odontocheilus, Microcaelurus Miranda Ribeiro [A. de] 1939:362 [Boletim Biológico, São Paulo (Nova Série) v. 4 (no. 3); ref. 3023] Amazonas. Lectotype: MNRJ 3752 (male). Paralectotype: MNRJ 3752 (1) [female]. Type catalog: Miranda Ribeiro 1955:396 [ref. 12732]. G. Myers in translation at CAS states specimens were from near Parintins, State of Amazonas, Brazil; Miranda-Ribeirio 1953 says Pará, Brazil. Lectotype selected by Weitzman & Fink 1985:108 [ref. 5203]. •Synonym of Tyttocharax madeirae Fowler 1913 -- (Weitzman & Fink 1985:109 [ref. 5203], Weitzman & Burns 1997:144 [ref. 24512], Weitzman in Reis et al. 2003:228 [ref. 27061], Menezes & Camelier 2024:284 [ref. 40817]). Current status: Synonym of Tyttocharax madeirae Fowler 1913. Characidae: Stevardiinae. Habitat: freshwater.