heterurus, Trygon Bleeker [P.] 1852:67 [Verhandelingen van het Bataviaasch Genootschap van Kunsten en Wetenschappen. v. 24 (art. 12); ref. 333] Jakarta, Java, Indonesia. Syntype: BMNH 1867.11.28.158 (1). •Synonym of Himantura walga (Müller and Henle 1841) -- (Last & Compagno 1999:1493 [ref. 24639], Last el al. 2010:219 [ref. 32461]). •Valid as Brevitrygon heterura (Bleeker 1852) -- (Last et al. 2016:533 [ref. 35010], Psomadakis et al. 2020:204 [ref. 37272], Haque et al. 2021:214 [ref. 38677], Last et al. 2023:37 [ref. 40701]). Current status: Valid as Brevitrygon heterura (Bleeker 1852). Dasyatidae: Urogymninae. Distribution: Eastern Indian Ocean: Indo-Malay Archipelago, western Thailand east to Java (Indonesia), Borneo and Vietnam. Habitat: marine.