A new species of Aristias Boeck, 1871 (Amphipoda: Gammaridea: Aristiidae) from Aysén Region, Chile

Biodiversity and Natural History

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Title A new species of Aristias Boeck, 1871 (Amphipoda: Gammaridea: Aristiidae) from Aysén Region, Chile
Una especie nueva de Aristias Boeck, 1871 (Amphipoda: Gammaridea: Aristiidae) de la Región de Aysén, Chile
 
Creator Pérez-Schultheiss, Jorge
 
Description A new species of Aristias is described from the Aysén Region, southern Chile. The new taxon is similar to A. antarcticus Walker, 1906; however differs of all previous record of this species in Southern Ocean by a combination of characters: the anterior margin of lateral cephalic lobe is straight; the upper lip is bounded by a pit, not distinctly projecting in front of the epistome; the posterior margin of the epimeron 3 is smoothly crenulated; the inner ramus of uropod 3 is shorter than outer ramus, while the lobes of the telson are subtriangular. A complete description and illustrations of Aristias linnaei n. sp. are provided, and its relationship with similar species is discussed.
Se describe una especie nueva del género Aristias de aguas marinas de la Región de Aysén, sur de Chile. El nuevo taxón es similar a A. antarcticus Walker, 1906; sin embargo difiere de todos los registros previos de esta especie en los océanos del sur por una combinación de caracteres: el margen anterior del lóbulo cefálico lateral es recto; el labio superior está delimitado por una fosa, no proyectado notablemente frente al epistoma; el margen posterior del epímero 3 es ligeramente crenulado; la rama interna del urópodo 3 es más corta que la externa y los lóbulos del telson son subtriangulares. Se proporciona una descripción completa e ilustraciones de Aristias linnaei n. sp. y se discute su relación con especies similares.
 
Publisher Centro de Estudios en Biodiversidad
 
Date 2015-07-06
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
 
Identifier http://www.biodiversnathist.com/index.php/bnh/article/view/11
 
Source Biodiversity and Natural History; Vol 1 No 2 (2015); 35-40
Biodiversity and Natural History; Vol 1 No 2 (2015); 35-40
Biodiversity and Natural History; Vol 1 No 2 (2015); 35-40
0719-4986
 
Language eng
 
Relation http://www.biodiversnathist.com/index.php/bnh/article/view/11/17
 
Rights Copyright (c) 2015 Biodiversity and Natural History
http://creativecommons.org/licenses/by-nc/4.0
 

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