Stenotanais (Crustacea, Tanaidacea) from the Santos Basin: the first described species of the family Akanthophoreidae off the Brazilian coast

IF 1.6 2区生物学 Q2 ZOOLOGY

Zoosystematics and Evolution Pub Date : 2023-10-04 DOI:10.3897/zse.99.103003

Juliana Lopes Segadilha, Graham Bird, Marcos Tavares

引用次数: 0

Abstract

Benthic samples collected from depths ranging between 686 and 2410 m along the Brazilian continental upper slope from Rio de Janeiro State to Santa Catarina State (23°S to 27°S) yielded a wealth of tanaidacean material, including two new species of Stenotanais . This is the first described species of the family Akanthophoreidae from Brazilian waters. Stenotanais leonardoi sp. nov. has a combination of unique characters including the uropod basal article longer than the pleotelson and the exopod somewhat wider than the endopod, longer than the endopod article-1 (0.7 times endopod length) and supporting two flat and wide terminal setae. Stenotanais uropedon sp. nov. is recognisable by its oar-shaped uropod endopod, with article-2 large, broad and flattened and the short exopod, only 0.3 times the endopod length. An identification key to the species of Stenotanais is given. These two species bring the total number of described akanthophoreids to 56 species and that of all tanaidaceans in Brazilian waters to 66 species.

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来自桑托斯盆地的赤虾(甲壳纲，赤虾科):巴西海岸外赤虾科的第一个被描述的物种

从里约热内卢州到圣卡塔琳娜州(23°S至27°S)沿巴西大陆上坡686至2410米深度范围内收集的底栖生物样本产生了丰富的tanaidae材料，包括两个新的Stenotanais物种。这是在巴西水域发现的第一个被描述的Akanthophoreidae科物种。列氏窄足(Stenotanais leonardoi sp. 11 .)具有尾足基条长于后肢，外足略宽于内足，长于内足1条(0.7倍于内足长度)，并有两根平而宽的顶毛的独特性状组合。欧洲窄足鼠(Stenotanais europepedon sp. 11 .)的尾足内足呈桨状，第二肢大、宽、扁平，外足较短，仅为内足长度的0.3倍。并给出了其种类的鉴定钥匙。这两个物种使已描述的棘蚜类总数达到56种，巴西水域的所有棘蚜类总数达到66种。

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

Zoosystematics and Evolution ZOOLOGY-

CiteScore

3.50

自引率

5.00%

发文量

审稿时长

16 weeks

期刊介绍： Zoosystematics and Evolution, formerly Mitteilungen aus dem Museum für Naturkunde in Berlin, is an international, open access, peer-reviewed life science journal devoted to whole-organism biology. It publishes original research and review articles in the field of Metazoan taxonomy, biosystematics, evolution, morphology, development and biogeography at all taxonomic levels. The journal''s scope encompasses primary information from collection-related research, taxonomic descriptions and discoveries, revisions, annotated type catalogues, aspects of the history of science, and contributions on new methods and principles of systematics. Articles whose main topic is ecology, functional anatomy, physiology, or ethology are only acceptable when of systematic or evolutionary relevance and perspective.