Cranium heavily sclerotized, lightly pigmented. Antennae 3-4 segmented, last segment greatly reduced in size. Frontoclypeal suture present. Labrum at apex rounded or weakly lobed. Epipharynx rounded or lobed, with symmetrical tormae.
Mandibles elongate, asymmetrical.
Abdominal segments 3-7 with 2 annuli, each with 1 or more transverse rows of short setae. Anal opening Y-shaped or longitudinal, surrounded by 2 fleshy lobes. A systematic revision of the Holarctic genus Platycerus Geoffroy. W. Junk, Gravenhage, Netherlands. Checklist of the beetles of Canada, United States, Mexico, Central America and the West Indies.