migrans, Pygidium Dahl [G.] 1960:309, Fig. 3 [Novedades Colombianas v. 1 (no. 5); ref. 5836] Río Guayabero, Orinoco System, Colombia. Holotype: ICNMHN 399. Paratypes: (possibly more than a thousand) ICNMHN 400 (683, not 1384). Type catalog: Cala 1981:4-5 [ref. 23525], Ferraris 2007:420 [ref. 29155], Mojica & Agudelo-Zamora 2018:36 [ref. 36127]. •Valid as Trichomycterus migrans (Dahl 1960) -- (de Pinna 1998:297 [ref. 23847], de Pinna & Wosiacki in Reis et al. 2003:282 [ref. 27061], Ferraris 2007:420 [ref. 29155], DoNascimiento et al. 2017:70 [ref. 35633], Urbano-Bonilla et al. 2018:77 [ref. 35773]). Current status: Valid as Trichomycterus migrans (Dahl 1960). Trichomycteridae: Trichomycterinae. Distribution: Guayabero River, Orinoco River basin, Colombia. Habitat: freshwater.