Aside from revisions of some genera and catalogs, little systematics work has been conducted on this group. Species are widely distributed in the tropics. Fourteen genera and about 60 species occur in the New World. Dicraeodon Erichson 1847 Hapalonychoides Martinez Hybochaetodus Arrow 1909 Hybosorus MacLeay 1819 Pachyplectrus LeConte 1874 Metachaetodus Borre 1886 Ecology . Little life history information is known for hybosorids.
Adults feed on carrion in the early stages of decomposition and are attracted to lights at night.
Adults of Hybosorus are known to stridulate. Larvae have been collected in decomposing plant material. Cranium heavily sclerotized, brown to dark brown. Frontoclypeal suture distinct. Labrum at apex with 3 truncate lobes.