A new species of Hyphessobrycon (Characiformes,Characidae) from the upper Rio Jequitinhonha basin,Minas Gerais,Brazil, with comments on morphological similarities with Stethaprioninae species from headwater environments |
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| Authors: | Tulio F Teixeira Guilherme M Dutra Iago S Penido Sérgio A dos Santos Tiago C Pessali |
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| Institution: | 1. Pontifícia Universidade Católica de Minas Gerais, Programa de Pós-graduação em Biologia de Vertebrados, Belo Horizonte, MG, Brazil;2. Museu de Zoologia da Universidade de São Paulo, São Paulo, SP, Brazil;3. Universidade Estadual de Maringá, Programa de Pós-graduação em Biologia Comparada, Maringá, PR, Brazil;4. Museu Nacional, Universidade Federal do Rio de Janeiro, Programa de Pós-graduação em Zoologia, Rio de Janeiro, RJ, Brazil;5. Museu de Ciências Naturais da PUC Minas, Belo Horizonte, MG, Brazil |
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| Abstract: | A new species of Hyphessobrycon is described from a marshland area in the headwaters of Rio Jequitinhonha basin, Minas Gerais, Brazil. The new species differs from congeners by presenting a single well-delimited conspicuous humeral blotch, rounded to vertically oval, restricted to the area dorsal to the lateral-line row of scales, without a narrower downward extension, greatest body depth anterior to dorsal-fin origin, bony processes in anal and pectoral-fin rays of males and four teeth in the inner row of the premaxillary bone. The new species presents a set of morphological features shared by some species currently assigned to Hasemania, Myxiops and to the Astyanax scabripinnis complex. Some of these features are discussed. |
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| Keywords: | conservation freshwater Hyphessobrycon Neotropical region sexual dimorphism taxonomy |
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