{"title":"A New Species of <i>Prosadenoporus</i> (Nemertea: Eumonostilifera) from the North-East Coast of the Bay of Bengal, India.","authors":"Jhumpa Majhi, Soumik Dhara, Sudipta Kumar Ghorai","doi":"10.2108/zs240094","DOIUrl":null,"url":null,"abstract":"<p><p>A semi-terrestrial eumonostiliferous hoplonemertean species was discovered on the northeastern coast of the Bay of Bengal, India. Histological studies confirmed its affiliation with the genus <i>Prosadenoporus</i> Bürger, 1890. In this paper, it is described as a new species, <i>Prosadenoporus indicus</i> sp. nov. This species is distinguished from its congeners by a distinct black patch on the antero-dorsal surface of the head, a large body size, 16-18 proboscis nerves, a large frontal organ, the presence of neurochord cell, and exclusively circular muscles surrounding the rhynchodeum. A maximum-likelihood analysis of 658-bp cytochrome <i>c</i> oxidase subunit I (COI) gene sequences, including data from this species and five congeners available in public databases, supported the generic placement of the new species. The new species exhibited 10.3-11.1% uncorrected <i>p</i>-distance differences in 658-bp COI sequences compared to its congeners.</p>","PeriodicalId":24040,"journal":{"name":"Zoological Science","volume":"42 2","pages":"240-247"},"PeriodicalIF":0.9000,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zoological Science","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.2108/zs240094","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ZOOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
A semi-terrestrial eumonostiliferous hoplonemertean species was discovered on the northeastern coast of the Bay of Bengal, India. Histological studies confirmed its affiliation with the genus Prosadenoporus Bürger, 1890. In this paper, it is described as a new species, Prosadenoporus indicus sp. nov. This species is distinguished from its congeners by a distinct black patch on the antero-dorsal surface of the head, a large body size, 16-18 proboscis nerves, a large frontal organ, the presence of neurochord cell, and exclusively circular muscles surrounding the rhynchodeum. A maximum-likelihood analysis of 658-bp cytochrome c oxidase subunit I (COI) gene sequences, including data from this species and five congeners available in public databases, supported the generic placement of the new species. The new species exhibited 10.3-11.1% uncorrected p-distance differences in 658-bp COI sequences compared to its congeners.
期刊介绍：
Zoological Science is published by the Zoological Society of Japan and devoted to publication of original articles, reviews and editorials that cover the broad field of zoology. The journal was founded in 1984 as a result of the consolidation of Zoological Magazine (1888–1983) and Annotationes Zoologicae Japonenses (1897–1983), the former official journals of the Zoological Society of Japan. Each annual volume consists of six regular issues, one every two months.
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