punctures separated by

about twice their diameters, in some individuals

more or less vague transverse rugulae anteriorly,

front with band of scattered, slightly larger punctures usually less close at middle. Pronotum only

slightly convex, one-third wider than long, anterior

angles rounded, posterior angles broadly rounded
76 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

from arcuate sides into the slightly sinuate base,

lateral and basal margin moderate, fringe of moderately long setae slightly crenating the edge, the

setae separated by less than their lengths; surface

with mixed moderately coarse and very fine punctures throughout, discal area with irregularly

spaced, coarse punctures separated by less than one

to several times their diameters, closer, more evenly

spaced at sides. Elytra slightly more than two and

one-half times as long as pronotum, humeri not noticeably dentate, convex, the margins not visible

from directly above, slightly wider than pronotum;

striae fine, finely punctate, weakly crenating the

moderately convex intervals, surface of intervals

with scattered, very fine punctures and minute,

alutaceous sculpture, lateral intervals not different

from others. Mesosternum without noticeable

carina between coxae. Metasternum with disc shallowly, widely concave, midline not impressed, surface shining, smooth, with scattered fine punctures

separated usually by three or four times their diameters, minutely alutaceous outward to a little

scabrous sculpture at extreme sides, metasternal

triangle weak and inconspicuous. Abdominal sterna

flattened medially, minutely alutaceous, with scattered, very fine punctures, generally separated by

three or four times their diameters, slightly larger

laterally, the last two sterna narrowly scabrous at

extreme sides, very finely fluted along anterior margins as usual, 5th sternum about two-thirds as long

at middle on preceding sternum. Pygidium with

rather wide, convex, apical lip, eroded area roughly

sculptured. Anterior femora with perimarginal

groove, surface finely alutaceous with scattered,

fine-to-moderate punctures; tibial spur of male

incurved at tip. Mesofemora minutely alutaceous,

scattered, very fine punctures, three setae at knee,

posterior marginal line complete, decreasing in

depth to trochanter and arching forward and

widening in an unusual way. Metafemora similar

to middle femora but posterior femoral line only

one-half to two-thirds distance to trochanter and

not arching forward at inner end. Middle and posterior tarsi longer than tibiae. Posterior tibial

fringe of eight to ten close, moderately long setae,

accessory spine very short, close to spurs without

intervening seta. First segment of posterior tarsus

longer than long spur, about equal to following

three segments combined.

The female anterior tibial spur is straight, not

incurved, the abdominal sterna are convex, and the

pygidium is relatively shorter.

HOLOTYPE.—Museum of Comparative Zoology,

No. 24769.

TYPE-LOCALITY.—Enterprise, Florida.

SPECIMENS EXAMINED.—375 +.

DATES COLLECTED.—May 31 to August 22.

DISTRIBUTION (Figure 10).—Alabama: Auburn.

Florida: Crescent City, Gainesville, Haw Creek,

Hillsborough County, Marion County, Ocala, Tallahassee, Tall Timber Research Station, Williams

Landing (Tayior County). Georgia: Arlington,

Beachton, Macon, Norwood, Savannah. Mississippi:

Gulfport. North Carolina: Swan Quarter. Ohio:

Champaign County. South Carolina: Aiken, Anderson, Beaufort County, Blackville, Charleston, Clemson, Clinton, Florence, Gramling, Hilton Head,

Marion, Moncks Corner, Sandy Springs, Silverstreet, Tigerville, Yemassee. Texas: Bishop (Nueces

County).

REMARKS.—Ataenius erratus Fall is a little above

average in length, has relatively short pronotum

and long elytra, has unusually long tarsi, has more

setae in the posterior tibial fringe, and is one of

the few species with the accessory spine close to the

spurs without an intervening seta. The posterior

femoral line of the middle femora is very unusual

in arching forward away from the margin. Most

specimens have been collected in South Carolina,

Georgia, and Florida.

The larva of A. erratus was described by Jerath

(1960:77).

50. Ataenius inquisitus Horn

Ataenius inquisitus Horn, 1887:81.—Schmidt, 1922:424 Fall,

1930:97—Cartwright, 1948:149.

DESCRIPTION.—Length 3.9 to 4.9 mm; width 1.7

to 2.0 mm. Oblong, moderately convex, shining,

dark red-brown to piceous, anterior of head and

legs reddish, antennae testaceous. Head moderately

convex, clypeus broadly rounded each side of wide,

shallow, median emargination, sides weakly arcuate

to sharply rounded genae, the genae a trifle more

than right-angled, edge very finely reflexed; surface

transversely wrinkled anteriorly, usually over the

greatest convexity, very finely, closely punctate

above the wrinkles, punctures generally separated
NUMBER 154

by about twice their diameters. Pronotum moderately convex, averaging about 1.8 mm wide by 1.1

mm long, all angles obtusely rounded, sides weakly

arcuate, sides and base strongly margined, fimbriatecrenate, the setae short to minute, longest at anterior angles, basally minute, crenations distinct

around posterior angles and base; surface punctures

mixed, very fine everywhere, larger punctures scattered over anterior disc where they may be fine to

very moderate, outward to sides and base gradually

closer and much coarser, practically contiguous in

the anterior and posterior angles. Elytra convex,

averaging about 2.8 mm long by 1.9 mm wide,

humeri moderately dentate, striae moderately

deep, strial punctures crenating inner margin of

weakly convex intervals, intervals with a row of

minute punctures along each side, intervals a little

more convex and striae wider over apical declivity.

Mesosternum shagreened with fine alutaceous

sculpture and fine, short, appressed hair, very

weakly carinate between the coxae. Metasternum

shining, midline strong and deep, disc smooth but

with minute, scattered punctures, bordered posteriorly by a row of close coarse punctures which

turns outward to sides behind the middle coxae,

becoming two or three punctures wide near side

where they merge with very shallow punctures and

rough alutaceous sculpture, metasternal triangle

smooth, not deep or well defined. Abdominal sterna

closely, coarsely punctate from side to side, a little

finer at middle and on 5th sternum, fluted along

anterior margins. Pygidium with shining apical

lip, disc roughly eroded. Anterior femora with perimarginal groove, surface smooth in front, posteriorly with well-separated, moderate, elongate

punctures. Middle and hind femora smooth, shining, minutely punctate, one or two finely setigerous,

coarse punctures at knee, strong posterior marginal

line half length of femur inward from knee, middle

femora have also a few coarse punctures along anterior margin at knee. Posterior tibiae with fringe

of five setae in a group, strong accessory spine close

to spurs without an intervening seta. First posterior

tarsal segment longer than the long spur, longer

than following three segments combined. Males

have the terminal segment and the pygidium relatively longer than in the female.

HOLOTYPE.—No. 3612, Academy of Natural Sciences of Philadelphia, Horn Collection.

77

TYPE-LOCALITY.—"Southwestern Texas."

SPECIMENS EXAMINED.—22+.

DATES COLLECTED.—April 26 to November 15.

DISTRIBUTION (Figure 20).—Arizona: Paradise.

Wisconsin: "Wisconsin." Texas: Alpine, Austin,

Big Bend National Park, Brownsville, Chisos Mts.,

Columbus, Cypress Mills, Dallas, Davis Mts., Devils

River, Enchanted Rock, Handly, Houston, Juniper

Canyon, Limpia Canyon (Fort Davis), Menard,

Nueces River (Zavalla County), San Diego.

REMARKS.—The pattern of punctures on the

head, pronotum, and metasternum and the lack of

a fringe seta between the accessory spine and spurs

separate this species from related species in the

United States. Ataenius chapini Hinton (1937a:3),

from Panama, is very closely related, the two species

having an uncommon form of male aedeagus (see

Figure 24a-d). It also bears a very close superficial

similarity with A. nugator Harold (1880:41).

51. Ataenius griffini, new species

DESCRIPTION.—Holotype Male: Length 3.5 mm;

width 1.5 mm. Dark reddish brown, shining, convex, oblong. Antennae dark castaneous. Head convex; clypeus rounded and slightly angulate but not

dentate each side of deep median emargination,

sides weakly arcuate to right-angled genae, margin

very finely reflexed, arched upward at middle leaving a flat, closely, minutely punctate surface between the two edges; entire head surface smooth

except for very fine, uniformly distributed punctures throughout, the punctures separated by about

three to five times their diameters. Pronotum convex, middle of side margins not visible from

directly above, length 0.9 mm and width 1.4 mm,

anterior angles obtuse, hind angles distinct, not

broadly rounded, sides and base strongly margined,

not distinctly crenate, marginal setae very moderate, separated by their own length; surface with

mixed fine and scattered moderate punctures, the

latter separated by one to four or five times their

diameters, absent over median anterior third of

disc. Elytra convex, elongate-oval, width 1.5 mm,

length 3.5 mm, humeri finely dentate, striae fine,

moderately deep, fine strial punctures widely separated, very weakly crenating the convex intervals,

some minute, scattered punctures visible only

under high magnification, lateral intervals not dif-
78 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

ferent; lateral and apical elytral margins with very

inconspicuous, extremely fine, extremely short,

widely separated setae. Mesosternum carinate between the coxae. Metasternum smooth, shining,

midline fine, deeper at anterior end, disc with scattered, widely separated, minute punctures, a few

shallow, moderate punctures at sides, metasternal

triangle large, deep, alutaceous within. Abdominal

sterna shining, punctate from side to side, the

punctures moderate in size, slightly smaller at middle, generally separated by three or four times

their diameters, finely fluted along anterior margins

as usual, fluting of 5th sternum at middle much

deeper and one-third the length of sternum, 4th

sternum strongly narrowed at middle, about half

as long as at sides, 5th sternum with posterior row

of close, shallow, coarse punctures bearing long,

fine hair. Eroded area of pygidium also bearing ten

long, mostly marginal, hairs. Anterior femur with

perimarginal groove, surface smooth and shining.

Middle and hind femora similarly smooth and

shining, without posterior marginal groove. Hind

tibial fringe of eight close, short setae; short, triangular accessory spine and single seta between

accessory spine and spurs; first tarsal segment a

trifle shorter than long spur, longer than following

three segments combined.

HOLOTYPE.—USNM 71747.

TYPE-LOCALITY.—San Patricio County, Texas,

near junction of Texas Highway 9 and U.S. 77.

SPECIMENS EXAMINED.—Eight.

DATE COLLECTED.—August 16.

DISTRIBUTION (Figure 11).—Para types. Texas

(7): "Texas" (1, from Charles Schaeffer Collection

and mistakenly designated as a para type of Ataenius

convexus by Mark Robinson). San Patricio County

(6): collected with holotype in an animal burrow,

probably of an armadillo, 16 August 1969, Chas.

W. Griffin (5); same locality and date, under cow

dung (1).

REMARKS.—Ataenius griffini resembles A. convexus Robinson very closely, and the two may be

found together—one specimen of A. convexus was

taken in the same burrow with six specimens of

d- griffini. Ataenius convexus, however, has larger,

closer, more evenly distributed pronotal punctures,

shorter elytra with a conspicuous fringe of setae,

and the abdominal sterna are smooth and practically impunctate at middle. The male aedeagi

are very similar also (Figure 24e-h).

The species is named after its collector, Charles

W. Griffin of Corpus Christi, Texas, who has collected several other rare and interesting scarabs in

wood-rat nests and animal burrows.

52. Ataenius aequalis Harold

Ataenius aequalis Harold, 1880:40—Schmidt, 1922:435.

DESCRIPTION.—Length 3.6 to 5.0 mm; width 1.7

to 2.0 mm. Oblong-oval, convex, moderately shining. Head moderately convex; clypeus broadly,

moderately emarginate anteriorly, rounded each

side of emargination, sides nearly straight to rightangled genae, margin finely reflexed, noticeably

slightly wider each side of emargination; clypeus

with weak, transverse rugulae, the rugulae smaller

but still visible over greatest convexity to frontal

area, which is closely, very finely to finely punctate

basally. Pronotum rectangular, convex, anterior

and posterior angles obtusely rounded, very slightly

emarginate or sinuate behind posterior angles,

sides and base margined, crenate-fimbriate, crenations more noticeable laterally, setae noticeable,

twice as long as distance between them; surface

with close, mixed moderate and very fine punctures

throughout, the larger punctures generally separated by their diameters or less, a little smaller

anteriorly, a little closer in pronotal angles. Scutellum without punctures. Elytra two and one-half

times length of pronotum, convex, weakly shining,

minutely alutaceous under high magnification;

humeri finely dentate; striae fine, deep, crenatepunctate, crenations about width of striae, intervals

evenly convex, especially convex over apical declivity where striae are wider, intervals not differing laterally except that the 9th is higher and more

prominent posteriorly than the 10th, the latter is

flatter with a median row of very fine punctures

and intervening tubercles near posterior end.

Mesosternum shagreened, with very fine, short,

decumbent hair, carinate between coxae. Metasternum with moderately deep midline, disc shining, punctures very fine, uniformly distributed,

separated by two to four times their diameters,

finely scabriculate at extreme sides, metasternal

triangle nearly smooth, moderately deep. Abdominal sterna shining but finely alutaceous under high

magnification, quite uniformly, shallowly, moderately punctate, the punctures separated by their
MUMBKR 154

diameters, fluted along anterior margins, fluting

of 5th sternum about one-third total length, surface very finely punctate over remaining area.

