rachovii, Plecostomus Regan [C. T.] 1913:555 [Annals and Magazine of Natural History (Series 8) v. 12 (no. 72); ref. 18903] Near Rio de Janeiro, Brazil. Holotype (unique): BMNH 1913.10.30.15. Type catalog: Ferraris 2007:255 [ref. 29155]. •Valid as Hypostomus rachovii (Regan 1913) -- (Isbrücker 1980:32 [ref. 2303], Burgess 1989:432 [ref. 12860], Isbrücker 2001:28, 31 [ref. 25653], Isbrücker 2002:19 [ref. 27178], Armbruster 2004:80 [ref. 27644]). •Synonym of Hypostomus laplatae (Eigenmann 1907) -- (Weber in Reis et al. 2003:359 [ref. 27061], Ferraris 2007:255 [ref. 29155], Litz & Koerber 2014:25 [ref. 33622], Mirande & Koerber 2015:42 [ref. 35117]). •Possibly a synonym of Hypostomus punctatus Valenciennes 1840 -- (Cardoso et al. 2019:[18] [ref. 36685]). Current status: Synonym of Hypostomus punctatus Valenciennes 1840. Loricariidae: Hypostominae. Habitat: freshwater.