Data/hora: 11/06/2024 14:42:08

Provedor de dados: | 83
País: | Brazil
Título: | A new species of Hemigrammus Gill, 1858 (Characiformes: Characidae) from the rio Madeira and rio Paraguai basins, with a redescription of H. lunatus
Autores: | Ota,Rafaela P.; Lima,Flávio C. T.; Pavanelli,Carla S.
Data: | 2014-06-01
Ano: | 2014
Palavras-chave: | Biogeography; Characidae incertae sedis; Hemigrammus maxillaris; Hemigrammus ulreyi; Type locality.
Resumo: | A new Hemigrammusis described from the rio Paraguai and rio Madeira basins, Mato Grosso and Rondônia States, Brazil. The new species is characterized by possessing a wide dark horizontal stripe across the eye, a vertically elongated humeral blotch, and 4-5 gill-rakers on upper branch and 9-10 on lower. The new species can be easily diagnosed from H. lunatus, the sympatric and morphologically most similar congener, by the shape of humeral blotch and the number of gill rakers. Data of the type material of both Hemigrammus lunatus and H. maxillaris, as well as extensive examination of specimens, allowed us to conclude that H. maxillarisis a junior subjective synonym of H. lunatus. A redescription of H. lunatus, as well as a formal restriction of its type locality, is provided. A putative monophyletic group within Hemigrammus, composed by H. barrigonae, Hemigrammus lunatus, H. machadoi new species, and H. ulreyi, named Hemigrammus lunatus group, is proposed based on overall body morphology and color pattern. Additionally, a discussion on the biogeographical relationships between the rio Paraguai and rio Guaporé basins is provided.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000200265
Editor: | Sociedade Brasileira de Ictiologia
Relação: | 10.1590/1982-0224-20130176
Formato: | text/html
Fonte: | Neotropical Ichthyology  v.12 n.2 2014
Fonte: | info:eu-repo/semantics/openAccess