Setodius Gordon and Skelley 2007
Setodius Gordon and Skelley 2007: 283.

Setodius diogenes Gordon and Skelley Photo by P. Skelley.

Type species. Aphodius suspectus Mann 1911: 107, by original designation.

Diagnosis. Body length 3.4-5.0 mm, elongate, parallel-sided, not flattened, black, elytral often paler. Head lacking frontal tubercles, surface heavily rugose or coarsely punctured. Clypeus rounded each side of middle. Pronotum lateral margin with setal fringe; with basal marginal line. Scutellum pentagonal, not depressed below surface. Elytral surface often entirely or partially pubescent. Metatibial apical spinules short, equal in length.

Distribution. Northwestern North America.

Composition. Setodius contains 3 species.

Setodius bryanti (Brown 1929: 88) [Aphodius], SW-Canada, NW-USA.
Setodius edmontonus (Brown 1929: 87 [Aphodius]), Alberta-Canada.
Setodius diogenes Gordon and Skelley 2007: 286, NW-USA.
                  = Aphodius suspectus Mann 1911: 107 [not Aphodius
                  suspectus Sharp 1876: 70].

Life History. Collecting data for all species indicate they are associated with ants.

Larvae. Unknown.

References:
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.