pusarum, Plecostomus Starks [E. C.] 1913:36, Pl. 6 [Leland Stanford Jr. University Publications, University Series; ref. 4197] Ceará-Mirim River, Rio Grande do Norte, Brazil. Holotype: CAS-SU 22225. Paratypes: (numerous) CAS-SU 22221 (31). Type catalog: Böhlke 1953:46 [ref. 12291], Ferraris 2007:259 [ref. 29155]. •Valid as Hypostomus pusarum (Starks 1913) -- (Isbrücker 1980:32 [ref. 2303], Burgess 1989:432 [ref. 12860], Isbrücker 2001:28, 30 [ref. 25653], Isbrücker 2002:19 [ref. 27178], Britski & Garavello 2002:287 [ref. 26540], Weber in Reis et al. 2003:362 [ref. 27061], Armbruster 2004:80 [ref. 27644], Ferraris 2007:259 [ref. 29155], Zanata et al. 2013:247 [ref. 32751], Zanata & Pitanga 2016:231 [ref. 34535], Zawadzki et al. 2017:12 [ref. 35355], Ramos et al. 2017:8 [ref. 35396], Zawadzki et al. 2017:571 [ref. 35666], Costa et al. 2017:45 [ref. 35684], Lustosa-Costa et al. 2022:16 [ref. 39190], Oliveira et al. 2022:346 [ref. 39824], Lustosa-Costa et al. 2024:5 [ref. 41308]). Current status: Valid as Hypostomus pusarum (Starks 1913). Loricariidae: Hypostominae. Distribution: South America: Parnaíba and São Francisco River basins and coastal drainages, Northeastern Caatinga and Coastal Drainages Ecoregion, northeastern Brazil. Habitat: freshwater.