First Record of the Genus Pseudohelice Sakai, Türkay & Yang, 2006 from India and Description of a New Pseudocryptic Species (Crustacea: Brachyura: Varunidae).

IF 1.5 3区生物学 Q2 ZOOLOGY

Zoological Studies Pub Date : 2022-09-29 eCollection Date: 2022-01-01 DOI:10.6620/ZS.2022.61-56

Mani Prema, Jhih-Wei Hsu, Hsi-Te Shih, Samuthirapandian Ravichandran

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Abstract

A new pseudocryptic species of the varunid crab genus Pseudohelice Sakai, Türkay & Yang, 2006, is described from India based on morphological and molecular evidence. The new species was collected from higher intertidal zones in the Vellar River estuary, Tamil Nadu, southeastern India, in a habitat composed of muddy and sandy sediment. Pseudohelice annamalai n. sp. is similar to P. subquadrata (Dana, 1851) and P. latreillii (H. Milne Edwards, 1837) in general form, but can be distinguished from the congeners by the characters of the infraorbital ridges, male first gonopod, and female vulvae. In addition, the mitochondrial cytochrome oxidase subunit I sequences also support the new species. The occurrence of Pseudohelice from India links the distribution gap between the western Indian Ocean and western Pacific Ocean. The new species provides additional evidence for the geographic isolation of the eastern Indian Ocean for some marine organisms.

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First Record of the Genus Pseudohelice Sakai, Türkay & Yang, 2006 from India and Description of a New Pseudocryptic Species (Crustacea: Brachyura: Varunidae).

基于形态学和分子证据，本文描述了印度的一个假螯蟹新种 Pseudohelice Sakai, Türkay & Yang, 2006。该新物种采集自印度东南部泰米尔纳德邦韦拉尔河口的潮间带，栖息地由泥沙沉积物组成。Pseudohelice annamalai n. sp.与 P. subquadrata (Dana, 1851) 和 P. latreillii (H. Milne Edwards, 1837) 大体相似，但可以通过眶下脊、雄性第一性腺和雌性外阴的特征将其与同属种区分开来。此外，线粒体细胞色素氧化酶亚单位 I 序列也支持该新物种。印度伪海龙的出现填补了西印度洋和西太平洋之间的分布空白。该新物种为东印度洋某些海洋生物的地理隔离提供了更多证据。

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

Zoological Studies 生物-动物学

CiteScore

2.80

自引率

6.20%

发文量

审稿时长

6-12 weeks

期刊介绍： Zoological Studies publishes original research papers in five major fields: Animal Behavior, Comparative Physiology, Evolution, Ecology, and Systematics and Biogeography. Manuscripts are welcome from around the world and must be written in English. When the manuscript concerns the use of animals or specimens in research, a statement must be included to the effect that the author(s) has adhered to the legal requirements of the country in which the work was carried out or to any institutional guidelines.