longirostris, Parotocinclus Garavello [J. C.] 1988:120, Fig. 2 [Naturalia (São Paulo) v. 13; ref. 6853] Rio Preto da Eva, Manaus-Itacoatiara highway, kilometer 80, Manaus, Amazonas, Brazil. Holotype: MZUSP 36891. Paratypes: MZUSP 36892-94 (3), 36895-98 (4). Type catalog: Ferraris 2007:282-283 [ref. 29155] •Valid as Parotocinclus longirostris Garavello 1988 -- (Schaefer & Provenzano 1993:50 [ref. 20828], Burgess & Finley 1996:170 [ref. 22901], Isbrücker 2001:31 [ref. 25653], Ribeiro et al. 2002:223 [ref. 26534], Isbrücker 2002:25 [ref. 27178], Schaefer in Reis et al. 2003:326 [ref. 27061], Ferraris 2007:282 [ref. 29155], Lehmann A. & Reis 2012:62 [ref. 32074], Lehmann A. et al. 2014:32 [ref. 33225], Lehmann A. et al. 2015:47 [ref. 33723], Roxo et al. 2016:131 [ref. 34921], Roxo et al. 2017:267 [ref. 35139], Lehmann A. et al. 2018:590 [ref. 36321], Roxo et al. 2019:354 [ref. 36855], Silva-Junior et al. 2020:12 [ref. 37598], Lehmann A. & Reis 2021:452 [ref. 38354]). •Valid as Rhinotocinclus longirostris (Garavello 1988) -- (Reis & Lehmann A. 2022:28 [ref. 39390]). Current status: Valid as Rhinotocinclus longirostris (Garavello 1988). Loricariidae: Hypoptopomatinae. Distribution: South America: central Amazon River basin, Brazil. Habitat: freshwater.