macanuda, Scleronema Ferrer [J.] & Malabarba [L. R.] 2020:21, Figs. 1A, 9, 10A, 11 [Neotropical Ichthyology v. 18 (no. 2): e190081; ref. 37587] Irrigation water channel draining to arroio Velhaco, laguna dos Patos system, Sentinela do Sul, Rio Grande do Sul State, Brazil, 30°43'13"S, 51°39'28"W. Holotype: MCN 20230. Paratypes: LIRP, MCN, MCP, UFRGS, ZVC. Plus additional non-type material. •Valid as Scleronema macanuda Ferrer & Malabarba 2020 -- (Terán et al. 2020:44 [ref. 38045], Ferrer 2021:240 [ref. 38890], Koerber et al. 2021:5 [ref. 38894], Costa et al. 2022:94 [ref. 39059], Koerber et al. 2023:6 [ref. 40355], Koerber et al. 2023:2 [ref. 40368], Loureiro et al. 2023:88 [ref. 40506]). Current status: Valid as Scleronema macanuda Ferrer & Malabarba 2020. Trichomycteridae: Trichomycterinae. Distribution: South America: small Atlantic coastal drainages (southeastern Brazil), and lower Uruguay River basin (Uruguay and Argentina). Habitat: freshwater.