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Oscarinus Gordon and Skelley 2007
Oscarinus Gordon and Skelley 2007: 163.

Oscarinus crassuloides (Fall)
Oscarinus indutilis (Harold)
Photos by P. Skelley.
Family........... Subfamily......


Aphodiinae Overview

Aphodiinae Key

Aphodiini Key

Type species. Aphodius crassulus Horn 1870: 117, by original designation.

Diagnosis. Body length 2.9-5.8 mm, ovate, robust, dark reddish-brown to black (rarely red). Head surface variable, smooth to rugose. Clypeal edge smooth to distinctly toothed, lacking fringe of setae. Pronotum robust, lacking fringe of setae; basal marginal line present. Scutellum triangular. Elytra lacking humeral tooth. Protibial dorsal surface impunctate. Metatibial apical spinules usually alternately unequal, short or long. Male parameres lacking any processes, apically widened and dorsoventrally flattened.
Distribution. Eastern and southwestern North America to Mexico.
Composition. Oscarinus contains 18 species.

Oscarinus abusus
(Fall 1907: 242) [Aphodius], S-central USA.
Oscarinus bottimeri (Cartwright 1957: 56) [Aphodius], TX-USA, Mexico.
Oscarinus brimleyi (Cartwright 1939: 357) [Aphodius], SE-USA.
Oscarinus crassuloides (Fall 1907: 243) [Aphodius], SW-USA, Mexico.
Oscarinus crassulus (Horn 1870: 117) [Aphodius], SE-USA.
Oscarinus floridanus (Robinson 1947: 169) [Aphodius], FL-USA.
Oscarinus indutilis (Harold 1874: 178) [Aphodius], Mexico, Guatemala.
Oscarinus lodingi (Cartwright 1957: 59) [Aphodius], SE-USA.
Oscarinus matiganae (Paulsen 2006: 63-67) [Aphodius], central US.
Oscarinus odocoilis (Robinson 1939: 57) [Aphodius], NJ-USA.
Oscarinus pseudabusus (Cartwright 1957: 60) [Aphodius], Central-USA.
Oscarinus rusicola (Melsheimer 1844: 136) [Aphodius], USA and S-Canada.
                  = Aphodius aurelianus Harold 1863: 375.
                  = Aphodius curtus Haldeman 1848: 105.
                  = Aphodius mcdonaldi Robinson 1946: 56.
                  = Aphodius ruricola Haldeman 1848: 105 (unjustified emendation).
Oscarinus silvanicus (Cartwright 1972: 59) [Aphodius], E-USA.
Oscarinus spiniclypeus (Hinton 1934: 190) [Aphodius], Mexico.
Oscarinus stuessyi Gordon and Skelley 2007: 181, SW-USA.
Oscarinus texensis (Cartwright 1972: 60) [Aphodius], TX-USA.
Oscarinus welderi Gordon and Skelley 2007: 183, TX-USA.
Oscarinus windsori (Cartwright 1939: 357) [Aphodius], SE-USA.
Life History. Most members of Oscarinus appear to specialize on deer dung, O. pseudabusus appears to prefer prairie dog dung. The most frequently collected species, O. rusicola, appears to be surface dung generalist.
Larvae. Unknown.

Gordon, R. D., and P. E. Skelley. 2007. A monograph of the Aphodiini inhabiting the United States and Canada (Coleoptera: Scarabaeidae: Aphodiinae). Memoirs of the American Entomological Institute 79: 580 pp.
Skelley, P. E., M. Dellacasa, G. Dellacasa, and R. D. Gordon. 2007. Checklist of the Aphodiini of Mexico, Central and South America (Coleoptera: Scarabaeidae: Aphodiinae). Insecta Mundi 0014: 1-14.

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Author: Paul Skelley

Generated on: 01/MAY/08.....Last modified: 01/MAY/08
University of Nebraska State Museum - Division of Entomology