A new species of Acanthaspidia Stebbing, 1898 (Isopoda, Asellota, Acanthaspidiidae) from the bathyal Weddell Sea (Southern Ocean)

A new acanthaspidiid species, Acanthaspidia matsi sp. nov., is described from the Powell Basin slope (Weddell Sea, Southern Ocean). Specimens of the new species were collected during the expedition ANDEEP III on board RV Polarstern in March 2005. The new species most closely resembles Acanthaspidia...

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Bibliographic Details
Published in:Zootaxa
Main Authors: TIMM, MARLENE, KAISER, STEFANIE, BRANDT, ANGELIKA
Format: Article in Journal/Newspaper
Language:English
Published: Mangolia Press 2013
Subjects:
Acanthaspidia matsi sp. nov.
Antarctic
deep sea
taxonomy
Crustacea
Ianthopsis
Isopoda
Southern Ocean
Weddell Sea
Weddell
Powell Basin
Antarc*
Online Access:https://www.mapress.com/j/zt/article/view/zootaxa.3692.1.12
https://doi.org/10.11646/zootaxa.3692.1.12
Description
Summary:A new acanthaspidiid species, Acanthaspidia matsi sp. nov., is described from the Powell Basin slope (Weddell Sea, Southern Ocean). Specimens of the new species were collected during the expedition ANDEEP III on board RV Polarstern in March 2005. The new species most closely resembles Acanthaspidia typhlops (G. O. Sars, 1879), Acanthaspidia natalensis (Kensley, 1977) andAcanthaspidia bifurcatoides Kussakin & Vasina, 1982, but can be distinguished from all these species by the following characters: rostrum strongly trifid (tips 0.4 times rostrum length); pereonites 1, 3–4 and 6 with 2 mid-dorsal spines; pleotelson spinulated, with 2 robust mid-dorsal spines. Systematic difficulties to distinguish the genera Acanthaspidia Stebbing, 1898 and Ianthopsis Beddard, 1886 are discussed and a key to all species in the genus Acanthaspidia is provided.

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