Two new species of the genus Austroniscus Vanhoeffen

During the BENDEX expedition (BENthic Disturbance-EXperiment) with RV Polarstern in Antarctic summer 2003/04, species of the genus Austroniscus Vanhoeffen, 1914 were sampled from the continental shelf of the eastern Weddell Sea. Besides Austroniscus ovalis Vanhoeffen, 1914, which is the first record...

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Bibliographic Details
Main Authors: Stefanie Kaiser, Angelika Brandt
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Published: 2007
Subjects:
Key words
Isopoda
Austroniscus
Nannoniscidae
BENDEX
Antarctic shelf
new species
Antarctic
Weddell
Weddell Sea
Antarc*
Antarctica
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.192.9952
http://www.mapress.com/zootaxa/2007f/zt01394p068.pdf
Description
Summary:During the BENDEX expedition (BENthic Disturbance-EXperiment) with RV Polarstern in Antarctic summer 2003/04, species of the genus Austroniscus Vanhoeffen, 1914 were sampled from the continental shelf of the eastern Weddell Sea. Besides Austroniscus ovalis Vanhoeffen, 1914, which is the first record of this species from western Antarctica, two other species were found, i.e. Austroniscus chelus sp. nov. and Austroniscus obscurus sp. nov. They both bear many resemblances to Austroniscus ovalis, but can be easily distinguished from A. ovalis by the shape of the rostral crest and the first pereonite. The two new species are very similar to each other but differ in the number of articles of the antennula and the shape of pleopods 3 to 5.

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