hainanensis, Vanmanenia Chen [Y.-Y.] & Zheng [C.-Y.] in Zheng & Chen 1980:93 [100], Fig. 4 [Acta Zootaxonomica Sinica v. 5 (no. 1); ref. 4838] A mountain stream of Chang Jiang, Qiongzhou Xian, Hainan Island, China. Syntypes: IHASW 76-V-9142 (1), 76-V-9168 (1), 76-V-9173 to 79 (7). JNU 76-V-9181 (1), 76-V-9183 (1), 76-V-9185 (1), 76-V-9188 (1), 76-V-9190 to 91 (2). English description on p. 100. •Valid as Vanmanenia hainanensis Chen & Zheng 1980 -- (Zheng 1981:56 [ref. 22557], Chen in Kuang et al. 1986:158 [ref. 26639], Zheng in Pan et al. 1991:269 [ref. 23876], Zhu 1995:131 [ref. 25213], Chen & Tang in Yue 2000:457 [ref. 25272], Tang & Chen 2000:5 [ref. 25445], Kottelat 2012:72 [ref. 32367], Kottelat 2013:197 [ref. 32989], Yi et al. 2014:96 [ref. 33322], Zhang et al. 2016:163 [ref. 34477], Kottelat 2017:94 [ref. 35488], Li et al. 2019:128 [ref. 36698], Zhang et al. 2019:424 [ref. 36699]). Current status: Valid as Vanmanenia hainanensis Chen & Zheng 1980. Gastromyzontidae. Distribution: Chaghua River drainage, Hainan Island, China and possibly Vietnam. Habitat: freshwater.