Otothyropsis Ribeiro [A. C.], Carvalho [M.] & Melo [A. L. A.] 2005:491 Masc. Otothyropsis marapoama Ribeiro, Carvalho & Melo 2005. Type by original designation (also monotypic). •Valid as Otothyropsis Ribeiro, Carvalho & Melo 2005 -- (Ferraris 2007:276 [ref. 29155], Calegari et al. 2011:255 [ref. 31384], Calegari et al. 2013:130 [ref. 32493], Lippert et al. 2014:238 [ref. 33355], Calegari et al. 2017:231 [ref. 35203]). •Synonym of Hisonotus Eigenmann & Eigenmann 1889 -- (Roxo et al. 2019:161 [ref. 36538]). Current status: Valid as Otothyropsis Ribeiro, Carvalho & Melo 2005. Loricariidae: Hypoptopomatinae.