sima, Sternarchella Starks [E. C.] 1913:22, Pl. 4 [Leland Stanford Jr. University Publications, University Series; ref. 4197] Pará, Brazil. Holotype: CAS-SU 22220 (1 of 3). Paratypes: AMNH 3864 (1), CAS-SU 22220 (2 of 3). Type catalog: Böhlke 1953:27 [ref. 12291] as simus, Ferraris et al. 2017:[11] [ref. 35236]. Type designated in Pl. 4. •Valid as Sternarchella sima Starks 1913 -- (Mago-Leccia 1994:34 [ref. 21320], Albert & Campos-da-Paz 1998:432 [ref. 23853], Albert 2001:111 [ref. 25614], Albert in Reis et al. 2003:500 [ref. 27061], Lundberg et al. 2013:158 [ref. 32552], Ivanyisky & Albert 2014:572 [ref. 35449], Ferraris et al. 2017:[11] [ref. 35236], Evans et al. 2017:26 [ref. 35357], see DoNascimiento et al. 2017:[15] [ref. 35679], Bernt et al. 2018:474 [ref. 35797], Meza-Vargas et al. 2021:21 [ref. 39298]). Current status: Valid as Sternarchella sima Starks 1913. Apteronotidae: Apteronotinae. Distribution: South America: Amazon River basin (Brazil and Peru). Habitat: freshwater.