日本的新型马尾藻钻孔 Limnoria Leach, 1814（甲壳纲，等足目， Limnoriidae）

New species of Sargassum-boring Limnoria Leach, 1814 (Crustacea, Isopoda, Limnoriidae) from Japan.

机构信息

Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan..

Department of Biology, Graduate School of Science, Chiba University, Chiba, Japan.

出版信息

Zootaxa. 2021 May 13;4970(1):119130. doi: 10.11646/zootaxa.4970.1.4.

DOI:10.11646/zootaxa.4970.1.4

PMID:34186906

Abstract

A new marine Sargassum-boring species of Limnoria (Limnoriidae) is described on the basis of specimens obtained at Kamogawa-shi, Chiba Prefecture, Japan. Limnoria aspera sp. nov. shares a reduced mandibular palp to a seta, algal-feeding, and the clavate shaped epipod of the maxilliped with the other species of non-mandibular-palp group. L. aspera sp. nov. differs morphologically from the congeneric species by secondary unguis of pereopods and unique carinae of pleonite 5 and pleotelson. We describe the sequences of the mitochondrial COI gene and the nuclear 28S rDNA gene. L. aspera sp. nov. differs by 14.218.0% in p-distance based on COI sequences from other Japanese species, L. furca and L. nagatai.

摘要

本文基于在日本千叶县Kamogawa-shi 获得的标本，描述了一种新的海洋马尾藻钻孔种 Limnoria（Limnoriidae）。Limnoria aspera sp. nov. 具有简化的下颌触须，以刚毛为食，以及大型颚足的棒状附肢，与其他非下颌触须组的物种相同。Limnoria aspera sp. nov. 在形态上与同属种的区别在于，它的游泳足的次生爪和独特的 5 节体节和pleotelson 的嵴。我们描述了线粒体 COI 基因和核 28S rDNA 基因的序列。Limnoria aspera sp. nov. 在 COI 序列上与其他日本种 Limnoria furca 和 L. nagatai 相比，差异为 14.218.0%。