hephaestus, Corydoras Ohara [W. M.], Tencatt [L. F. C.] & Britto [M. R.] 2016:540, Figs. 1-6 [Zootaxa 4170 (no. 3); ref. 34772] Tributary of Igarapé Piracolina, near road BR-364, upper Rio Machado, Rio Madeira basin, Vilhena, Rondônia State, Brazil, 12°48'56"S, 60°06'37"W, elevation 585 meters. Holotype: MZUSP 119087. Paratypes: INPA, MCP, MNRJ, MZUSP, NUP. Type catalog: Oliveira et al. 2022:11 [ref. 39255]. •Valid as Corydoras hephaestus Ohara, Tencatt & Britto 2016 -- (Tencatt et al. 2023:21 [ref. 40180]). •Valid as Osteogaster hephaestus (Ohara, Tencatt & Britto 2016) -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Osteogaster hephaestus (Ohara, Tencatt & Britto 2016). Callichthyidae: Corydoradinae. Distribution: South America: upper Machado River drainage, Madeira River basin, Brazil. Habitat: freshwater.