Type genus: Pachyplectrus LeConte, 1874. Here designated.

Description. Length 4.0-11.0 mm. Shape rounded. Color brown. Head not deflexed. Antennae 10-segmented, with 3-segmented, opposable club; club oval, first segment cupuliform. Eye canthus developed. Eyes developed. Labrum produced beyond apex of clypeus, prominent. Mandibles produced beyond apex of labrum, prominent, external edge rounded at base, apex pointed, external surface not sculptured. Maxillae with 4-segmented palpi, labium with apex not indented, with 4 -segmented palpi. Pronotum convex, smooth or punctate; base rounded. Scutellum exposed, triangular. Elytra convex, smooth punctate, striae well-defined or not. Pygidium concealed by elytra. Hind wings well-developed, with M-Cu loop present, MP3 and MP4 veins present. Venter with surface smooth. Prosternum tetra-concave. Mesosternum not invaginated. Abdomen with 5 free sternites and with 8 functional spiracles; spiracles 1-7 situated on pleural membrane, spiracle 8 situated in tergite. Protibiae with 3 teeth. Meso- and metatibia with well-developed transversal carinae. Tarsi 5-5-5. Ventral position of protarsi apical of second tibial tooth. Tarsal claws simple. Male genitalia symmetrical.

Composition. The subfamily Pachyplectrinae, includes two genera and three species.

Distribution. Nearctic and Palaearctic regions.

Natural history. Species of Pachyplectrinae occur in dry, sandy areas. Adults of Pachyplectrus laevis LeConte were found under carrion and owl pellets (Ocampo 2002). Adults of Brenskea Reitter are attracted to lights. Larvae are unknown.

Bibliography:
Ocampo, F. C. 2006. Phylogenetic Analysis of the Scarab Family Hybosoridae and Monographic Revision of the New World Subfamily Anaidinae (Coleoptera: Scarabaeidae). Bulletin of the University of Nebraska State Museum, Vol. 19. 210pp.