rex, Sternarchella Evans [K. M.], Crampton [W. G. R.] & Albert [J. S.] 2017:10, Figs. 11, 12a [Neotropical Ichthyology v. 15 (no. 2) e160168; ref. 35357] Mamirauá Lake system, Paraná Maiana station A, Tefé, Brazil, 03°06'44"S, 64°47'32"W. Holotype: MCP 49422. Paratypes: INPA, MCP, ZUEC. Plus non-type material. •Valid as Sternarchella rex Evans, Crampton & Albert 2017 -- (Meza-Vargas et al. 2021:21 [ref. 39298]). Current status: Valid as Sternarchella rex Evans, Crampton & Albert 2017. Apteronotidae: Apteronotinae. Distribution: South America: Amazon River basin (Brazil and Peru). Habitat: freshwater.