Within the Hybosoridae, no phylogenetic analysis has been conducted, and a key to the genera does not exist. My proposed research will provide a revision and phylogenetic analysis of the genera, keys with illustrations, and detailed descriptions of the genera and species. Hybosorid larvae are distinct and provide the primary evidence that the group is a family. Larvae possess prothoracic and mesothoracic stridulatory structures and three truncate lobes at the apex of the labrum, both of which are unique to this group. These characters support the hypothesis of monophyly of Hybosoridae.
Adults feed on carrion in the early stages of decomposition and are attracted to lights at night.
Larvae have been collected in decomposing plant material. Other than adults being attracted to lights, little is known about the biology of members of this family.