pachycephalus, Yunnanilus Kottelat [M.] & Chu [X.-L.] 1988:74, Fig. 10 [Environmental Biology of Fishes v. 23 (nos 1-2); ref. 13392] Stream Weizhangho at Yangliu, 26°38'N, 104°15'E, Xuanwei County, Yunnan Province, China. Holotype: KIZ 82100392. Paratypes: KIZ 82100328-40 (13), 82100346-50 (5), 82100352-91 (40), 82100393-410 (18). Type catalog: Du et al. 2013:351 [ref. 32939]. •Valid as Yunnanilus pachycephalus Kottelat & Chu 1988 -- (Yang & Chen 1995:23 [ref. 23555], Zhu 1995:107 [ref. 25213], Chen et al. 2012:62 [ref. 31907], Kottelat 2012:135 [ref. 32367], Yang in Lan et al. 2013:251 [ref. 32910] as pachycephalu, Du et al. 2015:253 [ref. 34050], Zhang et al. 2016:150 [ref. 34477]). •Valid as Eonemachilus pachycephalus (Kottelat & Chu 1988) -- (Du et al. 2021:318 [ref. 38600]). Current status: Valid as Eonemachilus pachycephalus (Kottelat & Chu 1988). Nemacheilidae. Distribution: East Asia: Yunnan (China). Habitat: freshwater.