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 wui Orchymont, 1940 (dorsal view) A illustration by Orchymont (1940) B from Pingyi County (Shandong) C from Getiaopa (葛条爬) Village (Henan) D from Hanzhong (Shaanxi) E from Taoyuan County (Hunan) F from Quanzhou City (Zhejiang) G from Wuyishan (Fujian) H from Mt. Jiulianshan (Jiangxi) I from Mt. Chebaling (Guangdong). Scale bar: 0.5 mm.