hasemani, Otocinclus Steindachner [F.] 1915:348 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Klasse v. 52 (no. 27); ref. 20500] Rio Parnaiba basin, Engenhão de Agua, about 4°52'S, 43°10'W, Maranhão State, Brazil. Lectotype: 45369:1 (largest). Paralectotypes: NMW 45369:2-20 (21). Type catalog: Ferraris 2007:274 [ref. 29155]. Species described in more detail in Steindachner 1915:578 [ref. 15070]. Lectotype selected by Schaefer 1997:62 [ref. 23213]. •Valid as Otocinclus hasemani Steindachner 1915 -- (Isbrücker 1980:83 [ref. 2303], Burgess 1989:438 [ref. 12860], Schaefer 1997:60 [ref. 23213], Isbrücker 2001:30 [ref. 25653], Britto & Moreira 2002:1067 [ref. 26512], Isbrücker 2002:24 [ref. 27178], Schaefer in Reis et al. 2003:324 [ref. 27061], Ferraris 2007:274 [ref. 29155], Ramos et al. 2014:4 [ref. 35321], Delapieve et al. 2018:23 [ref. 35713], Koerber et al. 2022:51 [ref. 39235]). Current status: Valid as Otocinclus hasemani Steindachner 1915. Loricariidae: Hypoptopomatinae. Distribution: South America: Tocantins and Parnaíba River basins (northeastern Brazil). Habitat: freshwater.