Description of a New Species of Cafius Stephens (Coleoptera: Staphylinidae: Staphylininae) from Australia

Cafius newtoni Park and Ahn, new species is described from along the coasts of Australia. Adults of the new species are similar to those of Cafius bryanti Cameron in external structure, but can be distinguished from C. bryanti by the transverse antennomeres 8–10, the head wider than pronotum, and the form of the aedeagus and its internal structures. A description and illustrations of habitus and diagnostic characters of the new species are provided.