nigricauda, Loricaria Regan [C. T.] 1904:275, Pl. 16 (fig. 2) [Transactions of the Zoological Society of London v. 17 (pt 3, no. 1); ref. 3621] Porto Real, Rio de Janeiro state, Brazil. Lectotype: BMNH 1891.6.16.32 (55.4 mm SL). Paralectotypes: BMNH 1891.6.16.33-35 (3). Type catalog: Ferraris 2007:246 [ref. 29155]. Lectotype selected by Isbrücker 1979:113 [ref. 2302]. •Valid as Hemiloricaria nigricauda (Regan 1904) -- (Isbrücker et al. 2001:23 [ref. 25649], Isbrücker 2001:27, 29 [ref. 25653], Isbrücker 2002:17 [ref. 27178], Ferraris 2007:246 [ref. 29155]). •Valid as Rineloricaria nigricauda (Regan 1904) -- (Isbrücker 1980:108 [ref. 2303], Isbrücker 1981:88 [ref. 5522], Burgess 1989:442 [ref. 12860], Britski et al. 1999:130 [ref. 24147], Ferraris in Reis et al. 2003:343 [ref. 27061], Ghazzi 2008:102 [ref. 29636], see DoNascimiento et al. 2017:[18] [ref. 35679], Costa-Silva et al. 2022:290 [ref. 39493], Mejia et al. 2023:17 [ref. 40132]). Current status: Valid as Rineloricaria nigricauda (Regan 1904). Loricariidae: Loricariinae. Distribution: South America: Paraíba do Sul River basin, Rio de Janeiro State, Brazil. Habitat: freshwater.