Pygidium in most cases with a fine longitudinal

carina dividing the eroded area, apical borders

convex, shining, minutely punctate, wider at middle. Profemora with perimarginal groove, shining

but with close, coarse punctures except at inner

anterior angle. Middle and hind femora shining,

very finely punctate, the punctures separated by

three or four times their diameters, posterior

femoral line apparently lacking, but actually visible

about half the length of the femur when viewed

from behind. Posterior tibial fringe with a group

of five setae, a very short accessory spine onehalf the length of the fringe setae, and an intervening setae between spine and spurs; first

tarsal segment subequal to long spur and a trifle

longer than following three segments combined.

LECTOTYPE (present designation)—In Museum

National d'Histoire Naturelle.

TYPE-LOCALITY.—Colombia, "Ambalema."

SPECIMEN EXAMINED.—One.

DATE COLLECTED.—Unknown.

DISTRIBUTION (Figure 21).—"Louisiana."

REMARKS.—This species is included in the

present paper on the basis of a single specimen in

the Naturhistorisches Museum, Vienna, Austria,

bearing the label "Louisiana, N. America." It is

very similar to A. integer and A. platensis but may

be separated by characters given in the key. The

male aedeagus is quite different from A. platensis,

as shown in Figure 24i-/.

53. Ataenius integer Harold

Ataenius integer Harold, 1868:86.

Ataenius platensis.—.Schmidt, 1922:434 [not Blanchard, 1846:

185].

DESCRIPTION.—Length 3.6 to 4.8 mm; width 1.5

to 1.9 mm. Oblong, shining, black with anterior

margins of pronotum, legs and usually most of the

clypeus reddish brown. Antennae light yellow.

Head moderately convex, clypeus broadly rounded

each side of moderate, median emargination, sides

slightly arcuate to sharply rounded, slightly more

than right-angled genae, head margin finely reflexed, very slightly wider and higher each side of

median emargination; surface finely, transversely

79

wrinkled anteriorly, finely, closely punctate above

greatest convexity, the punctures generally separated by about their own diameters, frontal area

with a transverse scattering of very moderate punctures two or three times as large as the fine clypeal

punctures. Pronotum approximately one-third

wider than long, moderately convex, base very

weakly sinuate, sides and base with strong marginal line, edge crenate-fimbriate, the crenations

scarcely visible, the setae moderately long anteriorly, the length decreasing slightly to basal sinuation,

suddenly extremely short then gradually longer

again opposite the scutellum; surface with mixed

very fine and moderately coarse punctures, the fine

punctures quite uniformly distributed throughout,

the coarse punctures everywhere but a little smaller

anteriorly at middle, somewhat fewer in number

at sides and on middle disc lengthwise front to

base, separated by about their diameters in areas

of greatest density. Elytra about one-third longer

than wide, moderately convex, sides subparallel,

humeri very moderately dentate; striae strong,

strial punctures deep, slightly crenating inner margins of the very weakly convex intervals, intervals

with minute, scattered punctures, lateral intervals

not noticeably different from the others. Mesosternum shagreened with minute alutaceous sculpture and fine, short, recumbent hairs, weakly carinate between the coxae. Metasternum smooth and

shining, midline long, strong, deep, ending anteriorly in a deeper pore, some rather widely scattered, minute punctures over disc and outward to

sides, extreme sides with narrow rugose area of

coarse, shallow, ill-defined punctures, metasternal

triangle smooth and not sharply defined. Abdominal sterna finely fluted along anterior margin, more

widely and deeply so on posterior sternum, coarsely, closely punctate at sides, gradually finer toward

middle where the punctures may be very fine or

even absent; pygidium with wide, convex, shining

apical lip, minutely punctate; remainder of surface deeply, roughly eroded. Anterior femora with

perimarginal groove, shining, finely but not closely

punctate anteriorly, much more coarsely punctate

posteriorly; first tarsal segment as long as next

two segments combined. Middle and hind femora

with scattered, minute punctures, shining, posterior femoral line about half the length of the

femur on middle femora, about one-fourth on the

posterior femora. Posterior tibial fringe a group
80 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 21.—Distribution of Ataenius fattigi Cartwright and A. aequalis Harold.

• fattigi it aequalis

of four close, moderate setae, an accessory spine

nearly as long, and a single seta intervening between the spine and spurs; first tarsal segment

longer than long spur, about equal to following

three segments combined. The spur of the anterior

tibia is bent downward at the tip in the male, the

4th abdominal sternum is narrowed and much

shorter at the middle, and the pygidium is longer

with a wider apical lip than in the female.

LECTOTYPE.—In Museum National d'Histoire

Naturelle.

TYPE-LOCALITY.—Brasilia.

SPECIMENS EXAMINED.—16.

DATES COLLECTED.—May 10 to August 22.

DISTRIBUTION (Figure 3).—Florida: Apopka,

Archbold Biological Station (Lake Placid), Avon

Park, Blatt (3i/2 mi SE), Chipley, Gainesville, Hillsborough, Miami, Orlando, Panama City, Parrish,

Tallahassee, Wewahitchka, Winter Haven. Texas:

Houston, Kerrville.

REMARKS.—Ataenius integer Harold is very similar to A. platensis, and some authors consider them

the same. Ataenius integer, however, has mixed

coarse and fine occipital punctures and the larger

pronotal punctures are quite evenly distributed

even in the anterior angles. They are a little smaller

in the anterior discal area of the pronotum but'

still noticeable. In A. platensis the punctures of

the occipital band are fine and uniform in size,

about as in the anterior discal area of the pronotum where coarser punctures are lacking. Some

specimens of A. spretulus could be confused with

A. integer but may be recognized by the smooth

profemur and patch of metasternal setae in the

male. Ataenius integer has the profemur strongly

punctate, the punctures doubled or crescentshaped and more elongate than in A. platensis.

The fovea on the ventral side of the front tibia in

A. integer is larger and deeper than in A. platensis

and parallels the outside edge, i.e., is directed inward toward the middle of the tibia.
NUMBER 154

54. Ataenius stephani, new species

PLATE 3a

DESCRIPTION.—Holotype Male: Length 5.1 mm;

width 2.2 mm. Oblong, piceous, shining, moderately convex, legs reddish brown. Head very moderately convex; clypeus rounded each side of

moderately deep emargination, sides finely reflexed,

straight to obtusely rounded, nearly right-angled

genae, surface very finely, transversely wrinkled

anteriorly, upper clypeus and frontal area evenly,

very finely punctate, the punctures separated by twice

their diameters, occipital area with scattered, slightly

larger punctures separated by one to six or more

times their diameters. Pronotum 2 mm wide and

1.4 mm long, moderately convex, sides mostly invisible from directly above, anterior angles rounded, posterior angles very broadly rounded, sides

and base arcuate, marginal line strong and deep,

marginal setae moderately long, separated laterally

by about their own lengths, gradually shorter and

closer posteriorly and around base, only very

slightly crenating the edge; surface with mixed

punctures, very finely, evenly punctate over anterior medial area and narrowly so inside marginal

groove, elsewhere with additional scattered, very

coarse punctures, these fewer and more irregularly

spaced in middle basal area, more concentrated

laterally. Scutellum normal. Elytra 3.2 mm long

and 2.2 mm wide, sides convex, humeri finely dentate, striae strong, deep, finely punctate, weakly

crenating the weakly convex intervals, surface

shining with scattered, minute punctures separated

generally by about three times their diameters,

lateral intervals not different. Mesosternum carinate between the coxae. Metasternum shining,

midline strong, ending in a deeper pore at each

end, disc with scattered, minute punctures anteriorly and laterally, posteriorly with a patch of dose,

very slightly larger punctures; smooth, shining,

impunctate outward to sides, metasternal triangle

deep and smooth, extreme sides minutely alutaceous. Abdominal sterna smooth and shining,

closely fluted along anterior margins, punctures

very minute and scattered at middle, then gradually fine to coarse at sides where they are separated

by their diameters or less. Eroded area of pygidium

about as wide as apical lip which is longitudinally

nearly as long as 5th sternum. Anterior femora

smooth, shining, with very minute punctures, peri81

marginal groove; tibiae crenate above the three

strong, evenly spaced lateral teeth; anterior spur

bent inward at tip. Middle and hind femora

smooth, shining, with scattered, very minute punctures, without posterior marginal line. Middle

tarsi slightly longer than tibiae, posterior tibiae

and tarsi about equal in length. Posterior tibial

fringe with a group of five setae, short accessory

spine, and an intervening seta between spurs and

accessory spine. Long spur, first tarsal segment,

and three following segments combined are subequal in length.

Allotype Female: Length 5.1 mm; width 2.2 mm.

I find practically no sexual differences except that

the spur of the anterior tibia is not bent inward

at the tip, the 5th sternum is comparatively longer,

the lip of the pygidium only half as long as the

5th sternum, and the eroded area of the pygidium

narrower at middle than in the male.

HOLOTYPE.—USNM 71748, collected with allotype female at black light between 2 and 16 September 1969 by K. Stephan.

TYPE-LOCALITY.—Tucson, Arizona.

SPECIMENS EXAMINED.—365.

DATES COLLECTED.—April 9 to September 19.

DISTRIBUTION (Figure 18).—Para types, all except

a single specimen collected by K. Stephan, mostly

at black light. Arizona (364): Colossal Cave Park,

Pima County (12), 4 August 1970. Nogales (1),

7 September 1957, T. R. Haig. Santa Catalina

Mountains (199): Bear Canyon (1), 6 August

1970; foothills (183), 21 June, 6 July, 19 August

1970; Molino Canyon (1), 26 August 1969; Pima

Canyon (14), 28 August 1970. Tucson (152), 6

April, 19 May, 11, 21 August 1968, 11 July, 26

August, 2 to 19 September, 1969, 1 May, 21. 28

July, 2 August 1970.

REMARKS.—The paratypes show only slight variation; length 4.8 to 5.8 mm. The metasternum outside the discal area may show very minute alutaceus

sculpture throughout. The slightly larger occipital

punctures of the head vary slightly in size and

number. Very few males were found among the

specimens. A few specimens show traces of a posterior marginal line on middle and posterior

femora. This shiny black species with bright red

dish legs is a very handsome beetle. The coarse

pronotal punctures around the smoother, finely

punctate anterior medial area give it a striking

appearance. Ataenius platensis has a similarly punc-
82 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

tate pronotum but shows less disparity in the size

of the punctures and is more slender, less robust

than A. stephani.

The species is named in honor of Karl Stephan

of Tucson, Arizona, who collected all the specimens except one.

55. Ataenius platensis (Blanchard)

Oxyomus platensis Blanchard, 1846:185.

Ataenius platensis Harold, 1876:95.—A. Schmidt, 1922:

434.—Hinton. 1937b: 177—Cartwright, 1948:149.

Ataenius anticus Fall, 1930:105.—Hinton, 1937b: 179 Cartwright, 1948:149.

DESCRIPTION.—Length 3.6 to 4.9 mm; width 1.5

to 2.0 mm. Oblong-elongate, shining, piceous, legs

and anterior margin of pronotum and head frequently reddish. Clypeal edge finely reflexed, the

edge slightly higher but not angulate and broadly

rounded each side of a very moderate median

emargination, sides slightly arcuate to sharply

rounded, nearly right-angled genae; surface transversely wrinkled except for a few very fine, close

punctures at upper edge of clypeus at middle;

frontal area similarly finely punctate, separated by

about their diameters, not quite so numerous at

base of head. Pronotum normally convex, threefourths as long as wide, sides and base strongly

margined, edge noticeably crenate at posterior

angles, fimbriate, the setae moderately long and

noticeable except across the base where they are

very short, longest at anterior angles where they

are twice as long as the distance between them;

anterior angles obtusely rounded, posterior angles

broadly rounded; surface with mixed punctures,

evenly distributed, very fine punctures everywhere,

and very moderately coarse punctures less regularly

and usually not closely spaced toward sides and

base, a few coarse punctures gradually smaller

toward anterior disc at middle where they are

usually lacking entirely. Elytra moderately convex,

two-thirds as wide as long, humeri finely dentate,

striae moderately fine and deep, fine strial punctures crenating inner margins of the weakly convex

intervals, lateral intervals not different, intervals

with minute punctures more or less in a row along

each margin, slightly more convex over apical

declivity. Mesosternum shagreened with fine alutaceous sculpture and fine, short, decumbent hair,

without strong carina between coxae, only slightly

convex. Metasternum with minute punctures, shining, midline strong and deep, a little rugosely

punctate sculpture at extreme sides, metasternal

triangle shining, without definite punctures but

surface very slightly uneven. First visible abdominal sternum with posterior marginal line, remaining four sterna finely fluted along anterior margin,

2nd, 3rd, and 5th sterna with posterior marginal

line at sides, very finely punctate at middle to

coarsely, deeply, closely punctate to sides. Pygidium

with very finely punctate, shining apical lip, disc

deeply, roughly eroded. Anterior femora with perimarginal groove, surface shining, minutely punctate anteriorly, posteriorly with ten or twelve

scattered moderate punctures. Middle and hind

femora smooth, shining, minutely punctate, two

or three coarse setigerous punctures at knee, posterior femoral line of middle femora half or more

of the femoral length, occasionally complete, posterior femoral line of hind femora usually half

or less than half the length of the femur. Apical

fringe of posterior tibiae five setae in a group, a

short accessory spine half their lengths and an intervening seta between spine and spurs. First posterior tarsal segment slightly longer than long

spur, and longer than the following three segments combined. The 4th abdominal sternum is

relatively shorter at middle and the pygidium

longer in the males.

