cirrhosus, Hypostomus Valenciennes [A.] 1836:Pl. 7 (fig. 3) [Voyage dans l'Amérique méridionale; ref. 20720] No locality. Non-types (possibly incl. holotype): MNHN 0000-4845 (4), A-9565 (2), and B-0603 (1). Type catalog: Bertin & Estève 1950:68 [ref. 19575] as syntypes; technically the figured specimen is the unique holotype if identifiable, Ferraris 2007:220 [ref. 29155]. Name available from plate as above, description in Valenciennes 1847:8 [ref. 5010]. Pl. 7 was published in 1836. See also Valenciennes in Cuvier & Valenciennes 1840:511 [ref. 1008]. A lectotype (MNHN 4845, 86.8 mm SL) was selected by Isbrücker 1980:67 [ref. 2303] but that has no standing. •Valid as Ancistrus cirrhosus (Valenciennes 1836) -- (Ovchynnyk 1967:38 [ref. 37559], Isbrücker 1980:67-68 [ref. 2303], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:436 [ref. 12860], Gómez & Chebez 1996:65 [ref. 23791], Montoya-Burgos et al. 1998:367 [ref. 23850], Knaack 1999:152 [ref. 23874], Britski et al. 1999:134 [ref. 24147], Isbrücker 2001:25, 28 [ref. 25653], Miquelarena et al. 2002:78 [ref. 26517], Isbrücker 2002:12 [ref. 27178], Fisch-Muller in Reis et al. 2003:374 [ref. 27061], López et al. 2003:53 [ref. 27366] dating to 1840, Menni 2004:81 [ref. 28131], Ferraris 2007:220 [ref. 29155], Chiachio et al. 2008:610 [ref. 30127], Bifi et al. 2009:41 [ref. 30541], Litz & Koerber 2014:25 [ref. 33622], Sarmiento et al. 2014:161, 191 [ref. 35004], Mirande & Koerber 2015:41 [ref. 35117], Nión et al. 2016:32 [ref. 35565] dated 1840, Reis et al. 2020:466 [ref. 38364] as cf. cirrhosus). Current status: Valid as Ancistrus cirrhosus (Valenciennes 1836). Loricariidae: Hypostominae. Distribution: South America: Paraná River basin (Bolivia, Argentina and Uruguay). Habitat: freshwater.