duseni, Hemipsilichthys Miranda Ribeiro [A. de] 1907:187, Fig. [Boletim Sociedade Nacional Agricultura, Rio de Janeiro [Lavoura] v. 11 (no. 5); ref. 17767] Ribeirão do Monjolinho, Iporanga, São Paulo, Brazil. Lectotype: MNRJ 772. Paralectotypes: (1) whereabouts unknown. Type catalog: Miranda Ribeiro 1955:400 [ref. 12732], Ferraris 2007:262 [ref. 29155] Lectotype selected by Gosline 1947:102 [ref. 1857]. •Valid as Pareiorhaphis duseni (Miranda Ribeiro 1907) -- (Isbrücker 1980:13 [ref. 2303], Burgess 1989:430 [ref. 12860]). •Valid as Isbrueckerichthys duseni (Miranda Ribeiro 1907) -- (Derijst 1996:64 [ref. 22356], Montoya-Burgos et al. 1998:367 [ref. 23850], Isbrücker 2001:28 [ref. 25653], Pereira & Reis 2002:141 [ref. 26071], Isbrücker 2002:20 [ref. 27178], Weber in Reis et al. 2003:364 [ref. 27061], Pereira & Oyakawa 2003:7 [ref. 27318], Jerep et al. 2006:55 [ref. 28877], Ferraris 2007:262 [ref. 29155], Chiachio et al. 2008:610 [ref. 30127], Roxo et al. 2012:38 [ref. 32073], Pereira & Reis 2017:72 [ref. 35307], Reis et al. 2020:468 [ref. 38364]). Current status: Valid as Isbrueckerichthys duseni (Miranda Ribeiro 1907). Loricariidae: Hypoptopomatinae. Distribution: South America: upper Ribeira de Iguapé River in Paraná state (Brazil). Habitat: freshwater.