HOLOTYPE.—In Museum National d'Histoire

Naturelle.

TYPE-LOCALITY.—Buenos Aires.

SPECIMENS EXAMINED.—969.

DATES COLLECTED.—January 29 to December 30.

DISTRIBUTION (Figure 22).—Alabama: Auburn,

Birmingham, Cheaha State Park, Crossville, Escambia County, Greenbriar, near Helena, Longdale

(Chambers County), Lawrence County, Lee County, Mobile, Monte Sano State Park, Pyziton (Clay

County), Russell, Storrsland, Trinity, Tuscaloosa.

Arizona: Tucson. Arkansas: Crawford County,

Hope, Johnson County, Magazine Mts. (Logan

County), Pike County, Washington County. California: Alhambra (Los Angeles County), Col ton,

San Diego County, San Bernardino, San Marino.

Florida: Avon Park, Black Warrior State Park,

Bradenton, Bratt (Escambia County), Chipley,

Dade City, Dunedin, Gainesville, Glen St. Mary,

Homestead, Key Largo, Knights (Hillsborough

County), Miami, Ocala, Oneco (Manatee County),
NUMBER 154 83

FIGURE 22.—Distribution of Ataenius platensis (Blanchard).

Parish,. Pensacola, Saint Andrews State Park, Santa

Rosa County, Sheffield, Silver Lake Recreational

Area (Leon County), Surf Panacea, Tallahassee,

Tall Timbers Research Station, Torreya State Park

(Liberty County), Trinity, Washington County,

Wewahitchka. Georgia: Arlington, Atlanta, Augusta, Barnesville, Baxley, Beachton, Berwick,

Brookhaven (De Kalb County), Dougherty County, Experiment, Fort Benning, Franklin D.

Roosevelt State Park (Chipley, Harris County),

Hazelhurst, Head River, Hinesville, Milledgeville,

Milner, Nashville, Peach County, Pine Mtn., Savannah, Stone Mtn., Tifton, Upson County, Ware

County (L. S. Walker State Park). Indiana: Marion

County. Louisiana: Alexandria, Avery Island,

Baton Rouge, Bossier Parish, Calcasieu Parish,

Gueydan, Lafayette, Leesville, New Orleans, Opalousas, Patterson, Raceland, St. Mary Parish, Sam

Houston State Park, Shreveport, Slidell (6 mi W, in

St. Tammany Parish). Mississippi: Brooklyn, Camp

Shelby, Greenwood, Grenada, Gulfport, Hinds

County, Horn Island, Keesler Field (Biloxi), Kosciusko, Lincoln County, Madison County, Starkville, State College, Washington County. North

Carolina: Anson County, Apex, Balsam, Camp Lejeune, Carthage, Duplin County, Raleigh, Richmond County, Robeson County, Southern Pines,

Sunburst, Swan Quarter. Oklahoma: Beaver Bend

State Park, McCurtain County, Norman, Oklahoma

City, Oklahoma County, Texhoma (near Willis).

South Carolina: Aiken, Allendale, Antreville, Bethune, Blaney, CCC Camp F2, Charleston, Chester

(4 m N), Clemson, Clinton, Columbia, Eutawville,

Florence, Georgetown County, Gramling, Haile

Gold Mine (Lancaster County), Hilton Head,

Hunting Island, Jefferson, Jocassee, Liberty Hill

(in tree hole, Kershaw County), Meredith, Myrtle

Beach, North Augusta, Okeegee River (Beaufort

County), Pelion, Pinnacle Mtn., Pontiac, Pritchardville, Ritter, St. Paul, Sandy Springs, Santuck,

Sassafras Mtn., Seabrooks Island, Summerville,

Swansea, Tigerville, Walhalla, White Pond, Yemassee, York (4 mi S). Tennessee: Benton County,

Burrville, Cades Cove (Great Smoky Mts.), Chil-
84 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

howee Mtn., Harrison Bay State Park (Hamilton

County), Knoxville, Nashville, Pulaski, Smyrna.

Texas: Anahuac, Anderson County, Bastrop State

Park, Bexar County, Big Bend National Park,

Brown County, Brownsville, Brownwood, College

Station, Columbus, Comfort, Corpus Christi, Dallas

County, Davis Mtns., Del Rio, Denison, Eagle

Pass, Edinburg, El Paso, Enchanted, Fort Davis,

Fredericksburg, Georgetown, Gillespie County,

Harlingen, Harrisburg, Hildalgo County, Houston, Junction (Kimble County), Kerrville, Laredo,

Linden, Lolita, Menard, New Braunfels, Richardson, Rio Grande City, Santa Rosa, Schulenberg,

Sinton, Starr County, Tennessee Colony (Anderson County), Tom Green County, Tyler, Uvalde,

Victoria, Weslaco, Western Cameron County,

Wharton, Winter Haven. Virginia: Ashgrove, Norfolk.

REMARKS.—Ataenius platensis is one of a group

of very similar-appearing species that includes A.

aequalis Harold, A. nugator Harold, A. integer

Harold, and A. heyrovski Balthasar (1960:5). Characters used in the key will separate the United

States species. Ataenius platensis has the middle

anterior disc of the pronotum and the basal area

of the head devoid of moderate and coarse punctunes and with only fine or minute punctures in

these areas. The species is commonly found under

partly dried or day-old cow dung and is attracted

to lights. The larva was described by Jerath (1960:

79).

56. Ataenius picinus Harold

Ataenius picinus Harold, 1867a:281 Schmidt. 1922:422.—

Cartwright, 1964:103.

Ataenius salutator Fall, 1930:99.—Cartwright, 1948:149; 1964:

103.

Ataenius darlingtoni Hinton, 1937b: 179.—Cartwright, 1945:

47; 1948:149; 1964:103.

DESCRIPTION.—Length 4.8 to 5.8 mm; width 2.0

to 2.5 mm. Oblong-elongate, moderately convex,

shining, black, sometimes with anterior margins

of pronotum and clypeus, and legs reddish. Clypeus with finely reflexed margin, broadly rounded

each side of moderately deep median emargination,

sides slightly arcuate to nearly right-angled genae;

surface finely, transversely wrinkled over anterior

two-thirds with moderately fine, close punctures

medially to frontal area where they merge with

a band of punctures twice their size, separated by

about their own diameters, fewer and not so close

at base of head. Pronotum convex, slightly narrower in front, about one-fourth wider than long,

sides and base strongly margined, edge crenate,

fimbriate, crenations noticeable at anterior angles,

the setae fine, long, conspicuous, generally separated by less than their lengths laterally, very

short basally; surface with mixed punctures

throughout, the very fine, evenly spaced punctures

separated by about twice their diameters, the

coarse punctures somewhat irregularly spaced but

numerous, gradually much finer and less numerous

over median anterior third of disc. Elytra onethird longer than wide, humeri not strongly dentate, striae deep, punctures strongly crenating

inner margins of the very moderately convex intervals, which show scattered, minute punctures more

or less in marginal rows, lateral intervals not different except for the 9th, which is densely, very finely

punctate. Mesosternum shagreened with fine, alutaceous sculpture and fine, short appressed hairs,

carinate between the coxae. Metasternum smooth

and shining but with moderately close, minute

punctures over disc and fewer outward to scabrous

area at extreme sides, midline long and deep, metasternal triangle smooth, deep, but sides not sharply

defined. Abdominal sterna strongly, closely punctate from side to side, fine at middle to coarse at

sides, first visible sternum with posterior marginal

line, the remaining four sterna fluted along anterior margin and the 2nd, 3rd, and 5th sternum

with a posterior marginal row of very close punctures forming a line along outer third. Pygidium

with strong, shining apical lip and roughly eroded

disc. Anterior femora with perimarginal groove,

surface shining but with very fine, irregularly

placed, minute punctures and five or six coarse,

crescent-shaped punctures at the knee. Middle and

hind femora similarly minutely punctate, with

one or two coarse, setigerous punctures at knee,

and a strong, posterior marginal line over outer

half of femur. Posterior apical fringe of hind tibia

invariably a group of four setae, a strong accessory

spine, and an intervening seta between the spine

and spurs. The first posterior tarsal segment, the

following three segments combined, and the long

spur all equal in length. Males have the 4th abdominal sternum about two-thirds as long as the

preceding sternum, the 5th relatively shorter, and
NUMBER 154 85

the pygidium longer with a wider apical lip than

is found in females.

LECTOTYPE.—In Museum National d'Histoire

Naturelle. Holotype of A. salutator Fall in Museum of Comparative Zoology.

TYPE-LOCALITY.—Chile, South America. Typelocality of A. salutator Fall, Pensacola, Florida.

SPECIMENS EXAMINED.—150 + .

DATES COLLECTED.—January 3 to September 27.

DISTRIBUTION (Figure 18).—Alabama: Anniston,

Auburn, Birmingham, Claiborne, Fairhope (Baldwin County), Gulf State Park, near Helena (Shelby

County), Lee County, Mobile, Storrsland. Arkansas: Drew County, (College Heights), Hope Experiment Station (Hempstead County), Magnolia (Columbia County), Taylor (3 mi W, in Lafayette

County). Florida: Bratt (Escambia County), Crestview (Okaloosa County), Gainesville, Marianna

(Jackson County), Molino (Escambia County),

Pensacola, Santa Rosa County, Walnut Hill (Escambia County), Westville (Holms County).

Georgia: Arlington, Beachton, Columbus, Dougherty County, L. S. Walker State Park (Ware County). Louisiana: Alexandria, Avery Island, Harahan,

Leesville, New Orleans, Pineville, Raceland, St.

Mary Parish, Sam Houton State Park, Shreveport.

Mississippi: Biloxi, Gulf port, Hinds County, Horn

Island, Jackson, Lincoln County, Long Beach,

Lucedale, Madison County, McComb, Moss Point,

Ocean Springs. South Carolina: Blackville, Charleston, Combahee River, Myrtle Beach, Pritchardville, Summerville, Yemassee. Texas: Beaumont,

College Station, Elkhart (10 mi SW, in Anderson

County), Houston, Jasper, Mother Neff State Park,

Orange, Vidor (Orange County).

REMARKS.—The combination of size, crenate, anterior lateral margin of the pronotum, densely,

finely punctate 9th elytral interval, and group of

four setae on apical margin of the posterior tibia

will identify this worldwide species (Figure Id).

It is known from southern United States, West

Indies, South America, Australia, New Zealand,

Fiji, New Caledonia, and New Hebrides.

57. Ataenius brevicollis (Wollaston)

Oxyomus brevicollis Wollaston, 1854:229.

Ataenius brevicollis. Harold, in Gemminger and Harold,

1869:1066.

Auperia sulcatula Chevrolat, 1864:413. [New synonymy.]

Ataenius sulcatula.—Harold, in Gemminger and Harold,

1869:1067.—Schmidt, 1922:459.

Ataenius sulcatulus.—Chapin, 1940:41 [not Chevrolat, 1864:

413].

Ataenius frankenbergeri Balthasar, 1938:56.—Cartwright,

1968:27. [New synonymy.]

DESCRIPTION.—Length 3.6 to 4.5 mm; width 1.6

to 1.9 mm. Piceous or black, shining, oblong, convex, sides of pronotum and elytra not visible from

directly above. Head convex; clypeus slightly angulate each side of moderate median anterior

emargination, sides arcuate to inconspicuous,

slightly more than right-angled genae, edge finely

reflexed, concave, smooth, very minutely punctate

back of emargination, surface elsewhere very finely

punctate with the punctures separated by about

twice their diameters, front with band of very

moderate punctures, generally separated by less

than their diameters, which are smaller anteriorly

and blend smoothly with upper clypeal punctures,

those of posterior edge about equal in size to those

of pronotum. Pronotum convex, about one-third

wider than long, base somewhat angularly arcuate,

anterior angles obtusely rounded, sides slightly

arcuate in front, shallowly emarginate before the

rounded posterior angles, sides and base strongly

margined, crenate-fimbriate, the setae short, separated by more than their length; surface moderately coarsely punctate throughout, slightly

smaller in front, punctures rather evenly distributed but more irregularly so and less close over

middle where they may be separated by one to four

diameters, usually by about their diameters over

lateral third. Elytra convex, slightly more than

twice as long as wide, humeri weakly dentate,

striae deep and strong, strial punctures deep, separated by about four times their diameters, crenating

inner side of slightly convex intervals, the intervals

minutely punctate, some scattered but mostly in

rows along margins; over the apical declivity the

striae become much wider, the intervals become

strongly carinate with margins eroded; laterally

the intervals become more convex and the rows of

punctures more distinct and noticeable, the 10th

interval alutaceous and nearly flat, the punctures

apically and laterally are minutely setigerous.

