First Record of the Family Myxasteridae (Asteroidea: Velatida) from Western North Pacific with Description of a New Species of Asthenactis

Q4 Agricultural and Biological Sciences

Species Diversity Pub Date : 2022-07-29 DOI:10.12782/specdiv.27.251

Itaru Kobayashi, Masaki Yamamoto, Y. Fujiwara, S. Tsuchida, T. Fujita

引用次数: 0

Abstract

We describe a new species of the rare and deep-sea family Myxasteridae from Japanese waters. This is the first record of this family in the western North Pacific. The new species, Asthenactis agni n. sp., differs from all congeners in having seven arms with an R/r ratio of 7.2, primary radial plates with convex distal edges, and two to three actinolateral spines that are up to 4.7 mm long.

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北太平洋西部Myxasteridae科的首次记录（小行星目：Velatida）及一新种记述

我们描述了一种来自日本海域的罕见的深海蛤科新种。这是该家族在北太平洋西部的第一次记录。新物种Asthenactis agni n. sp.与所有同属物种的不同之处在于，它有7条臂，R/ R比为7.2，主要的放射状板具有凸的远端边缘，以及2到3根长达4.7毫米的外展棘。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Species Diversity Agricultural and Biological Sciences-Animal Science and Zoology

CiteScore

1.20

自引率

0.00%

发文量

期刊介绍： Species Diversity is a peer-reviewed, open-access international journal on all aspects of animal species diversity. Species Diversity is published by the Japanese Society of Systematic Zoology. It is the English-language successor of the Proceedings of the Japanese Society of Systematic Zoology and complements the latter’s Japanese-language continuation, Taxa. e purpose of Species Diversity is to facilitate the international ex change of information about animal species diversity by publishing papers dealing with all aspects of taxonomy, systematics, speciation, biogeography, and life his tory research.