69140 Scleronema macanuda Ferrer & Malabarba, 2020 Trichomycteridae Pencil or parasitic catfishes Trichomycterinae Siluriformes Teleostei South America: widely distributed in rivers and streams that drain to laguna dos Patos (Brazil) and lagoa Mirim (Brazil and Uruguay); and in small Atlantic coastal drainages of Uruguay.