Species that contain: Neostethus and lankesteri [ 2 ] records

lankesteri, Neostethus Regan [C. T.] 1916:2, Pl. 1b, 2, 3a, 4c; Fig. 1-10, 12b [Proceedings of the Zoological Society of London 1916 (pt 1); ref. 3667] Mouth of Muar River at Banda Maharani, Johor, Malaysia. Lectotype: BMNH 1937.12.9.7. Paralectotypes: (5) BMNH 1937.12.9.8-10 (3). Lectotype selected by Parenti 1989:269 [ref. 13486]. •Valid as Neostethus lankesteri Regan 1916 -- (Parenti 1989:269 [ref. 13486], Kottelat et al. 1993:95 [ref. 23448], Kottelat & Lim 1996:244 [ref. 23210], Parenti & Louie 1998:142 [ref. 23544], Parenti 1999:2148 [ref. 24784], Parenti in Randall & Lim 2000:599 [ref. 25122], Tan & Lim 2004:110 [ref. 27716], Shibukawa 2009:45 [ref. 30449], Shibukawa et al. 2012:44 [ref. 32037], Kunlapapuk et al. 2012:119 [ref. 32192], Kottelat 2013:285 [ref. 32989], Parenti 2014:178 [ref. 33268], Taki et al. 2021:321 [ref. 39830]). Current status: Valid as Neostethus lankesteri Regan 1916. Phallostethidae. Distribution: Southeast Asia: Malaysia to lower Mekong River basin, Vietnam. Habitat: freshwater, brackish.

siamensis, Neostethus Myers [G. S.] 1937:139 [Proceedings of the United States National Museum v. 84 (no. 3007); ref. 3115] Estuary of the Chantabun River, southeastern Thailand. Holotype (unique): USNM 102140. •Synonym of Neostethus lankesteri Regan 1916 -- (Parenti 1989:269 [ref. 13486], Shibukawa et al. 2012:44 [ref. 32037], Kunlapapuk et al. 2012:119 [ref. 32192], Kottelat 2013:285 [ref. 32989]). Current status: Synonym of Neostethus lankesteri Regan 1916. Phallostethidae. Habitat: freshwater, brackish.