Mesosternum carinate between the coxae. Metasternum with strong, deep midline, disc with numerous mixed minute and very fine punctures,

increasingly roughly, closely punctate outward to
86 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

scabrous surface at sides, metasternal triangle finely

scabrous within. Abdominal sterna finely fluted

along anterior margin, deeper posteriorly, the fluting of the 5th sternum much deeper and at middle

half as long as the sternum, all sterna quite coarsely,

closely punctate, punctures generally separated by

their diameters, slightly closer and coarser at sides,

punctures of 5th sternum noticeably finer. Pygidium deeply, roughly eroded; apical lip convex,

shining, very finely, closely punctate. Male pygidium relatively longer than in female. Anterior

femora with deep perimarginal groove, surface

roughly punctate, finer in front, coarser, closer

and united in close diagonal lines posteriorly.

Middle femora with scattered, elongate, finely setigerous, moderate to coarse punctures separated

by one to three diameters, slightly larger outward

to knee, three strong setae at knee, posterior marginal line deep and complete. Posterior femora

with relatively few fine to moderate punctures, a

row of coarse punctures along anterior edge, three

or four coarse, setigerous punctures at the knee,

the posterior femoral line deep, inward one-third

or more from the knee and usually continued on

by disconnected elongate segments or punctures

toward coxae. Posterior tibial fringe of six setae,

accessory spine of same length and an intervening

seta between spine and spurs. First segment of

posterior tarsus longer than long spur, subequal

to following four segments combined.

HOLOTYPE.—In British Museum (Natural History).

TYPE-LOCALITY.—Madeira Islands.

SPECIMENS EXAMINED.—26.

DATES COLLECTED.—March 18 to June 7.

DISTRIBUTION (Figure 3).—Florida: Dade County,

Key Largo, New Smyrna. Mississippi: Gulfport.

Texas: Brazos.

REMARKS.—Ataenius brevicollis is quite similar

to A. rhyticephalus in apical and lateral characters

but is smaller and much more convex. It has been

collected in dung in the nests of the wood rat Neotoma floridana smalli Sherman on Key Largo,

Florida, by L. J. Bottimer and R. E. Woodruff.

Wollaston reported it as "Rather common around

Funchal in Medeira proper, occurring beneath

damp garden refuse and under putrid substances

near the beach."

I have examined the lectotype (present designation) of Ataenius sulcatulus (Chevrolat), which is

now in the Staatliches Museum fur Tierkunde,

Dresden. Dr. Rudolf Petrovitz of Vienna called

my attention to the synonomy of A. frankenbergeri

Balthasar with A. brevicollis Wollaston. I had examined the types of both at different times and

designated homotypes which prove the synonymy

is correct. The type-locality of A. sulcatulus was

Cuba, Ungebung von Havana. The type of A.

frankenbergeri was also from Havana, Cuba.

58. Ataenius rhyticephalus (Chevrolat)

Auperia rhyticephalus Chevrolat, 1864:413.

Ataenius rhyticephalus.—Harold in Gemminger and Harold,

1869:1067.

Ataenius floridanus Brown, 1930:3 Fall, 1930:97. [New synonymy.]

Ataenius strigicauda.—Cartwright, 1948:149 [not Bates, 1881:

96].

Ataenius solitarius Blatchley, 1928:69.—Cartwright, 1948:149.

[New synonymy.]

DESCRIPTION.—Length 4.3 to 5.6 mm; width 2.0

to 2.3 mm. Piceous or black, shining, oblong, subparallel, moderately convex. Head moderately convex, clypeus very broadly rounded each side of

moderate median emargination, sides arcuate to

sharp, right-angled genae, edge finely reflexed; surface transversely wrinkled upward from small

median, marginal concavity to middle of greatest

convexity, finely, closely punctate between wrinkles

and transverse band of close, coarse punctures of

frontal-occipital area, the coarse punctures generally separated by less than their diameters; a

sharp deep groove upward from genae around

curvature of eye. Pronotum convex, base arcuate,

one-fourth wider than long, anterior angles obtusely rounded, hind angles broadly rounded, sides

and base strongly margined, fimbriate-crenate, the

setae slightly longer anteriorly, separated by their

own lengths at posterior angles; surface with mixed

punctures, the disc with very fine and coarse punctures (separated by 2 to 4 diameters), laterally

over outer third much more closely set with coarse

and very fine to fine punctures, crowded and practically contiguous in anterior and posterior angles,

otherwise the coarse punctures separated up to

their diameters. Elytra about one-half longer than

wide, more than twice the length of the pronotum,

sides slightly crenate, humeri dentate; elytral striae

strong, strial punctures deep, quite close, crenating

inner margin of intervals on disc where the inter-
NUMBER 154 87

vals are flat to very weakly convex with scattered,

minute punctures; over apical declivity the striae

become much wider, the intervals strongly convex,

and the punctures larger and much more noticeable, laterally the intervals are more convex and

the outer three strongly, closely punctate, the

shoulders are very closely and quite coarsely punctate; posteriorly under high magnification the

coarser punctures are minutely setigerous. Mesosternum weakly carinate between the coxae. Metasternum with strong, deep midline slightly deeper

at ends, disc smooth with some very minute punctures and usually six to eight coarse punctures

at base of middle legs, roughly, closely punctate at

extreme sides, smooth otherwise, moderately deep

metasernal triangle with some minute sculpture

within. Abdominal sterna finely fluted along anterior margin, surface coarsely, closely punctate

throughout, only at middle finer and less close,

the first two completely visible sterna also have a

posterior marginal row of very close punctures;

the anterior flutings of the 5th sternum are much

deeper and up to half the length of the sternum

at middle. Pygidium deeply eroded, rough, with

moderately wide, minutely punctate, convex apical

lip. Anterior femora with deep perimarginal groove,

trochanter and adjacent femoral surface smooth

and shining, remaining flattened surface rough

with moderately coarse punctures tending to form

diagonal lines. Middle and hind femora inwardly

smooth, minutely punctate, outwardly especially

along anterior margin near the knee with scattered,

coarse punctures, posterior marginal lines deep,

usually complete on middle femur and about threefourths total length from the knee on hind femur.

Posterior tibia with strong accessory spine, fringe

of setae in a group of four but, although the accessory spine is remote from the spurs, I find only

a very short intervening seta, not half the length

of the group of four. First tarsal segment of hind

legs longer than the long spur and almost as long

as the following four segments combined. Abdomen

slightly flatter and the pygidium relatively longer

in the male.

HOLOTYPE.—In Staatliches Museum fur Tierkunde, Dresden.

TYPE-LOCALITY.—Cuba.

SPECIMENS EXAMINED.—50.

DATES COLLECTED.—February 21 to September

15.

DISTRIBUTION (Figure 16).—Florida: Big Pine

Key, Collier-Seminole State Park, Dunedin, Enterprise, Everglades National Park, Gainesville, Highlands Hammock, Key West, Levy County, Marion,

Monticello, Myakka State Park, Paradise Key,

Royal Palm Park, Tall Timbers Research Station,

Tampa, Timms Hammock, West Palm Beach.

South Carolina: Charleston, Gardens Corner, Runnymede, Yemassee. Texas: "Texas."

REMARKS.—Ataenius rhyticephalus is closely related to A. heinekeni Wollaston (1854:228) and

A. strigicauda Bates (1887:96). In fact, I once synonymized A. rhyticephalus (floridanus) with A.

strigicauda but I now believe they are quite distinct. In A. strigicauda from Mexico, the basal

frontal punctures gradually become slightly smaller

down over the clypeus as opposed to a distinct

band in A. rhyticephalus, the base of the pronotum

is distinctly emarginate opposite the humerus, the

crenations of the elytral intervals are coarser and

more noticeable, and over the apical declivity the

intervals are noticeably margined or eroded along

each side. In A. heinekeni, from Madeira Islands,

the pronotal angles are shallowly, densely punctate, many of the punctures running together, the

base of the pronotum is slightly emarginate at the

posterior angles, the lateral elytral intervals are less

coarsely and conspicuously punctate, the crenations

of the elytral intervals are finer and less noticeable,

and the upper surface of the pronotum and elytra

is minutely but distinctly alutaceous. I have examined the types of all three species.

Although I have seen A. rhyticephalus only from

South Carolina, Florida, and Texas, I suspect it

occurs in all the intervening states as well. I have

not seen it in light-trap material. My own collections were made under leaves on hard ground

under live-oak trees on old rice-field dams, in

church yards, and under roadside debris. Some

Florida specimens were taken in forest litter. Jerath

(1960:75) described the larva under the name

Ataenius strigicauda Bates.

59. Ataenius brevis Fall

Ataenius brevis Fall, 1930:98.—Cartwright, 1948:150.

DESCRIPTION.—Length 3.4 to 5.1 mm; width 1.6

to 2.3 mm. Black, shining, moderately convex,

short, oblong-oval, legs dark rufous. Head mod-
88 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

erately convex; clypeal margin very finely reflexed,

broadly rounded each side of wide, shallow median

emargination, sides arcuate to sharply rounded,

right-angled genae; surface very finely, evenly punctate, punctures separated by two diameters, sometimes weakly but perceptibly transversely wrinkled

anteriorly below median convexity; occipital area

with crossband of moderately coarse punctures

slightly closer toward sides. Pronotum about onefourth wider than long, sides parallel; anterior

angles obtuse, hind angles broadly rounded, sides

and base margined, minutely to very finely crenate, more noticeably so around posterior angles

where the short marginal setae are separated

usually by more than their own lengths; surface

with mixed very fine and numerous irregularly

placed, moderately coarse punctures, usually closer

toward sides. Elytra short and convex, about onehalf longer than wide, sides arcuate, humeri

strongly dentate; striae strong, crenately punctate;

intervals weakly convex, smooth and shining but

with scattered, minute punctures, 10th interval flat

or less convex than 9th interval. Mesosternum carinate between coxae. Metasternum shining, middle

line strong and deep, slightly shorter than length of

first two abdominal segments combined, discal area

of male with very fine punctures anteriorly, moderate punctures over posterior half, generally separated by their diameters or less, similar punctures

outward to scabrous area at sides, female lacking

the larger punctures, metasternal triangle moderate, not sharply defined. Abdominal sterna

shining, punctate throughout, fine medially to

moderately coarse at sides where they are separated

by one or two times their diameters; finely fluted

along anterior margins, the fluting increasingly

longer on each sternum posteriorly; pygidial

eroded area longer in males. Anterior femora with

perimarginal groove; surface narrowly smooth

along anterior margin, elsewhere roughly, closely

punctate with mixed fine and moderate punctures.

Middle and hind femora shining, with very fine,

scattered punctures separated by three or four

times their diameters; posterior marginal line

strong, extending about half the distance from the

knee to the trochanter. Hind tibia with strong

accessory spine with intervening seta between

spine and spurs and a fringe group of five setae,

rarely four or six; spurs fine and slender, the long

spur much shorter than first segment of tarsus

which is also much longer than the following three

segments combined.

HOLOTYPE.—Fall Collection, Museum of Comparative Zoology, No. 24767.

TYPE-LOCALITY.—"Pennsylvania." Dr. Fall states

that the two cotypes were collected by Henry

Ulke—probably in the Blue Ridge Mountains

where Ulke had a summer home or camp at Pen

Mar, Pennsylvania.

SPECIMENS EXAMINED.—160+.

DATES COLLECTED.—April 18 to September 8.

DISTRIBUTION (Figure 18).—Alabama: Franklin

County (The Dismals). District of Columbia.

Georgia: Billys Island (Okefenokee Swamp), Pine

Mtn., Satolah. Maryland: Cove Point, S. I. Java

Farm (Anne Arundel County). Massachusetts: Chicopee, Sherborn. New Hampshire: "New Hampshire," Three Mile Island. New Jersey: Fort Lee.

New York: New York City, Peekskill. North Carolina: Black Mountains, Buck Forest, Highlands,

Pisgah Forest. Pennsylvania: Frazer, Pen Mar, Pocono Mts. Rhode Island: North Kingston (Boston

Neck). South Carolina: CCC Camp F2 (Oconee

County), Clemson, Earl's Ford (Oconee County),

Fish Hatchery (Oconee County), Mountain Rest,

Pinnacle Mtn., River Falls, Sassafras Mtn. (Pickens

County). Tennessee: Burrville, Citico, Venore (11

mi W). Virginia: Falls Church.

