Terataki, a new genus of Staphylinini (Coleoptera: Staphylinidae: Staphylininae) from South America.

A new genus of Xanthopygina is described here as Terataki gen. n. and includes the following species: Te. badiipennis comb. n., Te. caterinoi sp. n., Te. erithracus comb. n. and Te. liliputanum comb. n. Lectotypes are designated for Creophilus badiipennis Nordmann, C. chloris Nordmann, C. erithracus Nordmann and Polyphematiana liliputana Bernhauer. Creophilus chloris is shown to be a junior synonym of C. erithracus and Trigonopselaphus nobilis Wendeler a junior synonym of C. badiipennis. A key and illustrations of structural features are provided for the identification of specimens.