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

摘要

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