Description of two deep-water copepods of the genus Leptotachidia Becker from the northwestern Pacific (Harpacticoida, Pseudotachidiidae) SCIE SCOPUS

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Title
Description of two deep-water copepods of the genus Leptotachidia Becker from the northwestern Pacific (Harpacticoida, Pseudotachidiidae)
Author(s)
Kim, Jong Guk; Yu, Ok Hwan; Lee, Jimin
KIOST Author(s)
Yu, Ok Hwan(유옥환)Lee, Ji Min(이지민)
Alternative Author(s)
김종국; 유옥환; 이지민
Publication Year
2019-08-29
Abstract
The monospecific genus Leptotachidia Becker, 1974 (Pseudotachidiidae Lang, 1936) was previously known only from the deep Atlantic. Female specimens of two unknown species of this genus were collected from abyssal sediments during an expedition to the northwestern Pacific on board research vessel ISABU (Korea Institute of Ocean Science and Technology) in November 2017. In this paper we describe the females of two new species, L. senaria sp. nov. and L. apousia sp. nov. The new species were attributed to the genus Leptotachidia by the combination of the five-segmented female antennule, presence of the Brodskaya organ on the distal antennulary segment, and the second exopodal segments of second to fourth legs without inner setae. An outstanding character of both Pacific species is the reduced armature of thoracic legs in contrast to the type species, L. iberica Becker, 1974. In addition, the seta! armature of L. senaria sp. nov. and L. apousia sp. nov. is unique within the genus in that the female leg 5 of L. senaria sp. nov. has six elements instead of five; and the antennary exopod of L. apousia sp. nov. bears a single seta on the proximal segment instead of two. This is the first record of Leptotachidia from the Pacific. A key to all three species of Leptotachidia is provided.
ISSN
1313-2989
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/40327
DOI
10.3897/zookeys.873.34630
Bibliographic Citation
ZOOKEYS, no.873, pp.133 - 153, 2019
Publisher
PENSOFT PUBLISHERS
Subject
GULF-OF-CALIFORNIA; PARANANNOPIDAE COPEPODA; AEGISTHIDAE COPEPODA; HYDROTHERMAL VENTS; CRUSTACEA COPEPODA; COLD SEEPS; SEA; GENERA; LANG; SENTIROPSIS
Keywords
abyssal harpacticoids; biodiversity; Brodskaya organ; Danielsscniinac; deep-sea; Paradanielssenia group
Type
Article
Language
English
Document Type
Article
Publisher
PENSOFT PUBLISHERS
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