macrolepis, Heterocharax Eigenmann [C. H.] 1912:406, Pl. 61 (fig. 2) [Memoirs of the Carnegie Museum v. 5 (no. 1); ref. 1227] Rockstone, Guyana. Holotype: FMNH 53669 [ex CM 2142]. Paratypes: BMNH 1911.10.31.438 (1), CAS 61482 [ex IU 12318] (1), FMNH 53670-71 (1, 1) [ex CM 2143-43] (2). Type catalog: Henn 1928:70 [ref. 12305], Ibarra & Stewart 1987:46 [ref. 12367]. •Valid as Heterocharax macrolepis Eigenmann 1912 -- (Taphorn 1992:236 [ref. 23654], Toledo-Piza 2000:291 [ref. 25072], Lucena & Menezes in Reis et al. 2003:203 [ref. 27061], Mirande 2010:490 [ref. 31006], Barriga Salazar 2014:109 [ref. 35745], Mattox et al. 2014:353 [ref. 33387], DoNascimiento et al. 2017:46 [ref. 35633], Meza-Vargas et al. 2021:15, 18 [ref. 39298], Taphorn et al. 2022:10 [ref. 41297]). Current status: Valid as Heterocharax macrolepis Eigenmann 1912. Acestrorhynchidae: Heterocharacinae. Distribution: South America: Essequibo and Demarara River basins; Amazon River basin and Orinoco River basin (Brazil, Colombia, Ecuador, Guyana, Peru and Venezuela). Habitat: freshwater.