proximus, Melanorivulus Costa [W. J. E. M.] 2018:18, Figs. 1-2 [Zoosystematics and Evolution v. 94 (no. 1); ref. 35717] Stream crossing the road MS-306, Rio Aporé drainage, Rio Paraná Basin, Cassilândia municipality, Mato Grosso do Sul State, Brazil, 19°03'54"S, 51°49'56"W, elevation about 515 meters. Holotype: UFRJ 11681. Paratypes: CICCAA, UFRJ. Plus additional non-type material. •Valid as Melanorivulus proximus Costa 2018 -- (Volcan et al. 2018:275 [ref. 35895]). Current status: Valid as Melanorivulus proximus Costa 2018. Rivulidae: Rivulinae. Distribution: South America: upper Rio Paraná basin, central Brazilian Cerrado, Brazil. Habitat: freshwater.