Ball & Maddison 1987. Classification and evolutionary aspects of the species of the New World genus Amblygnathus Dejean, with description of Platymetopsis, new genus, and notes about selected species of Selenophorus Dejean (Coleoptera: Carabidae: Harpalini). Transactions of the American Entomological Society (Philadelphia), 113(3) 1987: 189-307