collinsae, Parotocinclus Schmidt [R. E.] & Ferraris [C. J., Jr.] 1985:341, Figs. 1-3 [Proceedings of the Biological Society of Washington v. 98 (no. 2); ref. 17274] Essequibo River drainage, tributary to Takutu River, 6°15'N, 59°5'W, Essequibo, Guyana. Holotype: AMNH 55433. Paratypes: AMNH 55434 (4, largest c&s), USNM 265091 (2). Type catalog: Ferraris & Vari 1992:31 [ref. 19771], Ferraris 2007:282 [ref. 29155]. •Valid as Parotocinclus collinsae Schmidt & Ferraris 1985 -- (Garavello 1988:124 [ref. 6853], Burgess 1989:438 [ref. 12860], Schaefer & Provenzano 1993:50 [ref. 20828], Isbrücker 2001:30 [ref. 25653], Ribeiro et al. 2002:223 [ref. 26534], Isbrücker 2002:25 [ref. 27178], Schaefer in Reis et al. 2003:326 [ref. 27061], Gauger & Buckup 2005:517 [ref. 28562], Ferraris 2007:282 [ref. 29155], Lehmann A. & Reis 2012:62 [ref. 32074], Lehmann A. et al. 2013:437 [ref. 32919], Lehmann A. et al. 2014:1 [ref. 33224], Lehmann A. et al. 2015:47 [ref. 33723], Roxo et al. 2016:131 [ref. 34921], Lehmann A. & Reis 2021:452 [ref. 38354], Lehmann A. et al. 2022:74 [ref. 39041]). •Valid as Rhinotocinclus collinsae (Schmidt & Ferraris 1985) -- (Reis & Lehmann A. 2022:57 [ref. 39390], Taphorn et al. 2022:53 [ref. 41297]). Current status: Valid as Rhinotocinclus collinsae (Schmidt & Ferraris 1985). Loricariidae: Hypoptopomatinae. Distribution: South America: Essequibo River basin (Guyana) endemic. Habitat: freshwater.