immaculatus, Pseudecheneis Chu [X.-L.] 1982:428, Fig. 1 [Acta Zootaxonomica Sinica v. 7 (no. 4); ref. 5245] Baijixun, upper Lancang River, Weixi County, Yunnan Province, China. Holotype: KIZ 748742. Paratypes: KIZ 748738 (1), KIZ (17). Type catalog: Ferraris 2007:400 [ref. 29155], Du et al. 2013:355 [ref. 32939]. •Valid as Pseudecheneis immaculata Chu 1982 -- (Kottelat 1998:108 [ref. 23436], Wu & Wu 1992:536 [ref. 21205] as immaculatus, Zhu 1995:154 [ref. 25213], Yang in Chen 1998:300 [ref. 23556] as immaculatus, Roberts 1998:290 [ref. 23905] as immaculatus, Chu in Chu et al. 1999:149 [ref. 24534] as immaculatus, Ng & Edds 2005:1 [ref. 28344], Zhou & Zhou 2005:418 [ref. 28435] as immaculatus, Ng 2006:46 [ref. 28737], Ng 2006:66 [ref. 28759], Thomson & Page 2006:60 [ref. 28859], Ng & Tan 2007:25 [ref. 28971] as immaculata, Vishwanath & Darshan 2007:2630 [ref. 28998] as immaculata, Ferraris 2007:400 [ref. 29155] as immaculata, Zhou et al. 2008:113 [ref. 29742] as immaculus, Anganthoibi & Vishwanath 2010:199 [ref. 31042], Kottelat 2013:231 [ref. 32989], Zhang et al. 2016:177 [ref. 34477] as immaculatus). Current status: Valid as Pseudecheneis immaculata Chu 1982. Sisoridae: Glyptosterninae. Distribution: Mekong [Lancangjian] River drainage, China. Habitat: freshwater.