alternus, Ochmacanthus Myers [G. S.] 1927:129 [Bulletin of the Museum of Comparative Zoology v. 68 (no. 3); ref. 3096] Venezuela. Lectotype: CAS 13522 [ex IU 17697]. Paralectotypes: ANSP 139127 [ex CAS 13523] (2), CAS 13523 [ex IU 17697] (10), MCZ 31578 (3). Type catalog: Böhlke 1984:162 [ref. 13621], Ferraris 2007:409 [ref. 29155]. Lectotype designation not found, not designated here. •Valid as Ochmacanthus alternus Myers 1927 -- (Burgess 1989:324 [ref. 12860], Le Bail et al. 2000:168 [ref. 24549] as cf. alternus, de Pinna & Wosiacki in Reis et al. 2003:276 [ref. 27061], Ferraris 2007:409 [ref. 29155], Sarmiento et al. 2014:192 [ref. 35004], DoNascimiento 2015:947 [ref. 34078], Neto & de Pinna 2016:[8] [ref. 34386], DoNascimiento et al. 2017:71 [ref. 35633], Urbano-Bonilla et al. 2018:78 [ref. 35773], Cortés Hernández et al. 2023:457 [ref. 40760]). Current status: Valid as Ochmacanthus alternus Myers 1927. Trichomycteridae: Stegophilinae. Distribution: South America: Negro and Orinoco River basins (Brazil, Colombia, Bolivia and Venezuela). Habitat: freshwater.