hasemani, Imparfinis Steindachner [F.] 1915:59 [45], Figs. 1-3 [Denkschriften der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Klasse. v. 93; ref. 4244] Rio Surumú near Serra do Mello; Rio Branco at Bem Querer; Rio Tapajos near Santarém, Pará State, Brazil. Syntypes: (several) NMW 46093 (1). Type catalog: Ferraris 2007:185 [ref. 29155]. On p. 45 of separate; also in Steindachner 1917 [ref. 15259]. Species not listed in earlier abstract [ref. 18909]. •Valid as Imparfinis hasemani Steindachner 1915 -- (Bockmann & Guazzelli in Reis et al. 2003:414 [ref. 27061], Ferraris 2007:185 [ref. 29155], Ortega-Lara et al. 2011:778 [ref. 31716], Castro & Wosiacki 2019:470 [ref. 37139], Taphorn et al. 2022:48 [ref. 41297]). Current status: Valid as Imparfinis hasemani Steindachner 1915. Heptapteridae: Heptapterinae. Distribution: South America: Branco and Tapajós River basins (Brazil and Guyana). Habitat: freshwater.