kaitukaensis, Megadontognathus Campos-da-Paz [R.] 1999:1043, Figs. 1-2 [Copeia 1999 (no. 4); ref. 24190] Cachoeiras de Kaituká (="Caitucá"), about 5°15'S, 52°50'W, Rio Xingu, Pará State, Brazil. Holotype: INPA 14074. Paratypes: INPA 3936 (4, 1 c&s, broken tail), MNRJ 17090 (1, regenerated tail), MZUSP 52901 (1). Type catalog: Ferraris et al. 2017:[9] [ref. 35236]. •Valid as Megadontognathus kaitukaensis Campos-da-Paz 1999 -- (Albert in Reis et al. 2003:499 [ref. 27061], Ferraris et al. 2017:[9] [ref. 35236], Bernt et al. 2018:473 [ref. 35797]). Current status: Valid as Megadontognathus kaitukaensis Campos-da-Paz 1999. Apteronotidae: Apteronotinae. Distribution: Xingu River basin, Pará, Brazil. Habitat: freshwater.