Platyceroides Benesh, 1946

Type species. Platycerus agassii LeConte, by original designation.

Generic description. Length: 7.6–13.2 mm. Width: 3.2–5.8 mm. Color: Black to reddish brown, some with metallic reflections. Head: Anterior margin subtruncate (Fig. 20) or weakly emarginate (Fig. 19), not deeply, semicircularly excised as in Platycerini . Canthus weak but distinct (anterior margin of eye located on dorsal surface of head, per Holloway (1969)). Antenna partially geniculate; antennal club composed of 3 antennomeres in both sexes. Mandibles short in both sexes (see Figs. 12 A–B), approximately ¼ to ½ length of head; form not strongly sexually dimorphic, simply falcate, at most with weakly indicated teeth internally. Pronotum: Form broadly rounded, narrowly to broadly explanate. Elytra: Surface punctate, punctures arranged in striae or irregularly. Wings: Males with functional wings (except P. keeni), females flightless in all species. Abdomen: Male genitalia with internal sac (flagellum) permanently everted, with wing-like accessory lobes of median lobe moderately sclerotized when present; form of flagellum variable, with sclerotized armature distally (Fig. 1).