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Geomyphilus Gordon and Skelley 2007
Geomyphilus Gordon and Skelley 2007: 393.

Geomyphilus insolitus (Brown)
Geomyphilus rubiginosus (Horn)
Photos by P. Skelley.
Family........... Subfamily......


Aphodiinae Overview

Aphodiinae Key

Aphodiini Key

Type species. Aphodius insolitus Brown 1928: 18, by original designation.


Diagnosis. Body length 4.0-7.7 mm, elongate, somewhat to distinctly flattened, reddish-brown to nearly black, elytra never with distinct color pattern. Head smooth, lacking tubercles. Clypeus lacking fringe of setae. Pronotum variably developed, some explanate laterally, lacking lateral fringe of setae; base with marginal line. Elytra glabrous. Metatibial apical spinules long and alternately unequal.

Distribution. North America into Mexico.
Composition. Geomyphilus presently contains 16 species.

Geomyphilus alabama
(Skelley and Gordon 1995: 217) [Aphodius], SE-USA.
Geomyphilus (s.l.) barrerai (Islas 1956: 493) [Aphodius], Mexico.
Geomyphilus (s.l.) coronadoi (Islas 1955: 495) [Aphodius], Mexico.
Geomyphilus essigi (Saylor 1935: 134) [Aphodius], CA-USA.
Geomyphilus geronimo Gordon and Skelley 2007: 405, AZ-USA.
Geomyphilus insolitus (Brown 1928: 18) [Aphodius], Central-USA.
Geomyphilus kiowensis (Gordon and Salsbury 1999: 65) [Aphodius], NE-KS-TX-USA.
Geomyphilus (s.l.) macgregori (Islas 1955: 223 [Aphodius], Mexico.
Geomyphilus leptotarsis (Brown 1928: 15) [Aphodius], N-USA, Alberta-Canada.
Geomyphilus (s.l.) pierai (Lobo and Deloya 1995: 44, in Deloya and Lobo 1995) [Aphodius], Mexico.
Geomyphilus pinolus Gordon and Skelley 2007: 408, Idaho-USA.
Geomyphilus rubiginosus (Horn 1870: 127) [Aphodius], AZ-USA.
Geomyphilus thomomysi (Brown 1928: 17( [Aphodius], Central-USA, Man.-Canada.
Geomyphilus russeus (Brown 1928: 14) [Aphodius], IL-NM-NE-USA.
Geomyphilus ungulatus (Fall 1901: 254) [Aphodius], CA-USA.
Geomyphilus viceversus (Paulsen 2006: 96) [Aphodius], central US.
Life History. Where data are known, members of Geomyphilus are associated with rodent burrows, probably feeding on their dung. Known rodent hosts include pocket gophers and prairie dogs, but some data indicates rarer species may be with kangaroo rats, voles, or other rodents.
Larvae. Unknown.
Status of Classification. Gordon and Skelley (2007) recognize 3 species groups, which do not include the Mexican species placed here. These groups are based on external and genitalic characters, some of which appear variable or intermediate between groups.

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