A new species of Acetalius Sharp from eastern China (Coleoptera, Staphylinidae, Pselaphinae).

The genus Acetalius Sharp currently contains two species from Japan. In this paper, a third species, A. grandis Yin & Li, sp. n., is described from eastern China. The foveal pattern of Acetalius, and polymorphism and major diagnostic features of A. grandis are figured. An updated key to Acetalius species is provided. [ABSTRACT FROM AUTHOR]