itacua, Hypostomus Valenciennes [A.] 1836:Pl. 7 (fig. 1) [Voyage dans l'Amérique méridionale; ref. 20720] Affluents of the Rio de la Plata. No types known. Type information: Isbrücker 1980:50 [ref. 2303] but there would be a unique holotype (figured specimen), not syntypes, Ferraris 2007:217 [ref. 29155]. Name available from plate, description in Valenciennes 1847:8 [ref. 5010]. See also Valenciennes in Cuvier & Valenciennes 1840:505 [ref. 1008]. See Weber in Reis et al. 2003:351 [ref. 27061]. Pl. 7 was published in 1836. •Species incertae sedis in Loricariidae, subfamily Hypostominae -- (Weber in Reis et al. 2003:351 [ref. 27061]). •Valid as Hemiancistrus itacua (Valenciennes 1836) -- (Isbrücker 1980:50 [ref. 2303], Burgess 1989:434 [ref. 12860], Cardoso & Malabarba 1999:156 [ref. 24148], Isbrücker 2001:27, 28 [ref. 25653], Isbrücker 2002:17 [ref. 27178], Cardoso & Lucinda 2003:74 [ref. 26858], Armbruster 2004:79 [ref. 27644]). •Incertae sedis in Loricariidae -- (Ferraris 2007:217 [ref. 29155]). •Valid as Hypostomus itacua Valenciennes 1836 incertae sedis -- (Armbruster et al. 2015:100 [ref. 33670], Koerber 2014:9 [ref. 33621], Mirande & Koerber 2015:42 [ref. 35117]). Current status: Valid as Hypostomus itacua Valenciennes 1836. Loricariidae: Hypostominae. Distribution: Middle Paraná River basin: Argentina, Brazil (?) and Paraguay (?). Habitat: freshwater.