REMARKS.—The habitus of this species is quite

distinct and quickly separates it from others of

the strigatus group to which it belongs. The short,

oval elytra with normal, almost quadrate pronotum give a quite distinctive appearance. From

A. strigatus it may be separated also by the flat

or weakly convex 10th elytral interval, by the posterior femoral line being one-half or less the distance from knee to trochanter, and the transverse

wrinkles of the clypeus lacking, very weak, or the

median convexity simply punctate. Small specimens of A. fattigi are sometimes difficult to separate, but in A. brevis the elytral strial punctures

are usually fine and more widely spaced, the eroded

posterior marginal line of the first visible abdominal sternum angles forward at middle leaving a

smooth, more or less triangular area at the edge,

and the anterior prosternal lobe has the center

convex; in A. fattigi the strial punctures are more

closely spaced, the eroded marginal line of the

first visible abdominal sternum may angle forward

at middle but its posterior edge remains straight
NUMBER 154 89

along the edge of the sternum, and the anterior

prosternal lobe has the center concave.

Jerath (1960:76) described the larva of A. brevis.

60. Ataenius spretulus (Haldeman)

Aphodius spretulus Haldeman, 1848:106.

Ataenius spretulus.—Harold [as a synonym of strigatus Say],

in Gemminger and Harold, 1869:1067 Horn, 1887:109.

Ataenius consors Fall, 1930:104 [not Blackburn, 1904:161].—

Cartwright, 1943:108.

Ataenius falli Hinton, 1934:119—Cartwright, 1943:108.

Ataenius spretulus Cartwright, 1943:108; 1948:150.

DESCRIPTION.—Length 3.6 to 5.5 mm; width 1.7

to 2.4 mm. Elongate-oblong, moderately convex,

shining black, legs and clypeal margin reddish.

Head convex, finely reflexed edge of clypeus broadly

rounded each side of wide, shallow median emargination, sides nearly straight to sharply rounded,

right-angled genae; surface feebly, transversely

wrinkled anteriorly, finely, closely punctate above

middle, the punctures separated by twice their

diameters or less, front with transverse band of

moderate punctures, unevenly distributed but generally separated by about their diameters, more or

less. Pronotum about three-fourths as long as wide,

convex, anterior angles obtusely rounded, posterior

angles rather broadly rounded, sides and base

strongly margined, sides fimbriate-crenate at anterior and posterior angles, the crenations barely

visible, the setae short and inconspicuous, separated

by a little more than their lengths, middle third

or more of margin without setae; surface with

evenly spaced, minute to fine punctures throughout

and very irregularly placed, scattered, coarse punctures intermixed, usually relatively few, sometimes

in scattered groups. Elytra approximately one-third

longer than wide, humeri finely dentate, sides very

weakly arcuate, striae fine, moderately convex intervals, surface smooth, shining, but with scattered,

extremely minute punctures, lateral intervals not

different. Mesosternum shagreened as usual, with

very fine surface sculpture and short, fine, decumbent hair, carinate between the coxae. Metasternum with long, strong, deep midline, smooth

and shining but with very fine, scattered punctures,

some shallow, rough sculpture at extreme sides,

metasternal triangle strong, faintly roughened

within. First visible abdominal sternum with fine

posterior marginal line, the remaining four sterna

finely fluted along anterior margin, fluting of 5th

sternum a little longer but not greatly longer at

middle, possibly twice as long at middle as at

sides; elsewhere the surface punctate from side to

side, finely so at middle, gradually coarser to sides

where they are moderately coarse and separated by

their diameters or less, 5th sternum with only very

fine punctures and a single, very large, deep,

elongate puncture or pore at extreme sides. Pygidium with shining, convex apical lip and disc finely,

roughly eroded. Anterior femora with strong perimarignal groove, surface smooth and shining, with

scattered, minute punctures, occasionally a few

very shallow, indistinct moderate punctures posteriorly. Middle and hind femora smooth, shining,

with scattered, very fine punctures, strong posterior

marginal line along outer half. Apical fringe of

posterior tibia usually a group of five setae, a

strong accessory spine of equal length, and an intervening seta between the spine and spurs. First

segment of hind tarsus longer than long spur, and

longer than following three tarsal segments combined. Males have a patch of close, moderate,

setigerous punctures at middle each side of metasternal midline, the 4th abdominal sternum is

shorter at middle and the pygidium longer with

much wider apical lip than in the female.

HOLOTYPE—Museum of Comparative Zoology,

No. 8358.

TYPE-LOCALITY.—"Middle States," i.e., middle

Atlantic states.

SPECIMENS EXAMINED.—1252 + .

DATES COLLECTED.—February 17 to November 11.

DISTRIBUTION (Figure 15).—Alabama: Anniston,

Auburn, Birmingham, Florence, Huntsville, Mobile, Pyziton (Clay County). Arkansas: Arkansas

County, Beaver Lake (Madison County), Cave

Creek Valley (Washington County), Devils Den

State Park, Drew County, Fayetteville, Hope, Hot

Springs National Park, Little Rock, Magnolia

(Columbia County), Pike County, Randolph

County, Taylor, Washington County. California:

Big Basin State Park (Santa Cruz County). Colorado: "Colorado," Pueblo. Connecticut: Hamden,

Meriden, New Haven. Delaware: Bethany Beach,

Bridgeville, Delaware Beach, Dover, Farmington

(Kent County), Georgetown, Lewes, Milton, Newark, Rehoboth Beach, Smyrna, Sussex County,

Wilmington. District of Columbia: Washington.

Florida: Archbold Biological Station, Belle Glade,
90 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Biscayne, Bradenton, Capron, Chicopee, Clewiston, Colliersville, Coral Gables, Daytona, Dunedin,

Enterprise (Volusia County), Flamingo, Florida

City, Fort Lauderdale, Fort Myers, Gainesville,

Goulds, Haw Creek, Highlands Hammock State

Park, Holly Hill, Homestead, Immokalee, Jacksonville, Key West, Kissimmee, Lake Letta (Avon

Park), Lake Marion, Long Pine Key, Marion

County, Mayport, Merritt Island, Miami, Miami

Beach, Miami Springs, Monkey Jungle, Moore

Haven, Myakka River State Park, Ochopee

(Collier County), Okeechobee, Oneco (Manatee

County), Orange County, Palms Vista Hammock

(Everglades National Park), Paradise Key, Parrish,

Perrine, Punta Gorda, Royal Palm Park, Sanford,

Sarasota, Stock Island, Tallahassee, Tampa, Venus

(Highland County), Vero Beach, West Palm Beach,

Zolfo Springs. Georgia: Atlanta, Bald Mtn., Brookhaven (De Kalb County), Clarkston, Demorest,

Franklin D. Roosevelt State Park, Nashville, Pine

Mtn., Rossville, Stone Mtn., Valdosta. Idaho: Kellogg. Illinois: Argonne National Laboratory (Du

Page County), Beverly Hill, Carbondale, Caterville

(Williamson County), Crab Orchard (Williamson

County), Evanston, Highland Park, Murphrysboro

(Jackson County), Olympia Field, Quincy, Union

County, Zeigler. Indiana: Athens, Dunes Park

Beach, Forestville, Grantsburg, Hovey Lake, Indianapolis, Lafayette, Lawrence County, Richmond, Wolf Lake. Iowa: Ames, Bedford, Cedar

County, Council Bluffs, Davis County, Eddyville,

Guttenburg, Indianola, Iowa City, Manwell, Okeeboji, Redfield, Shenandoah, Silver Lake. Kansas:

Chetopa, Coffee County, Douglas County, Gardner

Lake (Johnson County), Kansas City, Lawrence,

Manhattan (5 mi N), Osage, Pittsburg, Pottawatamie County, Reno County, Riley County,

Seneca, Topeka, Wellington, Wilson County. Kentucky: Barbourville, Bowling Green, Cadiz (Trigg

County), Fairdale, Jefferson County, Louisville,

Newport, Old Hanco, St. Matthews, Wolf Creek

Lake (Wayne County). Louisiana: Alexandria,

Avery Island, Baton Rouge, Calcasieu Parish, Harahan, Jamesville, Kenner, Loanoke, Morgan City,

New Orleans, Olivier, Opelousas, Pearl River,

Pineville, Raceland, Shreveport, Vinton (14 mi E).

Maryland: Baltimore, Beltsville, Boonsboro, College Park, disfield, Edgewood, Forest Glen, Glen

Burnie, Grecnbelt, Hagerstown, Hancock, Hebbville, Hyattsville, Pocomoke Swamp, Point Lookout, Reisterstown, Salisbury, Scotland (St. Marys

County), Shelton, Takoma Park, Thurmont, Upper

Marlboro. Massachusetts: Amherst, Boston, Brookline, Fall River, Framingham, Groton, Newton,

Ramsey, Waban, Waltham. Michigan: Agricultural

College, Bay County, Bellevue, Chelsea (Washtenaw County), Detroit, East Lansing, Flint, Midland County, Selbridge Field, Wayne County,

Whitmore Lake. Minnesota: Big Stone County,

Buffalo, Duluth, Fairbault, St. Paul. Mississippi:

Grenada, Gulfport, Horn Island, Indianola, Itta

Bena, Keesler Field-Biloxi, LeFlore County, Leland, Long Beach, Meridian, Moss Point, Pearl

(Jackson), Rankin County, Raymond (Hinds

County), Scott (Bolivar County), Starkville, State

College. Missouri: Bagwell, Centerville, Charleston, Clarksville, Clayton, Cole County, Columbia,

Dardene Prairie, Everton, Hayti, Ironton, Jefferson City, Louisiana, Newberg, Pacific, St. Joseph,

St. Louis, Scott County, Springfield, Stanton, Vernon County, Webster Groves, W. Quincy, Williamsville. Nebraska: Bennett, Fairmont, Halsey,

Holt County, Lincoln, McCook, South Bend, West

Point. New Hampshire: "New Hampshire." New

Jersey: Anglesea, Atlantic City, Avalon, Avenel,

Bamber Lake, Blenheim, Boonton, Cape May,

Chelsea, Clementon, Hadden Heights, Hoboken,

New Brunswick, New Lisbon, Sea Island, Wildwood, Woodbury, Wrightstown. New Mexico:

"New Mexico." New York: Brooklyn, Ithaca, Jericho, New York City, Peekskill, Putnam Valley,

Roslyn (Long Island), West Point. North Carolina:

Apex, Greensboro, Judaculla Rock, Pisgah Forest,

Raleigh, Robeson County, Swan Quarter, Tryon.

North Dakota: Cass County, Ransom County,

Richland County. Ohio: Ada, Athens, Champaign

County, Cleveland, Conneaut, Erie County, Franklin County, Holgate, Hudson, Ottawa County,

Painesville, Washington County, West Alexandria.

Oklahoma: El Reno, Miami, Norman, Oklahoma

City, Ponca City, Texhoma (near Willis), Tulsa,

Union City. Pennsylvania: Bucks County, Castle

Rock (Delaware County), Conshohocken, Davidsburg, Downington, Easton, Eddystone, Evansburg,

German town, Harrisburg, Lansdowne, Lima,

Mount Airy, Norwood, Oaklane, Philadelphia,

Pittsburgh, State College, Wilkes Barre, Wormleysburg, York, Zelionople. Rhode Island: Newport.

South Carolina: Charleston, Chester, Clemson, Columbia, Florence, Monks Corner, Myrtle Beach,
NUMBER 154 91

Tigerville. South Dakota: Brookings, Highmore,

Lake Sinai, Paulson (Lincoln County), Yankton.

Tennessee: Burrville, Cookeville, Friendsville,

Greeneville, Jackson, Johnson City, Knoxville,

Madison, Memphis, Morrison, Nashville, Oak

Ridge, Pulaski, Reelfoot Lake, Sevierville. Texas:

Anderson County, Beaumont, Brazos, Brownsville,

College Station, Dallas, Devils River, Edinburg,

Galveston, Houston, Kerrville, La Marque (Galveston County), Orange County, Piano, Reeves County, Victoria, Whitesboro, Willis. Utah: Ogden, Salt

Lake County, Spanish Fork, Utah County, Weber

County. Virginia: Arlington, Basye, Belvoir, Blacksburg, Camp Pickett, Charlottesville, Chatham,

Dumfries, Falls Church, Fort Monroe, Franklin,

Hampton, Herndon, Middleburg, Mountain Lake,

Mount Vernon, Montgomery County, Nelson

County, Norfolk, Paris, Roaches Run, Roanoke,

Salem, Shenandoah County, Virginia Beach. West

Virginia: Kanawha, Kearneysville, Wardensville.

Wisconsin: Madison, Milwaukee County, Nekoosa,

Wood County. Wyoming: Platte County. Canada:

Ontario: Ancaster, Forestville, Hamilton County,

Leamington, Ottawa, Point Pelee, Simcoe, Walsingham, Wentworth, Wheatley.

REMARKS.—The type, bearing a small pink circle indicating "Middle States," was placed in the

LeConte series of A. strigatus Say, which it resembles very closely. Ataenius strigatus differs in having coarsely, roughly punctate anterior femora and

dense, coarse pronotal punctures at sides. Both

species were frequently identified as A. cognatus

LeConte in earlier publications.

Ataenius spretulus has been collected in all but

seven states in continental United States.

61. Ataenius wenzelii Horn

Ataenius wenzelii Horn, 1887:77 Robinson, 1947:150.—

Cartwright, 1948:150.

