polyodon, Otothyropsis Calegari [B. B.], Lehmann A. [P.] & Reis [R. E.] 2013:133, Figs. 3A-B, 4 [Zootaxa 3619 (no. 2); ref. 32493] Água Clara, ribeirão Tamanduá, tributary to rio Verde, near São Domingos Hydroeletric Plant, upper rio Paraná basin, 20°04’03"N, 53°11’21"W, Mato Grosso dul Sul, Brazil. Holotype: MCP 47139. Paratypes: AMNH 257002 (3); MCP 47076 (12), 45756 (5); MNRJ 40122 (3) •Valid as Otothyropsis polyodon Calegari, Lehmann A. & Reis 2013 -- (Lippert et al. 2014:243 [ref. 33355], Calegari et al. 2017:244 [ref. 35203], Reis et al. 2020:469 [ref. 38364]). Current status: Valid as Otothyropsis polyodon Calegari, Lehmann A. & Reis 2013. Loricariidae: Hypoptopomatinae. Distribution: South America: Rio Paraná Basin (Brazil). Habitat: freshwater.