A new species of Tetragoniceps Brady, 1880 (Copepoda, Harpacticoida, Tetragonicipitidae) from an anchialine cave in Bermuda, with an updated key to the species of the genus.

IF 1.3 3区生物学 Q2 ZOOLOGY

ZooKeys Pub Date : 2025-05-20 eCollection Date: 2025-01-01 DOI:10.3897/zookeys.1239.144436

Giovanni Mussini, Yuuki J Niimi, Sahar Khodami, Terue C Kihara, Pedro Martinez Arbizu, Leocadio Blanco-Bercial

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Abstract

Tetragonicepsbermudensis sp. nov. (Copepoda, Harpacticoida, Tetragonicipitidae) is described based on an ovigerous female collected from Roadside Cave, a tidally influenced anchialine cavern in Bermuda. The new taxon represents the 16^th recorded species of Tetragoniceps Brady, 1880. It can be distinguished from congeneric species by the length:width ratio of the caudal rami (approximately 10 times longer than wide), its cephalothorax with a smooth dorsal surface, and the diagnostic setal formula of its pereiopods 1-5. Tetragonicepsbermudensis sp. nov. is the first record of Tetragoniceps from Bermuda and the first known anchialine species in the genus globally. Based on our description of the new species, we provide a revised key to the species of Tetragoniceps. In addition, we include an updated table of salient morphological characters for the females of the genus, providing grounds for a preliminary analysis of the phylogenetic relationships of its constituent species.

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A 1880年百慕达安奇兰岩洞中发现的四爪蛇属（桡足目，羽足目，四爪蛇科）新种，附有该属物种的更新钥匙。

根据在百慕大一个受潮汐影响的黄芪碱洞穴——路边洞中采集到的雌虫，描述了tetragonicepsbermuda sp. 11 .（桡足目，harpacticoda, Tetragonicipitidae）。这一新分类群代表了有记录的Tetragoniceps Brady， 1880年的第16种。从尾支的长宽比（约为宽度的10倍）、背表面光滑的头胸和感觉足类1-5的诊断公式可将其与同属种区分开来。tetragonicepsberumensis sp. 11 .是百慕大首次记录到的Tetragoniceps，也是全球已知的该属第一个胺类物种。在对新种的描述基础上，我们提供了一种修订后的四龙头属的种键。此外，我们还更新了该属雌性的显著形态特征表，为其组成物种的系统发育关系的初步分析提供了依据。

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

ZooKeys 生物-动物学

CiteScore

2.70

自引率

15.40%

发文量

400

审稿时长

3 months

期刊介绍： ZooKeys is a peer-reviewed, open-access, online and print, rapidly produced journal launched to support free exchange of ideas and information in systematic zoology, phylogeny and biogeography. All papers can be freely copied, downloaded, printed and distributed at no charge. Authors and readers are thus encouraged to post the pdf files of published papers on homepages or elsewhere to expedite distribution. There is no charge for color.

﻿A new species of Tetragoniceps Brady, 1880 (Copepoda, Harpacticoida, Tetragonicipitidae) from an anchialine cave in Bermuda, with an updated key to the species of the genus.

Abstract

A new species of Tetragoniceps Brady, 1880 (Copepoda, Harpacticoida, Tetragonicipitidae) from an anchialine cave in Bermuda, with an updated key to the species of the genus.