Ataenius ludovicianus Fall, 1930:100.—Cartwright, 1948:150.

DESCRIPTION.—Length 4.2 to 5.5 mm; width 1.9

to 2.3 mm. Elongate-oblong, moderately convex,

dull to moderately shining, black, edge of clypeus

and legs reddish. Head convex, margin of clypeus

finely reflexed, broadly, evenly rounded each side

of shallow to moderate median emargination, sides

usually slightly arcuate to right-angled genae; surface anteriorly transversely weakly wrinkled,

median convexity and above finely punctate, the

punctures separated by their diameters generally,

front with transverse band of close, moderate punctures with a few scattered, fine punctures intermixed. Pronotum approximately two-thirds as long

as wide, anterior angles obtuse, sides very broadly,

evenly rounded into base, sides and base arcuate,

strongly margined, the edges fimbriate-crenate, the

crenations scarcely visible, the setae moderately

short, not very conspicuous, separated generally by

about their lengths; surface densely punctate with

mixed fine and moderately coarse punctures, the

coarse punctures a little closer toward anterior and

posterior angles. Elytra three-fourths as wide as

long, humeri sharply dentate, sides weakly arcuate,

striae fine, moderately deep, strial punctures

slightly crenating the flat to very weakly convex,

usually strongly alutaceous intervals, apical declivity and lateral intervals more noticeably convex,

surface of intervals with scattered, minute punctures more or less in lateral rows also. Mesosternum

shagreened as usual, carinate between the coxae.

Metasternum smooth, shining, midline strong, disc

anteriorly minutely punctate to finely punctate

posteriorly in the male (only slight difference in

female), smooth outward to the small scabrous

area at extreme sides, metasternal triangle usually

smooth and shining. First visible abdominal sternum with fine posterior marginal line, remaining

four sterna with progressively longer fluting along

anterior margin, a little longer at sides on middle

sterna, longer at middle on 5th sternum, sterna

punctate from side to side, punctures very fine at

middle to very moderate and closer at sides. Pygidium longer in male, apical lip convex, shining,

minutely punctate, disc eroded, very finely scabrous.

Anterior femora with perimarginal groove, surface

shining, some scattered, minute to fine punctures,

anterior spur of male strongly bent inward apically.

Middle and hind femora smooth, shining, with

scattered, very minute punctures and two or three

coarse, finely setigerous punctures at knee; fine posterior marginal line along outer half best seen from

behind. Posterior tibial apical fringe of five, sometimes six, setae, a short, triangular accessory spine

and an intervening seta between spine and spurs.

The relative length of the long spur, first tarsal

segment, and following three segments of the posterior tarsus combined slightly variable but generally about equal in length.
92

HOLOTYPE.—Academy of Natural Sciences of

Philadelphia, No. 3610.

TYPE-LOCALITY.—Atlantic City, New Jersey.

SPECIMENS EXAMINED.—100+.

DATES COLLECTED.—March 2 to October 23.

DISTRIBUTION (Figure 23).—Alabama: Mobile.

Arkansas: Hope. Florida: Wewahjtchka. Iowa: Guttenberg. Louisiana: Alexandria, Gueydan, New

Orleans. Maryland: Cambridge (10 mi S), Plum

Point. Mississippi: Gulf port, Horn Island, Ocean

City. New Jersey: Anglesea, Atlantic City, Beesleys

Point, Brigantine, Sea Island City. North Carolina:

Swan Quarter. Oklahoma: Willis. Pennsylvania:

Pocono Lake. South Carolina: Charleston. Texas:

Anderson County, Brazos, Brownsville, Corpus

Christi, Houston, La Marque (Galveston County),

Whitesboro. Virginia: Norfolk, Virginia Beach.

REMARKS.—Horn's original description was in

error on at least three important characters. Ataenius wenzelii does have an intercoxal carina, the

tibiae have an accessory spine, and the posterior

femoral line, though weak, is visible from behind,

extending over the outer half to one-third of the

distance to the knee. The single specimen mounted

ventral side up in the Horn series apparently lacks

the intercoxal carina; however, this specimen is

exceptional as others in the series have a distinct

carina.

Ataenius wenzelii can usually be identified by

the flat, alutaceous elytral intervals.

62. Ataenius cognatus (LeConte)

Euparia cognata LeConte, 1858:65.

Ataenius cognatus.—Harold, in Gemminger and Harold, 1869:

1066 Horn, 1887:83.—Schmidt, 1922:424.—Fall, 1930:

106—Cartwright, 1948:150.

DESCRIPTION.—Length 4.0 to 5.9 mm; width 1.9

to 2.5 mm. Black, shining, elongate-oblong, legs

slightly reddish. Head weakly convex; clypeus

broadly rounded each side of moderate median

emargination, sides slightly arcuate to right-angled

genae, margin finely reflexed; surface lightly transversely wrinkled anteriorly, finely punctate between wrinkles and basal band of moderately

coarse punctures, the fine punctures separated by

one to two times their diameters, the coarse punctures by their diameter or less in the band but

much more separated in occipital area. Pronotum

about one-half wider than long, moderately conSMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

vex, sides nearly straight, sides and base margined,

edge not perceptively crenate, marginal setae very

moderate in length, generally separated by their

own lengths; anterior angles obtusely rounded,

posterior angles broadly rounded, surface with

mixed coarse and very fine punctures throughout,

scattered in some specimens, evenly distributed in

others, separated by less than one to several times

their diameters, the punctures a trifle smaller along

anterior margin, a little closer in anterior angles.

Elytra one-third longer than wide, humeri dentate,

sides nearly parallel, striae deep, crenate-punctate,

the crenations much deeper on inner margin of

interval; intervals weakly convex, lateral intervals

not different, surface with scattered, barely visible,

minute punctures and a line of the same along

outside margin where they are separated by four

or five times their diameters. Mesosternum finely

carinate between the coxae. Disc of metasternum

slightly depressed medially, the midline deep and

strong, a few scattered, very fine punctures anteriorly and outward to sides, male with a patch

of moderate, setigerous punctures just back of

middle, a few fine to moderate punctures at extreme sides, metasternal triangle deep but not

sharply defined, minutely alutaceous within; abdominal sterna with fine punctures at middle to

moderate punctures at sides, anterior margins

fluted as usual. Eroded area of pygidium deep with

strong, convex apical margin. Anterior femora

with perimarginal groove, smooth and shining,

with scattered minute punctures. Middle and hind

femora similar but without posterior marginal line.

Anterior tibial spur of male not incurved at tip.

Posterior tibia and tarsus equal in length; tibial

fringe a group of five close setae, short accessory

spine, and an intervening seta between accessory

spine and the fine, slender spurs. First tarsal segment longer than long spur and longer than the

following three segments combined.

LECTOTYPE (present designation).—LeConte Collection, Museum of Comparative Zoology, No.

3732.

TYPE-LOCALITY.—"Texas." The original description listed "Texas and Sonora." The lectotype

bears a red disc indicating Texas.

SPECIMENS EXAMINED.—720+.

DATES COLLECTED.—February 16 to November 22.

DISTRIBUTION (Figure 14).—Arizona: Chiricahua

Mts., Huachuca Mts., Paradise, Portal, Yuma. Cali-
NUMBER 154 93

FIGURE 23 Distribution of Ataenius wenzelii Horn and A. rudellus Fall.

• wenzelii * rudellus

fornia: Blythe, Brawley, Calexico (15 mi E), Palo

Verde, Ripley. Kansas: Manhattan, Wellington.

Louisiana: Calcasieu Parish. New Mexico: Artesia,

Cienega Lake, Delhart, Deming, Las Cruces, Mesilla, Rodeo (18 mi N), Roswell, Socorro, State

College. Oklahoma: Lawton. Texas: Amarillo,

Austin, Bentsen State Park, Big Bend National

Park, Big Springs, Boca Chica, Brazoria County,

Brownsville, Brownwood, Cameron County, Corpus Christi, Cotilla, Cypress Mills, Dallas, Del Rio,

Eagle Pass, Edna, El Paso, Gurley, Harlingen,

Hidalgo County, Horkley, Houston, Kerrville,

Kingville, Laredo, Lolita, McAllen, Menard, Mission, Mountain Home, Nueces River (Zavella

County), Pecos, Rio Grande City, San Antonio,

San Diego, Santa Ava Wildlife Refuge (near

Alamo), Sharpsburg, Starr County, Uvalde, Val

Verde County, Victoria, Weslaco, Winter Haven.

REMARKS.—Specimens from northern and eastern localities previously considered to be Ataenius

cognatus are usually A. spretulus or A. strigatus.

The lack of posterior femoral line and locality

data will quickly distinguish A. cognatus. The

male has a patch of moderate, setigerous punctures posteriorly on disc of metasternum, lacking

in the female, and the male pygidium is relatively

longer than that of the female.

Biological notes on this species by Hoffman

(1935) almost certainly refer to A. spretulus or A.

strigatus.

63. Ataenius rudellus Fall

Ataenius rudellus Fall, 1930:103.—Cartwright, 1948:150.

DESCRIPTION.—Length 3.9 to 4.5 mm; width 1.7

to 1.9 mm. Elongate, parallel, shining, black with

dark reddish legs, only moderately convex. Head

quite strongly convex, clypeal edge very finely reflexed, broadly rounded each side of shallow

median emargination, sides feebly transversely

wrinkled anteriorly, very finely, closely punctate
94 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

over greatest convexity to base, frontal-occipital

area with transverse band of close, moderate punctures at least twice the size of the clypeal punctures, separated by less than their diameters, the

band of fine clypeal punctures at least as wide as

the band of much coarser punctures of the front.

Pronotum about two-thirds as long as wide, sides

and base strongly margined, crenate at anterior

angles, fimbriate all around, the setae moderate

in length anteriorly to short basally, separated by

about their own lengths; surface everywhere with

mixed very fine and moderate punctures, the latter

irregularly spaced, closest halfway to sides where

they may be practically contiguous, to a few areas

on disc where they may be separated by five or

six times their diameters, the very fine punctures

are evenly distributed. Elytra two-thirds as wide

as long, sides nearly straight, humeri very moderately dentate, striae fine, moderately deep, strial

punctures deeply crenating inner margin and very

slightly the outer margin of the adjacent intervals;

intervals slightly convex, surface minutely alutaceous, and with scattered minute punctures usually

separated by three or four times their diameters;

lateral intervals not different. Mesosternum shagreened with fine alutaceous sculpture and fine,

short, close, decumbent hair; weakly carinate between the coxae. Metasternum shining, smooth,

disc with minute punctures separated by four or

more diameters anteriorly, closer posteriorly, a

little scabrous at extreme sides, midline long and

deep, metasternal triangle moderate, not sharply

defined, shining. First visible abdominal sternum

with posterior marginal line, remaining four sterna

finely fluted along anterior margin, the fluting

noticeably longer at sides of sterna 2 and 3 and

middle of 5th sternum, surface punctate from side

to side, very finely at middle to very moderately

at sides. Pygidium with shiny apical lip, disc

deeply, roughly eroded. Anterior femora with perimarginal groove, surface smooth, shining, not

closely minutely punctate, occasionally with two

or three moderate punctures also. Middle and hind

femora smooth, shining, very minutely punctate,

posterior marginal line (best seen from rear) extending inward from the knee a little less than

half the length of the femur. Apical tibial fringe

of hind tibia .with five setae, a short accessory spine

about half the length of the setae, and an intervening seta between the spine and spurs. First

tarsal segment of hind leg and long spur equal

in length, slightly longer than next three segments

combined. Males are recognized by the apically

hooked spur of the anterior tibia, the 4th abdominal sternum shortened at middle to half that of

the preceding sternum, and by the pygidium being

relatively longer than in the female.

HOLOTYPE.—Male, in Fall collection at Museum

of Comparative Zoology, No. 24771.

TYPE-LOCALITY.—St. Petersburg, Florida.

SPECIMENS EXAMINED.—58.

DATES COLLECTED.—April 15 to November 14.

DISTRIBUTION (Figure 23).—Florida: Cleveland,

Dade County, Daytona, Everglades National Park,

Jacksonville, Key West, Punta Gorda, St. Petersburg, Stock Island (Monroe County), Tampa.

REMARKS.—Ataenius rudellus is very close to A.

wenzelii but is smaller, narrower, always has red

legs, the intervals are slightly convex and not

alutaceous or very minutely so.

64. Ataenius californicus Horn

Ataenius californicus Horn, 1887:84.—Fall, 1930:107.—Cartwright, 1948:151.

