Geomyphilus Gordon and Skelley, 2007

Dellacasa, Marco, Dellacasa, Giovanni, Skelley, Paul E. & Gordon, Robert D., 2017, Systematic revision of the species of Geomyphilus (Coleoptera: Scarabaeidae: Aphodiinae) of Mexico and neighboring countries with description of a new Mexican species, Insecta Mundi 2017 (590), pp. 1-19 : 2-3

Genus Geomyphilus Gordon and Skelley, 2007

Geomyphilus Gordon and Skelley, 2007: 393 .

Type species. Aphodius insolitus Brown, 1928 (original designation).

Diagnosis. Rather small to medium size species (length 4.0- 7.5 mm), elongate, moderately convex, shiny or weakly shiny, glabrous or almost glabrous. Piceous; clypeal margin, sides of pronotum and elytral margins reddish. Head with epistome gibbous, almost evenly coarsely punctured; clypeus sinuate at middle, denticulate, angulate or round at sides, lateral margins glabrous or, at most, with extremely short sparse bristles; genae obtusely round, protruding or not from the eyes; frontal suture almost obsolete or feebly tuberculate. Pronotum transverse, moderately convex, sometimes depressed near hind angles; dually or evenly punctured; hind angles obtuse or widely truncate, base bordered or with border more or less widely interrupted at middle but therein crenulate by coarse punctures. Scutellum small, triangular. Elytra oblong, convex, denticulate or not at shoulder; finely striate, striae feebly crenulate or not; interstriae almost flat, finely sparsely punctured, glabrous or almost imperceptibly pubescent on preapical declivity. Fore tibiae distally tridentate and proximally not serrulate on outer margin; upperside smooth or faintly punctured. Hind tibiae with rather feeble transverse carinae on outer face; apically fimbriate with spinules irregularly unequal. Pygidium subrugosely confusedly punc- tured, punctures with rather elongate recumbent setae; apical margin with few straight setae. Sexual dimorphism shown in males mostly by fore tibiae spur stout, strong or, at least, digitiform, abruptly downward bent. Aedeagus with elongate, slender paramera abruptly curved and more or less acuminate apically, and with very slender elongate or lobate membranous dorsal or apical processes. Epipharynx round laterally, feebly bisinuate at anterior margin; epitorma drop-shaped; corypha with apical clump of irregularly elongate celtes; pedia densely pubescent mostly toward epitorma, mixed short chaetae almost serially arranged; chaetopariae rather short and dense.

Distribution. Nearctic and Neotropical regions.

Biology. Species rodent burrows associate.