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Issue: Vol. 5570 No. 2: 17 Jan. 2025
Type: Article
Published: 2025-01-17
DOI: 10.11646/zootaxa.5570.2.7
Page range: 361-370
Abstract views: 96
PDF downloaded: 6

A new species of the genus Seba (Crustacea: Amphipoda: Sebidae) from a cold seep of Mariana Trench

Graduate School of Humanities and Social Sciences; Hiroshima University; Higashi-Hiroshima 739-8524; Japan
X-STAR; Japan Agency for Marine-Earth Science and Technology (JAMSTEC); 2-15 Natsushima-cho; Yokosuka; Kanagawa 237- 0061; Japan
Department of Marine Biology; School of Marine Science and Technology; Tokai University; 3-20-1; Orido; Shimizu; Shizuoka; Shizuoka 424-8610; Japan
Hydrographic and Oceanographic Department of Japan; 3-1-1 Kasumigaseki; Chiyoda-ku; Tokyo 100-8932; Japan; Research Institute for Marine Geodynamics (IMG); Japan Agency for Marine-Earth Science and Technology (JAMSTEC); 2-15 Natsushima-cho; Yokosuka; Kanagawa 237-0061; Japan; Nagoya University; Furo-cho; Chikusa-ku; Nagoya 464-8602; Japan
Graduate School of Humanities and Social Sciences; Hiroshima University; Higashi-Hiroshima 739-8524; Japan,
Crustacea Deep sea hadal zone Shinkai Seep Field systematics

Abstract

A new species of sebid amphipod, Seba marianaensis sp. nov., is described from the Shinkai Seep Field, Mariana Trench, at a depth of 5689–5683 m. Seba marianaensis sp. nov. is most similar to Seba bathybia; however, it differs from S. bathybia by the setation of the mandibular palp and uropod 3 ramus and the shape of the gnathopod 1 coxa. This is the first record of Sebidae from the Mariana Trench.

 

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