Additional fauna of Coelostoma Brullé, 1835 from China, with re-establishment of Coelostoma sulcatum Pu, 1963 as a valid species (Coleoptera, Hydrophilidae, Sphaeridiinae)

Aedeagus of Coelostoma sulcatum Pu, 1963 (dorsal view) A, B holotype of C. sulcatum A labels B aedeagus C from Jing’an County (Jiangxi) D from Shenzhen City (Guangdong) E from Longlin County (Guangxi) F from Xishuangbanna (Yunnan) G from Xima (昔马) Town (Yunnan) H from Tongbiguan Town (Yunnan) I from Muotuo County (Xizang) J from Macao. Scale bar: 0.5 mm (A–J).