brunneus, Hisonotus Carvalho [T. P.] & Reis [R. E.] 2011:38, Figs. 4g, 8g, 40-41 [Neotropical Ichthyology v. 9 (no. 1); ref. 31240] Cruz Alta, rio Passo Novo, on road from Cruz Alta to Ibirubá, rio Jacuí drainage, 28°38'43"S, 53°33'35"W, Rio Grande do Sul, Brazil. Holotype: MCP 44516. Paratypes: ANSP 188705 (4); MCP 22701 (30, 3 c&s), 41072 (13); MZUSP 104947 (4). •Valid as Hisonotus brunneus Carvalho & Reis 2011 -- (Roxo et al. 2015:137 [ref. 33763], Zawadzki et al. 2016:380 [ref. 34367], Roxo et al. 2016:235 [ref. 34426], Bertaco et al. 2016:418 [ref. 34561], Calegari et al. 2017:243 [ref. 35203], Roxo et al. 2018:[12] [ref. 35900]). Current status: Valid as Hisonotus brunneus Carvalho & Reis 2011. Loricariidae: Hypoptopomatinae. Distribution: Upper rio Jacuí basin, Laguna dos Patos system, Brazil. Habitat: freshwater.