gymnogaster, Homaloptera Bleeker [P.] 1853:163 [Natuurkundig Tijdschrift voor Nederlandsch Indië v. 4 (no. 1); ref. 16903] Lake Meninju, Sumatra, Indonesia. Holotype (unique): BMNH 1866.5.2.49 (poor condition). Bleeker specimens: AMS B.7513 (1). Type catalog: Alfred 1961:35 [ref. 20552]. •Valid as Homaloptera gymnogaster Bleeker 1853 -- (Kottelat et al. 1993:52 [ref. 23448], Doi 1997:18 [ref. 22832], Kottelat 1998:271 [ref. 23656], Tan & Kottelat 2009:52 [ref. 30261], Ott 2009:83 [ref. 31048]). •Valid as Homalopterula gymnogaster (Bleeker 1953) -- (Kottelat 2012:52 [ref. 32367], Kottelat 2013:189 [ref. 32989], Randall & Page 2015:71 [ref. 33701]). Current status: Valid as Homalopterula gymnogaster (Bleeker 1853). Balitoridae. Distribution: Sumatra, Indonesia. Habitat: freshwater.