DESCRIPTION.—Length 3.7 to 5.2 mm; width 1.6

to 2.1 mm. Piceous, shining, legs rufous, elongateoblong, parallel, moderately convex. Head moderately convex; clypeus broadly rounded each side

of wide, moderately deep anterior emargination,

sides nearly straight to slightly more than rightangled genae, edge finely reflexed; surface transversely wrinkled anteriorly, very finely punctate

above median convexity, basal band of close, moderate punctures separated by their diameters or

less. Pronotum about one-third wider than long,

sides arcuate, sides and base strongly margined,

crenations more noticeable around widely rounded

posterior angles, marginal setae moderately long,

more widely separated anteriorly, shorter and

closer across the base where they are separated

by about their own lengths; surface with scattered,

mixed, very fine and very coarse punctures throughout, the coarse punctures may be separated by

one-half to four or more times their diameters,

their diameters about the width of the marginal

groove, those along anterior margin becoming a

little smaller. Elytra convex, one-third longer than

wide, sides nearly parallel, humeri only moderately

dentate; striae deep, crenate-punctate, punctures
NUMBER 154

separated by four times the width of striae, crenations about one-fifth width of interval and only

on inner side; intervals very moderately convex,

slightly more strongly convex over apical declivity

where the striae become wider, strongly shining

but with minute, scattered punctures, lateral intervals not different from others. Mesosternum carinate between coxae. Metasternum smooth and

shining, midline strong and deep, discal area finely

punctate with the posterior punctures very slightly

larger and closer, here separated by their diameters, a

few scattered, barely perceptible, minute punctures

outward to sides and in the not sharply defined,

depressed triangle, a little scabriculate sculpture at

extreme sides. Abdominal sterna with widely scattered, very fine punctures at middle, outer third

with increasingly close, coarse punctures to sides

where they are separated by their diameters or

less, anterior margins fluted, the fluting gradually

wider on each sternum to the 5th sternum where

they are nearly half as long as the sternum. Pygidial median eroded area scabrous over alutaceous

surface. Anterior femora with perimarginal groove;

surface shining, smooth, with a few scattered, fine

to very moderate punctures. Middle and hind

femora smooth, shining, with scattered fine punctures separated by four or five times their diameters, posterior femoral line fine one-fourth to

one-third distance from knee to trochanter and

usually best seen from rear. Posterior tibial fringe

a group of five setae, a short accessory spine, an

intervening seta, and very slender spurs. Long

spur, first tarsal segment, and following three segments combined subequal in length. Hind tarsus

subequal to tibia, middle tarsus slightly longer

than its tibia. Males have the spur of the anterior

tibia hooked inward, the 5th abdominal sternum

shortened medially and the pygidium longer dorsoventrally.

HOLOTYPE.—Academy of Natural Sciences of

Philadelphia, No. 3613.

TYPE-LOCALITY.—San Bernardino, California.

SPECIMENS EXAMINED.—160+ .

DATES COLLECTED.—January 23 to October 28.

DISTRIBUTION (Figure 9).—Arizona: Cibola

(Yuraa County), Douglas, East Bridge, Gila Bend,

Maricopa County, San Luis, Yuma. California:

Berkeley, Blythe, Brawley, Calexico, Calipatria,

Deep Canyon (Riverside County), El Centro, Holtville, Indio, Needles, Palm Springs, Salton, Simi

95

(Ventura County), Thousand Palms Oasis, Westmorland. Nevada: Las Vegas, Logandale. Utah:

Washington.

REMARKS.—The very coarse pronotal punctures,

incurved spur, and the anterior tibia, together

with far western distribution will help in determining this species.

This species has been reported as damaging roots

of seedling sugar beets in California (Cooperative Economic Insect Report, USDA 1968, 18 (10):

15). It has also been reported as "very active as

a casual feeder on immature flies and excavator

of animal dung" (California Agriculture, 1968,

22 (6): 1-4).

65. Ataenius strigatus (Say)

Aphodius strigatus Say, 1823:212.—Haldeman, 1848:106.

Ataenius strigatus.—Harold, in Gemminger and Harold, 1869:

1067—Horn, 1887:82.—Schmidt, 1922:428.—Fall, 1930:

101.—Cartwright, 1948:151.

DESCRIPTION.—Length 3.6 to 5.5 mm; width 1.6

to 2.4 mm. Elongate-oblong, shining, black, legs

and margin of clypeus reddish black, moderately

convex. Head convex, finely reflexed margin of

clypeus broadly rounded each side of wide, shallow

median emargination, sides nearly straight to

sharply rounded, right-angled genae; anterior

three-fourths of clypeal surface finely transversely

wrinkled, very finely punctate above, the punctures

separated generally by about twice their diameters;

front with transverse band of moderate punctures

separated by their diameters, a little less numerous

on occiput. Pronotum about three-fourths as long

as wide, sides nearly straight and parallel, anterior

angles obtusely rounded, posterior angles widely

rounded, sides and base strongly margined, edge

fimbriate-crenate at anterior and posterior angles,

the short, inconspicuous setae separated by more

than their lengths, crenations noticeable only at

posterior angles, middle of sides without setae, base

arcuate; surface with mixed very fine and coarse

punctures, the fine punctures everywhere evenly

distributed, the coarse punctures finer over middle

anterior disc, larger and denser outward to sides and

base where they may be practically contiguous, generally separated by their diameters more or less on

disc. Elytra approximately five-eighths as wide as

long, humeri strongly dentate, striae fine, deep, the

strial punctures crenating the sides of the weakly
96 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

convex intervals, more strongly on inner sides, lateral intervals not different, surface with very fine,

scattered punctures. Mesosternum shagreened, finely,

closely sculptured, with very fine, short, appressed

inconspicuous hair, carinate between the coxae.

Metasternum shining, midline strong and deep,

disc and outward to sides with scattered, very fine

punctures separated by four or more diameters,

fine rough sculpture at extreme sides, metasternal

triangle strong with rounded edges, minutely

roughened within. First visible abdominal sternum

with fine posterior marginal line, next four sterna

with successively longer, fine fluting along anterior

margins, fluting of 5th sternum only slightly longer

than preceding and not much longer at middle,

nearly even from side to side; surface of middle

sternum moderately finely, closely punctate at middle, gradually coarse and shallow outward to sides

where the punctures are separated by less than

their diameters, 5th sternum with slightly larger,

fine punctures at sides and with a large elongate

puncture or pore at extreme side. Pygidium with

shining, convex, apical lip, disc finely, roughly

eroded. Anterior femora with strong perimarginal

groove, surface smooth, shining anteriorly, posteriorly closely, roughly, moderately punctate, the

punctures tending to form short, irregular, transverse lines. Middle and hind femora shining,

smooth, with scattered, very fine punctures separated by three or four times their diameters,

strong posterior marginal line over slightly more

than half of the femur to knee. Coarse setigerous

punctures usually lacking at knee, rarely a single

puncture. Apical fringe of posterior tibia a group

of five setae, a strong accessory spine, and an intervening setae between spine and spurs. Metatarsal

segment longer than long spur and longer than

following three segments combined. Males have

a group of moderate, setigerous punctures at

middle each side of midline of the metasternum,

the pygidium is longer, with the median part of

the apical lip much wider than in the female.

NEOTYPE (present designation).—Male, USNM

No. 71751.

TYPE-LOCALITY.—Pennsylvania, 5 mi NW of

Davidsburg; 9 September 1968, Paul J. Spangler.

SPECIMENS EXAMINED.—1500+.

DATES COLLECTED.—February 9 to December 28.

DISTRIBUTION (Figure 8).—Alabama: Florence,

Grant, Marshall County, Monte Sano State Park,

near River Cave, Selma. Arizona: Pajarita Mts.,

Pena Blanca, Santa Cruz County. Arkansas: Devils

Den State Park, Fayetteville, Hartford, Hope,

Tuckerman (Jackson County), Washington County, West Memphis. Connecticut: Cornwall, Suffield.

Delaware: Delaware City, Dover, Glasgow, Middletown, Newark, New Castle County, Ship John

Light House, Smyrna, Sussex County, Wilmington. District of Columbia: Washington. Florida:

Daytona Beach, Wewahitchka. Georgia: Augusta,

Griffin. Illinois: Blue Mound, Bridgeview, Caledonia, Carbondale, Carterville, Champaign, Chicago, Crab Orchard, Crete, Des Plaines, Dongola,

Du Page County, Evanston, Farina, Glenview,

Grayslake, Havana, Illinois Beach State Park,

Kickapoo State Park, Lake Michigan Beach, Lorenzo Rd. Prairie (Grundy County), McBride,

New Lennox, Peacock Prairie, Quincy, Roseville,

Union County, Urbana, Vandalia, Wailanda. Indiana: Athens, Bear Willow, Beverly Shores, Bog,

Clayton, Dune Acres, Dunes Park Beach, Fort

Wayne, Grantsburg, Hamlet, Hovey Lake, Indianapolis, Knox County, Lafayette, Marion

County, Menominee, Miller, Owen County, Perry

County, Porter County, Putman County, Richmond, Starke County, Tippecanoe County, Tremount, Turkey Run State Park, Vigo County,

Vincennes, Wabash County, Whiting. Iowa: Ames,

Bedford, Boone, Burlington, Cherokee, Davenport,

Davis County, Des Moines, Eddyville, Estherville,

Floris, Gilbert, Grand Junction, Guttenberg,

Henry County, Independence, Iowa City, Jackson

County, Jefferson County, Keokuk, Lake Okaboji,

Ledges State Park, Leon, Lyon County, Marshall

County, Mount Pleasant, Osage, Polk City, Scott

County, Shenandoah, Shimek, Solon, Store State

Park. Kansas: Argentine, Coffee County, Douglas

County, Lawrence, T. Gardner Lake (Johnson

County), Topeka. Kentucky: Anchorage (Jefferson

County), Bee Spring, Benton, Cadiz, Corbin, Fort

Knox, Hodgenville, Jackson, Lexington, Louisville, Mammoth Cave National Park, Wolf Creek

Lake (Wayne County). Maine: Anson, Monmouth,

Orono. Maryland: Baltimore, Beltsville, Cabin

John, Chesapeake Beach, Chevy Chase, Colesville,

College Park, Contee, Deer Park, East Riverdale,

Edgewood, Gambrelles, Glen Echo, Glover, Hancock, Hebbville, Hyattsville, Jackson's Island, Kenwood Beach, Largo, Marlboro, Patuxent Wildlife

Research Center, Plummers Island, Plum Point,
NUMBER 154

Reisterstown, Salisbury, Shelltown, Tacoma Park,

Thurmont, Timonium, Upper Marlboro. Massachusetts: Billerica, Brookline, Groton, Montgomery. Michigan: Agricultural College, Allegan

County, Bay County, Berrien County, Bridgeman

Warren Dunes, Clinton County, East Lansing,

Galen, Genessee County, Haitland (Lexington

County), Ingham County, Isabella County, Kalamazoo County, Lakeside, Marquette, Mason

County, Midland County, Port Huron, Saginaw,

Saugatuck, Self ridge Field, Van Buren County,

Washtenaw County, Whitmore Lake. Minnesota:

Buffalo, Faribault, Whitewater State Park (Winona

County). Missouri: Clarksville, Columbia, Devils

Elbow, Jefferson City, Louisiana, Midway, Pawnee,

Poplar Bluff, St. Joseph, St. Louis, Steelville, Stoddard County, Vernon County, Warren ton, Willard.

Nebraska: Bennet, Fairmont, Lancaster County,

Lincoln, Malcolm, West Point. New Hampshire:

Rumney. New Jersey: Amy Mtn., Avenel, Boonton, Browns Mills, Five Mile Beach, Hadden

Heights, Hillside Manor, Medford, Morristown,

Montvale, New Brunswick, New Lisbon, Prospertown, Riverton, Salem, Upper Plains, Woodbury.

New York: Chafee, Dryden, Ithaca, Olcott, Oswego,

Potsdam, Rochester, Rockaway Beach, Utica, West

Point, Wyers Point. North Carolina: Balsam, Black

Mtns. Cataloochee Divide, Cedar Mtn., Charlotte,

Raleigh, Sunburst, Waynesville. Ohio: Ada, Adams

County, Ashland, Athens County, Champaign

County, Cincinnati, Cleveland, Columbus, East

Harbor State Park, Erie County, Franklin County,

Greenville, Heidelberg, Holgate, Hudson, Marietta, Miami County, Ottawa County, Portsmouth,

Preble County, West Alexandria, Wooster. Oklahoma: Willis, Woodward. Oregon: "Or." Pennsylvania: Arcola, Bellefonte, Broomall, Buena Vista

Springs (Franklin County), Canadensis, Chester,

Clarks Valley, Davidsburg (5 mi W), Delaware

Water Gap, Easton, Erie, Forest County, Germantown, Harrisburg, Hecton Mills, Howard, Hummelstown, Jeanette, Jefferson County, Lake Merion,

Lima, Long Pond, Maryville, Media, Nanticoke,

New Alexandria, New Cumberland, Nottingham,

Olney, Parkasie, Pen Mar, Philadelphia, Pittsburgh, Pocono Mts., Secane, Sharpsville, State College, Stony Creek Mills, Sumneytown, West

Fairview, Wilmerding, York, Youngstown, Upper

Darby. South Dakota: Brookings, Chamberlin, Elk

97

Point, Fort Thomson, Highmore, Martin, Oak

Lake, Paulson (Lincoln County), Pumpkin Center

(Minnehaha County), Vermilion, Yankton. South

Carolina: Belton, Cayce, Charleston, Chesterfield

County, Clemson, Columbia, Florence, Gramling,

Greenville, Jenkinsville, Lancaster, Marion, McCormick, Mountain Rest, Ritter, Summerville,

Tigerville, Union County, Winnsboro, Yemassee,

York. Tennessee: Burrville, Cardwell Mtn., Cookeville, Harrison Bay State Park, Jackson, Lebanon,

Nashville, Reelfoot Lake. Texas: Austin, Brazos,

College Station, Columbus, Dallas. Utah: Logan

County. Vermont: Burlington, Shelburne, South

Burlington. Virginia: Accomac, Arlington, Ash

Grove, Basye, Blacksburg, Chatham, Delaplane,

Detrick (Shenandoah County), Dumfries, Falls

Church, Holland, Hunters Station (Fairfax County), Lignum, Maryland, Middleburg, Natural

Bridge, Newark, Paris, Pennington Gap, Piney

Run, Powell Gap (Jefferson National Forest), St.

