Astyanax hermosus, a new species from the Primero River basin, Córdoba, Argentina (Characiformes, Characidae)
Astyanax hermosus, a new species from the Primero River basin, Córdoba, Argentina (Characiformes, Characidae). - A new species of the characid genus Astyanax is described from the endorheic Primero River basin, in central Argentina: Astyanax hermosus sp. n. This species can be distinguished from ali...
| Autores: | , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2005 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/31388 |
| Acesso em linha: | http://hdl.handle.net/11336/31388 |
| Access Level: | acceso abierto |
| Palavra-chave: | Ostariophysi Characidae Astyanax New Species Taxonomy Biodiversity Central Argentina https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
| Resumo: | Astyanax hermosus, a new species from the Primero River basin, Córdoba, Argentina (Characiformes, Characidae). - A new species of the characid genus Astyanax is described from the endorheic Primero River basin, in central Argentina: Astyanax hermosus sp. n. This species can be distinguished from ali other in the genus by the following combination of characters: body relatively low (33.1-38.7% SL); head short (23.5-27.1% SL); snout short (18.3-26.6% HL); interorbital broad (34.9-41.5% HL); maxilla with 1-3 teeth, usually one; iv-v, 17-22 anal-fin rays; 35-38 perforated scales on the lateral line; transverse scales 7 /6; and distinctive color pattem, with Y-shaped humeral spot, a broad grayish longitudinal stripe on the ftanks, e.xtending weakly onto the middle caudal-fin rays, and extremely dark opercular, subopercular and preopercular regions. In .addition, the males of the new species are distinguished by the presence of bony hooks in ali their fins. |
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