Description of a new species of Moenkhausia (Characiformes: Characidae) from the tipper Paraguay basin, Central Brazil, with comments on its phylogenetic relationships
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Soc Brasileira Ictiologia
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Resumo
A new species of Moenkhausia is described from tributaries of the upper rio Sepotuba, Paraguay basin, Brazil. The new species is distinguished from its congeners by a combination of characters, including an inconspicuous oval-shaped vertically elongated humeral blotch, extending horizontally from third through five lateral-line scales, and vertically from third row above lateral line to first row below it. followed by a diffuse field of dark chromatophores in the flank, combined with a well-defined dark line at the base of the anal fin. Furthermore, the phylogenetic position of the new species is presented based on molecular data, showing a close relationship among species of Moenkhausia and Hemigrammus that have a well-defined dark line at the base of the anal fin. Until this moment, this species is only known from in the upper rio Sepotuba basin.
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Hemigrammus, Molecular phylogeny, Neotropical tetras, Taxonomy
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Inglês
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Neotropical Ichthyology. Sao Paulo: Soc Brasileira Ictiologia, v. 16, n. 2, 11 p., 2018.