Paul, Straight Creek, Trammells Landing, Westmoreland State Park, Westville, Wildcat Mountain (Fauquier County). West Virginia: Kanawha,

Kearneysville, Maysville (5 mi SE), Orkney

Springs, Wardensville. Wisconsin: Albany, Fond

du Lac, Kenosha, Madison, Milwaukee, Nekoosa

(Wood County), Platteville, Racine, Somers.

Wyoming: Bridge Basin. Canada: Ontario: Hamilton County, East View, Hull, Point Pelee, Jeanpettles Creek (Kent County), Leamington, Long

Point, Norfolk County, Ottawa, Rondeau Prov.

Park, Tillbury, Wentworth, Wheatley, Windsor.

Quebec: Berthierville, Como, La Trappe, Laval

Rap, Lonquenil, Montebello, Montreal, Mount

St. Bruno (Chambly Pr.), Oka, Regaud, "St. J.

Chrisost," St. Placids.

REMARKS.—Ataenius strigatus (Say) is the first

described American Ataenius and has the second

widest distribution. I have seen specimens from

all but ten—mostly far western—states. The roughly punctate anterior femora together with dense

punctures at sides of the pronotum distinguish

the species.

Say's type, presumably lost, probably came from

Pennsylvania. See Fall (1930:101) for discussion

concerning identity of the species. I agree fully

with Fall's conclusion and select as neotype a

specimen from the area in which Melsheimer and

others made many early collections.
98 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

66. Ataenius apicalis Hinton

Ataenius apicalis Hinton, 1937b:195.—Cartwright, 1948:151.

DESCRIPTION.—Length 4.1 to 4.9 mm; width 1.7

to 2.4 mm. Oblong, moderately convex, shining,

black. Head slightly convex, clypeus broadly, shallowly emarginate, rounded each side of emargination, sides nearly straight to right-angled genae,

margin finely recurved, surface weakly transversely

rugulose over anterior third, middle finely punctate, punctures separated by slightly more than

their diameters, gradually finer and closer just in

front of basal band of close moderate punctures

which are generally separated by less than their

diameters. Pronotum rectangular, anterior angles

obtusely rounded, posterior angles broadly rounded,

margined laterally and basally, marginal setae

rather short, about as long as width of marginal

groove and separated by two or more times their

lengths; surface throughout with close, mixed

punctures, the larger punctures closer laterally,

especially in the angles where separated by less

than their diameters, scattered on disc where separated by one to several times their diameter,

gradually slightly finer anteriorly; fine punctures

noticeable throughout. Elytra 2.6 times length of

pronotum, moderately convex, basally margined,

humeri weakly dentate, sides subparallel; striae

fine, crenate-punctate, slightly wider apically; intervals moderately convex, minutely punctate,

apically eroded each side; lateral intervals not

different. Mesosternum shagreened, close, fine,

short decumbent hair, carinate between the coxae.

Metasternum smooth, shining, midline fine, moderately deep, with scattered, minute punctures except for a few occasionally moderate punctures

posteriorly, a little scabriculate sculpture at extreme sides, metasternal triangle smooth, very moderate in depth. Abdominal sterna with rather close,

fine to moderate punctures from side to side,

deeper at sides, separated by about their diameters,

sterna finely fluted in front. Eroded area of pygidium roughly scabriculate, apical margin smooth,

convex, shining. Anterior femora with perimarginal groove, shining, quite evenly punctate, the

punctures finer in front, posteriorly separated by

their diameters, three large elongate punctures

along edge below tibial insertion. Middle and hind

femora much alike with very fine, scattered, numerous punctures, hind femora with a row of three

or four coarse punctures at knee, and postfemoral

line half the distance from knee to trochanter.

Posterior tibiae with strong accessory spine, fringe

of six setae together and another between accessory spine and spurs, first tarsal segment about

one-fourth longer than long spur, about same

length longer than following three segments combined.

HOLOTYPE.—USNM 68188.

TYPE-LOCALITY.—Mexico: Vera Cruz, Minatitlan.

SPECIMENS EXAMINED.—150+ .

DATES COLLECTED.—March 16 to December 10.

DISTRIBUTION (Figure 16).—Alabama: Black

Warrior National Forest, Monte Sano State Park,

Sheffield, Trinity. Arkansas: Cohan Plant, Devils

Den State Park, Hart Ford, Little Rock, Stuttgart,

Taylor, Tuckerman, Washington County. Delaware: "Delaware." Florida: Torreya State Park

(Liberty County). Georgia: Arlington, Atlanta,

Mount Berry, Newton. Illinois: Dongola (Union

County), Olive Branch. Indiana: Hovey Lake

(Posey County). Kansas: Lawrence. Kentucky: Anchorage (Jefferson County), Arora (Monroe County). Louisiana: Calcasieu, Copley, Fount, Harahan,

Lafayette, New Orleans, Pilate Opelousas, Simsboro (Lincoln Parish). Maryland: Beltsville, College Park, Edgewood, Hancock. Michigan: Allegan.

Mississippi: Madison County, Pearl. Missouri: Dardene Prairie. Nebraska: Lincoln. North Carolina:

Wake County. Ohio: Athens, Franklin County,

Scioto County. Pennsylvania: Philadelphia Neck.

South Carolina: Anderson County, Cherokee County, Clemson, Clinton, Florence, Lancaster, McCormick, Pee Dee, Union County. Tennessee:

Citico, Cookeville, Jackson, Memphis, Oak Ridge.

Texas: Anderson County, Devers, Harris County,

Liberty County, Orange County, Seabrook. Virginia: Arlington, Paris, Richmond. West Virginia:

Kanawha.

REMARKS.—Ataenius apicalis Hinton is one of

the strigatus complex of species and may easily

be misidentified; however, it is larger than A.

strigatus, the anterior femur has three large, strong,

elongate punctures at extreme edge below the tibial

insertion, the posterior femur has a row of three

or four coarse setigerous punctures at the knee,

usually has six setae in the posterior tibial fringe,

and apically the elytral intervals are noticeably

eroded on each side. Ataenius strigatus is usually

without coarse setigerous punctures at the knee,
NUMBER 154 99

rarely with single punctures, and rarely shows a

trace of apical erosion on elytral intervals over

the elytral declivity. Ataenius apicalis is widely

distributed in eastern states but is not a very common species.

67. Ataenius fattigi Cartwright

Ataenius fattigi Cartwright, 1948:151.

DESCRIPTION.—Holotype Male: Length 4.8 mm;

width 2.25 mm. Oblong, shining, black, legs brownish piceous. Head moderately convex, a wide band

of coarse, closely placed punctures across the base,

very fine, close punctures over front and clypeus,

very faint traces of transverse rugulosity perceptible

at anterior edge of clypeus. Clypeus widely shallowly

emarginate, broadly rounded each side, the edge

finely reflexed. Pronotum rectangular, three-tenths

wider than long, marginal line of sides and base

deep and entire, edge not crenate, anterior angles

obtusely rounded, posterior angles obtuse but distinct, surface with intermixed coarse and very fine

punctures throughout, the coarse punctures slightly

smaller and less closely placed anteriorly at middle,

dense at sides, especially in anterior angles where

they are separated by less than their diameters

but are not confluent. Elytra one-fourth longer

than wide, sides parallel, humeri strongly dentate,

striae strong, crenately punctate, intervals almost

flat on disc, only strongly convex at apex, all intervals similarly sparsely, minutely, rather irregularly

punctate. Mesosternum with a moderately long

intercoxal carina. Metasternum with a little coarse,

rugose sculpture at extreme sides, otherwise shining and finely punctate, a group of a dozen or so

coarse punctures posteriorly each side of the deeply

impressed longitudinal median line, the median

line deeper at each end and not abruptly terminated. Abdominal sterna fluted in front, coarsely

punctate at sides, the punctures gradually finer

across the middle. Profemurs with perimarginal

groove, the posterior face closely, coarsely punctate, the punctures becoming rapidly finer toward

the base and lower edge. Anterior tibiae weakly

crenate above upper tooth, which is nearer apex

than base; first tarsal joint subequal to following

two joints combined, first two tarsal joints together and spur equal in length. Middle and posterior lemurs finely punctate, marginal line deep,

half the length of the femur. Posterior tibia with

intervening seta between spurs and the strongly

developed accessory spine, six setae in terminal

fringe between accessory spine and outer apical

angle, first joint of posterior tarsus longer than

long spur and subequal to remaining four joints

combined.

Female: Length 5.4 mm; width 2.4 mm. Similar

to holotype male except that the coarse punctures

of the pronotum are not quite so numerous, the

metasternum is finely punctate without the group

of coarse punctures, the pygidium is not as long,

and the hind tibiae bear a fringe of seven setae

on one and eight on the other.

HOLOTYPE.—USNM 58821.

TYPE-LOCALITY.—Georgetown County, South

Carolina, at junction of highways U. S. 17 and

South Carolina 786 to Belle Isle Gardens.

SPECIMENS EXAMINED.—318.

DATES COLLECTED.—February 8 to November 1.

DISTRIBUTION (Figure 21).—Delaware: Rehoboth

Beach. District of Columbia: Washington. Florida:

Archbold Biological Station, Austin Carey Memorial Forest, Avon Park, Blountstown, Canal

Point, Chipley (5 mi E), Crestview, Dunedin, Enterprise, Fort Myers, Gainesville, Gunntown, Highlands State Park, Jacksonville, Kissimmee, Knights

Key, La Belle, Lake Alfred, Lake Lucy, Levy

County, Little Manatee River, Marianna, Merritt

Island, Molino, Monticello, Moore Haven, Ocala

National Forest, Ochopee, Okeechobee, Oldtown,

Olustee, Orlando, Punta Gorda, Sanford, Sarasota,

Tampa, Torreya State Park, Volusia County, West

Palm Beach, Westville, Wewahitchka, Zolfo

Springs. Georgia: Calhoun County, Hinesville,

Nashville (17 mi E on Alapaha River), Newton,

Valdosta, Vidalia, Waycross. Maryland: Edgewood,

Glen Burnie, Shelltown. Massachusetts: Billerica.

Michigan: Detroit. Mississippi: Keesler Field (Biloxi), Long Beach, Lucedale, Ocean Springs. New

Jersey: Anglesea, Atlantic City, Atsion, Prosperton, Salem, Sea Island City, Wildwood. New York:

Rockaway Beach. North Carolina: Swan Quarter.

Pennsylvania: Philadelphia. Rhode Island: North

Kingston. South Carolina: Aiken State Park,

Berkeley County, Bethune, Blackville, Blaney,

Cayce, Charleston, Columbia, Darlington County,

Florence, Georgetown County, Green Pond, Hampton, Kline, Meredith, Ritter, Saluda County, Seabrooks Island, Summerville, Walterboro, Yemassee.
100 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 24.—Aedeagi of six species of Ataenius: a, c, A. inquisitus Horn; b, d, A. chapini

Hinton; e, g, A. griffini, new species; /, h, A. convexus Robinson; i, j , A. aequalis Harold; k, I,

A. platensis (Blanchard).

Texas: Conroe. Virginia: Fort Monroe, Mount

Vernon. West Virginia: Kanawha. Wisconsin:

Wood County.

REMARKS.—Ataenius fattigi is very close to A.

strigatus (Say) but is usually larger, the transverse

wrinkles of the clypeus are very weak or absent,

the coarse punctures in the anterior angles of the

pronotum are close but rarely confluent, the setae
NUMBER 154 101

between the accessory spine and outer angle of the

posterior tibia number six or seven, and most of

the specimens seen have been from southern states.

Ataenius strigatus is smaller, clypeal rugulosity is

more extensive and noticeable, at least a few coarse

punctures in the anterior angles of the pronotum

are confluent, the setae of the posterior tibia number four or five, and the species has a more

northern distribution.

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104 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

PLATK 1.—Dorsal views: a, Pseudataenius contortus, new species; b, Ataenius simulator Harold.
NUMBER 154

105

a

PLATE 2.—Dorsal views: a, Ataenius insculptus Horn (wavy line at bottom represents surface of

elytrae in cross section); b, Ataenius superficialis, new species.
106 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

PLATE 3.—Dorsal views: a, Ataenius stephani, new species; b, Ataenius lobatus Horn.

B8/7


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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.
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