guianense, Hypoptopoma Boeseman [M.] 1974:259, Fig. 1; Pl. 1 [Proceedings of the Koninklijke Nederlandse Akademie van Wetenschappen (Series C, Biological and Medical Sciences) v. 77 (no. 3); ref. 7490] Left tributary of Nickerie River, a few kilometers upstream from Stonedansi Falls, Suriname. Holotype: RMNH 26919. Paratypes: MZUSP (1); RMNH 26920 (orig. 12, now 8), 26921-22 (2, 4); USNM 213484 [ex RMNH 26920] (2); ZMA 106591 (9). Non-types: USNM 102224 (2). Type catalog: Nijssen et al. 1982:54 [ref. 19236], Ferraris & Vari 1992:27 [ref. 19771], Ferraris 2007:250 [ref. 29155]. •Valid as Hypoptopoma guianense Boeseman 1974 -- (Isbrücker 1980:87 [ref. 2303], Burgess 1989:439 [ref. 12860], Isbrücker 2001:28 [ref. 25653], Isbrücker 2002:18 [ref. 27178], Schaefer in Reis et al. 2003:323 [ref. 27061], Ferraris 2007:250 [ref. 29155], Aquino & Schaefer 2010:28 [ref. 30875], Aquino & Sabaj Pérez 2016:139 [ref. 34526], Delapieve et al. 2018:22 [ref. 35713], Taphorn et al. 2022:51 [ref. 41297]). Current status: Valid as Hypoptopoma guianense Boeseman 1974. Loricariidae: Hypoptopomatinae. Distribution: South America: Essequibo River, (Guyana) and Nickerie River (Suriname). Habitat: freshwater.