A new genus and species of small characid (Ostariophysi, Characidae) from the upper río Bermejo basin, northwestern Argentina

A new genus and species of small characid is described in this paper. The new genus, Nans gen. n., is diagnosed by the combination of: ii,7-8 dorsal-fin rays, 10-15 branched anal-fin rays, 5 teeth in the inner premaxillary row, rotation of the pelvic bone about 90°, rotation of the pelvic fin muscle...

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Detalles Bibliográficos
Autores principales:	Mirande, Juan Marcos, Aguilera, Gastón, Azpelicueta, María de las Mercedes
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2004
Materias:	Zoología Characidae Characiformes Nans New genus Río Bermejo basin
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/83376
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-83376
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Zoología Characidae Characiformes Nans New genus Río Bermejo basin
spellingShingle	Zoología Characidae Characiformes Nans New genus Río Bermejo basin Mirande, Juan Marcos Aguilera, Gastón Azpelicueta, María de las Mercedes A new genus and species of small characid (Ostariophysi, Characidae) from the upper río Bermejo basin, northwestern Argentina
topic_facet	Zoología Characidae Characiformes Nans New genus Río Bermejo basin
description	A new genus and species of small characid is described in this paper. The new genus, Nans gen. n., is diagnosed by the combination of: ii,7-8 dorsal-fin rays, 10-15 branched anal-fin rays, 5 teeth in the inner premaxillary row, rotation of the pelvic bone about 90°, rotation of the pelvic fin muscles, pelvic fin curved and forming a complete tube in mature males, incomplete foramen for exit of the olfactory nerve in the lateral ethmoid. Other characters which help in the identification of Nans are the large subcircular foramen in the dorsal vomerine lamella which articulates with the mesethmoid, the absence of an extrascapular sensory canal in the postemporal, and a laterosensory canal in the anguloarticular. The type species, Nans indefessus sp. n. was collected in the río Anta Muerta and arroyo Colorado, tributaries of the río Blanco, and in the río Pescado, upper río Bermejo basin, Salta, Argentina.
format	Articulo Articulo
author	Mirande, Juan Marcos Aguilera, Gastón Azpelicueta, María de las Mercedes
author_facet	Mirande, Juan Marcos Aguilera, Gastón Azpelicueta, María de las Mercedes
author_sort	Mirande, Juan Marcos
title	A new genus and species of small characid (Ostariophysi, Characidae) from the upper río Bermejo basin, northwestern Argentina
title_short	A new genus and species of small characid (Ostariophysi, Characidae) from the upper río Bermejo basin, northwestern Argentina
title_full	A new genus and species of small characid (Ostariophysi, Characidae) from the upper río Bermejo basin, northwestern Argentina
title_fullStr	A new genus and species of small characid (Ostariophysi, Characidae) from the upper río Bermejo basin, northwestern Argentina
title_full_unstemmed	A new genus and species of small characid (Ostariophysi, Characidae) from the upper río Bermejo basin, northwestern Argentina
title_sort	new genus and species of small characid (ostariophysi, characidae) from the upper río bermejo basin, northwestern argentina
publishDate	2004
url	http://sedici.unlp.edu.ar/handle/10915/83376
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bdutipo_str	Repositorios
_version_	1764820488554545153

A new genus and species of small characid (Ostariophysi, Characidae) from the upper río Bermejo basin, northwestern Argentina

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