costata, Diplophysa Kessler [K. F.] 1876:29, Pl. 3 (fig. 4) [v. 2 (pt 4); ref. 2595] Hu-lun [Dalai-Nor, Dalai-nor] Lake at 43°N [43°18'N, 116°39'E], Liaoning, Inner Mongolia, China, elevation 4200 feet. Holotype (unique): ZIN 2477. For remarks on sysematics see Kottelat 2006:55 [ref. 28831]. •Valid as Lefua costata (Kessler 1876) -- (Berg 1949:887 [ref. 20661], Wang 1984:81 [ref. 22951], Zhu 1989:20 [ref. 17744], Zhu 1995:107 [ref. 25213], Bogutskaya & Naseka 1996:48 [ref. 22798], Cheng & Zhou 1997:195 [ref. 26385], Kim 1997:285 [ref. 24032], Reshetnikov et al. 1997:743 [ref. 24702], Vasil'eva 1998:96 [ref. 23591], Kim et al. 2000:224 [ref. 25434], Pietsch et al. 2001:140 [ref. 25688], Wang et al. 2001:167 [ref. 26566], Kim & Park 2002:197 [ref. 25913], Bogutskaya et al. 2001:45 [ref. 26178], Choi et al. 2003:178, 518 [ref. 26218], Jang et al. 2003:119 [ref. 27681], Naseka & Bogutskaya 2004:284 [ref. 27838], Bogutskaya & Naseka 2004:115 [ref. 28183], Mihara et al. 2005:157 [ref. 28201], Kottelat 2006:55 [ref. 28831], Ocock et al. 2006:29 [ref. 28933], Bogutskaya et al. 2008:340 [ref. 30085], Kottelat 2012:87 [ref. 32367], Zhang et al. 2016:129 [ref. 34477], Hosoya et al. 2018:199 [ref. 36197], Ohgita & Matsunuma 2020:10 [ref. 37953], Du et al. 2021:4 [ref. 38600], Guo 2021:487 [ref. 38618], Dyldin et al. 2023:[9] [ref. 40328]). Current status: Valid as Lefua costata (Kessler 1876). Nemacheilidae. Distribution: East Asia: northern China, Russia, Korea and Mongolia; introduced in central Japan. Habitat: freshwater.