rhabdostigma, Megalonema Fowler [H. W.] 1914:256, Fig. 10 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 66; ref. 1390] Rupununi River, Guyana, 2°-3°N, 50°20'W. Holotype (unique): ANSP 39338. Type catalog: Böhlke 1984:142 [ref. 13621], Ferraris 2007:338 [ref. 29155]. •Synonym of Pimelodus ornatus Kner 1858 -- (Lundberg & Littmann in Reis et al. 2003:440 [ref. 27061], Ferraris 2007:338 [ref. 29155], Mirande & Koerber 2015:32 [ref. 35117], Koerber et al. 2017:49 [ref. 35267], Grant 2021:90 [ref. 38702]). Current status: Synonym of Pimelodus ornatus Kner 1858. Pimelodidae. Habitat: freshwater.