Systematic revision of the species of Geomyphilus (Coleoptera: Scarabaeidae: Aphodiinae) of Mexico and neighboring countries with description of a new Mexican species Author Dellacasa, Marco Author Dellacasa, Giovanni Author Skelley, Paul E. Author Gordon, Robert D. text Insecta Mundi 2017 2017-12-29 2017 590 1 19 journal article 10.5281/zenodo.5169501 1942-1354 5169501 749655B7-5F26-4C47-9292-F97C5AAE59FF Geomyphilus rubiginosus ( Horn, 1870 ) ( Fig. 36–40 ) Aphodius rubiginosus Horn, 1870: 127 ; 1887: 39 . Aphodius ( Koshantschikovius ) rubiginosus ; Schmidt 1913: 150 ; Dellacasa 1988: 191 . Geomyphilus rubiginosus ; Gordon and Skelley 2007: 400 . Type locality. Camp Grant, San Pedro River, Arizona [ U.S.A. ]. Type repository. Museum of Comparative Zoology. Harvard University, Cambridge. MA ( U.S.A. ) ( type not examined). Redescription. Length 4.0–5.0 mm; moderately elongate; moderately convex, feebly shiny, glabrous. Red to dark brown; epistome and pronotal disc slightly darker; antennal club rufo-testaceous. Head with epistome slightly convex on disc, antero-medially depressed toward clypeal margin, densely almost evenly punctured, punctures somewhat coarser distally; clypeus broadly sinuate at middle, subangulate at sides, lateral margins regularly arcuate, thinly bordered, edge slightly raised, glabrous; genae obtusely round, shortly sparsely ciliate, protruding from the eyes; frontal suture barely distinct and faintly tuberculate; front evenly coarsely rather densely punctured. Pronotum transverse, moderately convex, not explanate at sides, coarsely and densely dually punctured; large punctures, two times larger than small, not denser on sides and lacking on disc; small punctures almost evenly scattered throughout; lateral margins feebly arcuate, rather thinly bordered, edge glabrous; hind angles obtuse; base regularly arcuate, thinly bordered. Scutellum somewhat convex, finely alutaceous, coarsely irregularly punctured on basal two thirds. Elytra feebly widened posteriorly; striae fine, moderately impressed, closely punc- tured, crenulate; interstriae almost flat, rather coarsely irregularly punctured. Hind tibiae upper spur shorter than first tarsal segment; latter almost as long as following three segments combined. Male: fore tibiae spur relatively stout, abruptly downward curved; head and pronotum more transverse, less convex and less densely punctured; metasternal plate distinctly excavate; aedeagus Fig. 39–40 . Female: fore tibiae spur slender and feebly arcuate; head and pronotum narrower, more convex and more densely punctured; metasternal plate almost flat. Material examined. U.S.A. : Arizona : Wickenburg-Simpson Ranch, Maricopa, 12S 34.0765E 37.59185N UTM, 16–23.I.2008 , 2013 ft., leg. P. Kaufman, deer dung baited pitfall in Thomomys bottae burrow (6 exx., DCGI ). Distribution. U.S.A. ( Arizona ). Biology. Almost certainly a rodent burrows associate species collected from January to April. Trapped from burrows and reared from dung of Thomomys bottae .