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Title: A new neotenous genus and species, Deltanthura palpus gen. et sp. nov. (Isopoda, Anthuroidea, Paranthuridae) from Japan, with a revised key to the genera in Paranthuridae
Authors: Shiraki, Shoki
Shimomura, Michitaka
Kakui, Keiichi
Author's alias: 白木, 祥貴
下村, 通誉
角井, 敬知
Keywords: Califanthura
Cymothoida
deep sea
neoteny
Peracarida
taxonomy
Issue Date: 31-Mar-2022
Publisher: Pensoft Publishers
Journal title: Zoosystematics and Evolution
Volume: 98
Issue: 1
Start page: 109
End page: 115
Abstract: We describe a new paranthurid isopod genus and species, Deltanthura palpus gen. et sp. nov., collected from a depth of 805–852 m off the southern coast of Mie prefecture, Japan. Deltanthura is similar to Pseudanthura Richardson, 1911 in having a triangular pleotelson, acute mandible with a 3-articulate palp, a maxillipedal endite, and a tapering uropodal exopod, but differs in having eyes and neotenous characters (reduced pereonite 7 and pereopods 7 lacking). Deltanthura and four paranthurid genera (Califanthura Schultz, 1977, Colanthura Richardson, 1902, Cruranthura Thomson, 1946, and Cruregens Chilton, 1882) share neotenous characters, but in Deltanthura the mandible is acute, with a 3-articulate palp and maxillipedal endites are present. Califanthura minuta Kensley & Heard, 1991 may belong in Deltanthura as they share the triangular pleotelson and tapering uropodal exopod, but we refrain from transferring it to Deltanthura as its description lacks the other diagnostic characters of Deltanthura. We provide a revised key to all genera in Paranthuridae Menzies & Glynn, 1968.
Description: 深い海の底からアシタラズのウミナナフシの新種を発見. 京都大学プレスリリース. 2022-04-08.
Rights: © 2022 Shoki Shiraki, Michitaka Shimomura, Keiichi Kakui.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
URI: http://hdl.handle.net/2433/269221
DOI(Published Version): 10.3897/zse.98.81772
Related Link: https://www.kyoto-u.ac.jp/ja/research-news/2022-04-08
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