Roughly "one in four animals" on earth is a beetle. However, many species still remain undescribed. This resource, from the US Department of Agriculture's Systematic Entomology Library (SEL), houses half a dozen Internet-based resources on Coleoptera. Resources are solid but vary in depth. The collection of sites covers wide ground: Leaf chafer scarabs, a complete online Handbook of Palearctic Flea Beetles, Elaphidiini Beetles ("a large tribe of primarily nocturnal longhorned woodboring beetles"), Coleoptera (museum) collections, and two sites on Coleoptera researchers. The combined information from these sites on Coleoptera represents a solid online resource for researchers, educators, and students.