nigricauda, Pseudopimelodus Mees [G. F.] 1974:218, Figs. 37d, 38d; Pls. 11-12 [Zoologische Verhandelingen (Leiden) No. 132; ref. 2969] Sipaliwini, Suriname. Holotype: RMNH 26739. Paratypes: RMNH 26736-38 (1, 1, 2), 26740-43 (1, 1, 1, 2); ZMA 105948-49 (1, 1), 105951 (1). Type catalog: Nijssen et al. 1982:61 [ref. 19236], Ferraris 2007:353 [ref. 29155]. The spelling nigricauda is a noun [black tail] and should not be declined. •Valid as Pseudopimelodus nigricauda Mees 1974 -- (Burgess 1989:276 [ref. 12860], Grant 1999:49 [ref. 24295] as nigricaudus, Le Bail et al. 2000:112 [ref. 24549]). •Valid as Cephalosilurus nigricaudus (Mees 1974) -- (Shibatta in Reis et al. 2003:402 [ref. 27061], Ferraris 2007:353 [ref. 29155], Grant 2021:193 [ref. 38702]). •Valid as Lophiosilurus nigricaudus (Mees 1974) -- (Shibatta et al. 2021:3 [ref. 38931]). •Valid as Lophiosilurus nigricauda (Mees 1974). Current status: Valid as Lophiosilurus nigricauda (Mees 1974). Pseudopimelodidae: Batrochoglaninae. Distribution: South America: Sipaliwini River basin (Suriname). Habitat: freshwater.