Mesosignum weddellensis sp. nov. (Crustacea: Asellota: Mesosignidae), a new isopod species from the abyssal Weddell Sea, Antarctica

Mesosignum weddellensis sp. nov. is described from the abyssal Weddell Sea, Antarctica. This is the second record of Mesosignum from the Southern Ocean, the other known species being M. antarcticum Schultz, 1979. Mesosignum brevispinis Birstein, 1963 from the Pacific Ocean is the most similar specie...

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Bibliographic Details
Published in:Zootaxa
Main Authors: CHOUDHURY, MADHUMITA, BRANDT, ANGELIKA
Format: Article in Journal/Newspaper
Language:English
Published: Mangolia Press 2004
Subjects:
Crustacea
Isopoda
Mesosignum
deep sea
Antarctica
Southern Ocean
taxonomy
new species
Weddell Sea
Pacific
Weddell
Antarc*
Online Access:http://www.mapress.com/j/zt/article/view/zootaxa.501.1.1
https://doi.org/10.11646/zootaxa.501.1.1
Description
Summary:Mesosignum weddellensis sp. nov. is described from the abyssal Weddell Sea, Antarctica. This is the second record of Mesosignum from the Southern Ocean, the other known species being M. antarcticum Schultz, 1979. Mesosignum brevispinis Birstein, 1963 from the Pacific Ocean is the most similar species. The most significant difference is the length of the seventh pereonite, which is only half as long as the other pereonites in M. brevispinis, while in M. weddellensis it is as long as the other pereonites.

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