hemiurus, Plecostomus Eigenmann [C. H.] 1912:224, Fig. 34, Pl. 25 (fig. 1) [Memoirs of the Carnegie Museum v. 5 (no. 1); ref. 1227] Amatuk, Guyana. Holotype: FMNH 53110 [ex CM 1544]. Paratypes: FMNH 53111 [ex CM 1545a; IU 11963] (4), BMNH 1911.10.31.113 (1), CAS 77341 [ex IU 11963] (2). Additional original material: CAS 77337 [ex IU 11965] (1), 77338-40 [ex IU 11964, -66-67] (1, 1, 1); FMNH 53112-16 [ex CM 1546-1550] (5, 1, 1, 1, 1), 53149 [ex CM 1586] (1); MCZ 30052 [ex CM 1547] (1). Type catalog: Henn 1928:85 [ref. 12305], Ibarra & Stewart 1987:67 [ref. 12367], Ferraris 2007:254 [ref. 29155]. Appeared first as name only in Eigenmann 1910:407 [ref. 1224]. Ibarra & Stewart list 10 paratypes from 6 localities at FMNH, but some are not types but additional original material. •Valid as Hypostomus hemiurus (Eigenmann 1912) -- (Isbrücker 1980:24 [ref. 2303], Burgess 1989:431 [ref. 12860], Isbrücker 2001:28, 31 [ref. 25653], Isbrücker 2002:19 [ref. 27178], Weber in Reis et al. 2003:358 [ref. 27061], Armbruster 2004:79 [ref. 27644], Ferraris 2007:254 [ref. 29155], Zawadzki et al. 2015:56 [ref. 33866], Zawadzki et al. 2017:571 [ref. 35666], Taphorn et al. 2022:51 [ref. 41297]). Current status: Valid as Hypostomus hemiurus (Eigenmann 1912). Loricariidae: Hypostominae. Distribution: South America: coastal drainages (Guyana) endemic. Habitat: freshwater.