atrianalis, Anostomoides Pellegrin [J.] 1909:346 [5] [Bulletin du Muséum National d'Histoire Naturelle (Série 1) v. 14 (no. 7)[1908]; ref. 3423] Río Orinoco, Venezuela. Lectotype: MNHN 1887-0761. Paralectotypes: MNHN 1887-0798 and 0799 (2). Type catalog: Bertin 1948:32 [ref. 19577]. On p. 5 of separate. Lectotype designated by Assega & Birindelli 2019:132 [ref. 36847]. •Valid as Anostomoides atrianalis Pellegrin 1909 -- (Santos & Jégu 1990:165 [ref. 20180], Garavello & Britski in Reis et al. 2003:72 [ref. 27061], Santos & Zuanon 2006:59 [ref. 28618], Assega & Birindelli 2019:129 [ref. 36847], Silvano et al. 2020:48 [ref. 38133], Meza-Vargas et al. 2021:15 [ref. 39298]). Current status: Valid as Anostomoides atrianalis Pellegrin 1909. Anostomidae. Distribution: South America: Orinoco River basin (Venezuela); Essequibo River basin (Guyana); Amazonas River basin (Bolovia, Brazil, Colombia and Peru). Habitat: freshwater.