New species of Phenacorhamdia (Siluriformes: Heptapteridae) from the Xingu River basin

IF 2 4区生物学 Q1 ZOOLOGY

Neotropical Ichthyology Pub Date : 2022-01-01 DOI:10.1590/1982-0224-2021-0143

Gabriel S. C. Silva, L. Ochoa, Í. S. Castro

引用次数: 1

Abstract

Abstract Heptapteridae is a diverse group of catfishes composed of 231 valid species endemic to the Neotropical region, recognized in two subfamilies: Rhamdiinae and Heptapterinae. Phenacorhamdia is a Heptapterinae member and currently has 13 valid species broadly distributed throughout the main river basins of South America. Here we described a new species of Phenacorhamdia from the Xingu River basin. Morphological data were obtained from 30 specimens under 23 morphometric measures and 6 meristic counts. The new species differs from congeners based on the exclusive combination of the following diagnostic characters: atypical mottled colored body and all fins with interradial membranes mottled pigmented; multicuspid teeth; maxillary barbel reaching pectoral-fin origin; lacking a short extension of the first pectoral-fin ray; caudal fin lobes extremely elongated and pointed; and 43−45 total vertebrae.

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文章标题新谷河流域棘足虫属新种(志留目:七足虫科)

摘要七爪鱼科(Heptapteridae)是由新热带地区特有的231种有效鲶鱼组成的一个多样化的类群，分为两个亚科:Rhamdiinae和七爪鱼科。Phenacorhamdia是七爪虫科成员，目前有13个有效种，广泛分布在南美洲的主要河流流域。本文报道了新谷河流域的一新种。对30个标本进行了23项形态测量和6项分生计数，获得了形态学数据。新种与同类的区别在于以下诊断特征的独特组合:非典型斑驳彩色体和所有鳍具有斑驳的径向膜;multicuspid牙齿;上颌须达到胸鳍起源;缺乏第一胸鳍射线的短延伸;尾鳍裂片极拉长和尖;43 - 45个椎骨。

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

Neotropical Ichthyology 生物-动物学

CiteScore

2.80

自引率

17.60%

发文量

审稿时长

6-12 weeks

期刊介绍： Neotropical Ichthyology is the official journal of the Sociedade Brasileira de Ictiologia (SBI). It is an international peer-reviewed Open Access periodical that publishes original articles and reviews exclusively on Neotropical freshwater and marine fishes and constitutes an International Forum to disclose and discuss results of original research on the diversity of marine, estuarine and freshwater Neotropical fishes. -Frequency: Four issues per year published only online since 2020, using the ‘rolling pass’ system, which posts articles online immediately as soon as they are ready for publication. A searchable and citable Digital Object Identifier (DOI) is assigned to each article immediately after online publication, with no need to await the issue’s closing. -Areas of interest: Biology, Biochemistry and Physiology, Ecology, Ethology, Genetics and Molecular Biology, Systematics. -Peer review process: The Editor-in-Chief screens each manuscript submitted to Neotropical Ichthyology to verify whether it is within the journal’s scope and policy, presents original research and follows the journal’s guidelines. After passing through the initial screening, articles are assigned to a Section Editor, who then assigns an Associate Editor to start the single blind review process.