Phylogenetic analyses and taxonomic revisions were conducted on the scarabaeoid family Hybosoridae. Two new subfamilies of Hybosoridae are described, Liparochrinae and Pachyplectrinae. Phylogenetic analysis and a systematic revision of the New World subfamily Anaidinae are provided. The phylogenetic analyses of the family Hybosoridae (co-authored with David C. Hawks), based on molecular data from the 28S D2 and D3 regions rDNA and 18S rDNA, support the monophyly of Hybosoridae. Five clades (referred to as subfamilies) comprise the Hybosoridae: Anaidinae, Ceratocanthinae, Hybosorinae, Liparochrinae (new subfamily), and Pachyplectrinae (new subfamily).
A catalog of the world Hybosoridae species is provided (co-authored with Alberto Ballerio).