Three new species of the genus Sphaerobulbus from China (Coleoptera: Staphylinidae)

Three new species of the genus Sphaerobulbus Smetana, 2003 from China are described: S. smetanai sp. nov. from Sichuan, S. guangxiensis sp. nov. from Guangxi and S.？ningliei sp. nov. from Yunnan. Diagnostic characters for the new species are illustrated. An updated key to species of Sphaerobulbus is provided, and habitus photos of most Sphaerobulbus species are provided.