piperata, Tympanopleura Eigenmann [C. H.] 1912:203, Pl. 20 (fig. 3) [Memoirs of the Carnegie Museum v. 5 (no. 1); ref. 1227] Crab Falls, Essequibo River, Guyana. Holotype: FMNH 53243 [ex CM 1708]. Paratypes: (7) BMNH 1911.10.31.102 (1), CAS 58382 [IU 12090] (3), FMNH 53244 (1), MCZ 30189 [ex CM] (1). Type catalog: Henn 1928:75 [ref. 12305], Ibarra & Stewart 1987:84 [ref. 12367], Ferraris 2007:70 [ref. 29155]. •Valid as Ageneiosus piperatus (Eigenmann 1912) -- (see Burgess & Finley 1996:167 [ref. 22901], Ferraris in Reis et al. 2003:472 [ref. 27061], Ferraris 2007:70 [ref. 29155], Ribeiro & Rapp Py-Daniel 2010:103 [ref. 30759]). •Valid as Tympanopleura piperata Eigenmann 1912 -- (Burgess 1989:286 [ref. 12860], Walsh et al. 2014:33 [ref. 33781], DoNascimiento et al. 2017:86 [ref. 35633], Calegari et al. 2019:[98] [ref. 36961], Hashimoto et al. 2020:[3] 16 [ref. 37940], Meza-Vargas et al. 2021:23 [ref. 39298]). Current status: Valid as Tympanopleura piperata Eigenmann 1912. Auchenipteridae: Auchenipterinae. Distribution: South America: Amazon River basin (Brazil, Colombia and Peru) and Guyana. Habitat: freshwater.