borellii, Plecostomus Boulenger [G. A.] 1897:2 [Bollettino dei Musei di Zoologia ed Anatomia Comparata della R. Università di Torino v. 12 (no. 279); ref. 14624] Misión de San Francisco, Río Pilcomayo, Bolivia. Syntypes: BMNH 1897.1.27.19 (1); MZUT 1393 (1). Type catalog: Tortonese 1940:137 [ref. 21559], Ferraris 2007:252 [ref. 29155]. Information on type locality see Koerber & Terán 2021:138 [ref. 38314]. •Valid as Hypostomus borellii (Boulenger 1897) -- (Isbrücker 1980:20 [ref. 2303], Burgess 1989:430 [ref. 12860], López & Miquelarena 1991:19 [ref. 23548], Isbrücker 2001:31 [ref. 25653], Isbrücker 2002:18 [ref. 27178], Weber in Reis et al. 2003:356 [ref. 27061], López et al. 2003:50 [ref. 27366], Armbruster 2004:79 [ref. 27644], Menni 2004:81 [ref. 28131], Ferraris 2007:252 [ref. 29155], Zawadzki et al. 2010:719 [ref. 31074], Zawadzki et al. 2014:102 [ref. 33233], Martins et al. 2014:7 [ref. 33617], Sarmiento et al. 2014:191 [ref. 35004], Mirande & Koerber 2015:42 [ref. 35117], Nión et al. 2016:32 [ref. 35565], Zawadzki et al. 2017:570 [ref. 35666], Koerber & Terán 2021:138 [ref. 38314]). Current status: Valid as Hypostomus borellii (Boulenger 1897). Loricariidae: Hypostominae. Distribution: South America: upper and middle Pilcomayo River basin (Argentina, Bolivia and Uruguay). Habitat: freshwater.