huambonicus, Tetragonopterus Steindachner [F.] 1882:177 [Anzeiger der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftlichen Klasse v. 19 (no. 19); ref. 20487] Callacate and River Huambo, Peru. Syntypes: NMW 57530 (2), 57531 (1). Species later illustrated and described in more detail in Steindachner 1882:25, Pl. 5 (fig. 1) [ref. 14353]. •Valid as Hemibrycon huambonicus (Steindachner 1882) -- (Ortega & Vari 1986:8 [ref. 9708], Malabarba in Reis et al. 2003:130 [ref. 27061], Bertaco et al. 2007:256 [ref. 29278], Román-Valencia et al. 2007:181 [ref. 29496], Román-Valencia et al. 2010:101 [ref. 30945], Bertaco & Malabarba 2010:743 [ref. 31076], Sarmiento et al. 2014:184 [ref. 35004], Thomaz et al. 2015:App. 5 [ref. 33893], Meza-Vargas et al. 2021:18 [ref. 39298], Ruiz-C. et al. 2023:230 [ref. 40482]). Current status: Valid as Hemibrycon huambonicus (Steindachner 1882). Characidae: Stevardiinae. Distribution: South America: Huambo River drainage, Pacific versant of Peru. Habitat: freshwater.