The species of Hypocera are reviewed and their identities more completely defined. H. flavipennis (Enderlein) is synonymized with H. rectangulata Malloch (syn. n.). New characters are given to aid recognition of males of the closely similar Nearctic Region species H. americana Borgmeier and H. ehrmanni Aldrich. Life history observations and first larval descriptions are given for H. mordellaria (Fallén), which is a scavenger on dead insects. A phylogenetic analysis and a key to species are provided.