hemigrammus, Bryconamericus Pearson [N. E.] 1924:44 [Indiana University Studies v. 11 (no. 64); ref. 3396] Río Popoi, Upper Beni, Bolivia [possibly village Popoy, circa 15°38'24"S, 67°09'56"W]. Syntypes: CAS 39616 [ex IU 17353] (7), UMMZ 66499 (4). •Valid as Bryconacidnus hemigrammus (Pearson 1924) -- (Pavanelli in Reis et al. 2003:115 [ref. 27061], Sarmiento et al. 2014:184 [ref. 35004], Thomaz et al. 2015:Add. 5 [ref. 33893], Netto-Ferreira 2024:115 [ref. 40817]). Current status: Valid as Bryconacidnus hemigrammus (Pearson 1924). Stevardiidae: Diapominae. Distribution: South America: upper Madeira River basin, Bolivia. Habitat: freshwater.