ferreirai, Cetopsidium Vari [R. P.], Ferraris [C. J., Jr.] & de Pinna [M. C. C.] 2005:133, Fig. 1 [Neotropical Ichthyology v. 3 (no. 2); ref. 28270] Last cachoeira before rio Trombetas, about 1°05'S, 57°01'W, rio Mapuera, rio Trombetas basin, Pará State, Brazil. Holotype: INPA 10194. Paratypes: INPA 6501 (3), 10193 (3). Type catalog: Ferraris 2007:130 [ref. 29155]. •Valid as Cetopsidium ferreirai Vari, Ferraris & de Pinna 2005 -- (de Pinna et al. 2007:802 [ref. 29247], Ferraris 2007:130 [ref. 29155], Vari & Ferraris 2009:290 [ref. 30494]). Current status: Valid as Cetopsidium ferreirai Vari, Ferraris & de Pinna 2005. Cetopsidae: Cetopsinae. Distribution: Trombetas River basin, Brazil. Habitat: freshwater.