tocantinensis, Hemiodus Langeani [F.] 1999:719, Fig. 1 [Copeia 1999 (no. 3); ref. 23914] Tributary stream of ribeirao Lajeadinho, below "cuesta," rio Araguaia, Alto Araguaia, Mato Grosso, Brazil. Holotype: MZUSP 52628. Paratypes: MZUSP 21307 (2), 21315 (17), 21325 (2), 29648 (11), 29650-51 (5, 1), 41478 (1); USNM 268085 (6). •Valid as Hemiodus tocantinensis Langeani 1999 -- (Langeani in Reis et al. 2003:99 [ref. 27061], Beltrão & Zuanon 2012:255 [ref. 32032], Langeani & Moreira 2013:1261 [ref. 32535], Nogueira et al. 2020:[5] [ref. 38050], Silva et al. 2020:179 [ref. 37389]). Current status: Valid as Hemiodus tocantinensis Langeani 1999. Hemiodontidae. Distribution: South America: Araguaia River and lower Tocantins River basins (Brazil). Habitat: freshwater.