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Issue: Vol. 1866 No. 1: 3 Sep. 2008
Type: Article
Published: 2008-09-03
DOI: 10.11646/zootaxa.1866.1.12
Page range: 263–276
Abstract views: 23
PDF downloaded: 1

A new species of Ischnomesidae (Crustacea: Isopoda) from the Southern Ocean,Stylomesus weddellensis sp. nov.

University of Hamburg, Biocentrum Grindel and Zoological Museum, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany
German Centre for Marine Biodiversity Research (DZMB), Senckenberg Research Institute, Biocentrum Grindel, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany
Crustacea Isopoda Asellota Ischnomesidae Stylomesus deep sea Antarctica Southern Ocean taxonomy new species

Abstract

Stylomesus weddellensis sp. nov. is described from the abyssal Weddell Sea, Southern Ocean. It can easily be distinguished from the other species of the genus by its typical spine pattern. Besides the long frontolaterally directed projections of pereonite 1, pereonites 1-3 bear two mediolateral to caudolateral blunt spines which are absent in all other Southern Ocean or South Atlantic species of Stylomesus Wolff, 1956. The pereopod 7 is present, and is not fused to pleotelson. A list of all currently known 17 species of Stylomesus is presented including data on depth and distribution.

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