marapoama, Otothyropsis Ribeiro [A. C.], Carvalho [M.] & Melo [A. L. A.] 2005:491, Figs. 1, 3-6, 7b, 8-9 [Neotropical Ichthyology v. 3 (no. 4); ref. 28566] Rio Tietê basin, Município de Marapoama, ribeirão Cubatão, road beween Marapoama and Elisiário, 21°11'35"S, 49°07'22"W, São Paulo, Brazil. Holotype: LIRP 5640. Paratypes: DZSJEP 7887 (8); LIRP 4621 (3, 1 c&s), 5641 (20. 4 c&s, 4 stained); MCP 39303 (10); MZUSP 87892 (1), 87893 (10). Type catalog: Ferraris 2007:276 [ref. 29155], Andrade et al. 2017:455 [ref. 35588].. •Valid as Otothyropsis marapoama Ribeiro, Carvalho & Melo 2005 -- (Ferraris 2007:276 [ref. 29155], Chiachio et al. 2008:610 [ref. 30127], Calegari et al. 2011:253 [ref. 31384], Caliegari et al. 2012:131 [ref. 32493], Rosa et al. 2014:59 [ref. 33228], Lippert et al. 2014:243 [ref. 33355], Roxo et al. 2017:267 [ref. 35139], Calegari et al. 2017:244 [ref. 35203], Roxo et al. 2017:351 [ref. 35310]). •Valid as Hisonotus marapoama (Ribeiro, Carvalho & Melo 2005) -- (Roxo et al. 2019:160 [ref. 36538]). Current status: Valid as Otothyropsis marapoama Ribeiro, Carvalho & Melo 2005. Loricariidae: Hypoptopomatinae. Distribution: Tietê River, Paraná River basin, southeastern Brazil. Habitat: freshwater.