A new species of Calliopius (Crustacea: Amphipoda: Calliopiidae) from Japan

IF 0.5 4区生物学 Q3 Agricultural and Biological Sciences

Proceedings of the Biological Society of Washington Pub Date : 2020-04-15 DOI:10.2988/20-00001

Ryuma Shimoji, T. Nakano, K. Tomikawa

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引用次数: 0

Abstract

Abstract. A new species of calliopiid amphipod, Calliopius ezoensis, from the eastern coasts of Hokkaido, Japan, is described and named. Calliopius ezoensis is similar to the North Atlantic C. sablensis Bousfield & Hendrycks, 1997, but can be discriminated from it in possessing two rows of calceoli on the peduncular articles of antennae 1 and 2 of the female, having a mandibular palp of article 3 longer than article 2, and setation of epimeral plate 3 on the ventral submargin. The new species is distinguished from North Pacific congeners by a combination of characteristics: in having dorsally smooth pereonites, the number of marginal and submarginal setal rows on epimeral plate 2, setation of palp article 2 of maxilla 1, indistinct sexually dimorphic gnathopods 1 and 2, and the length ratio of the inner and outer rami of uropod 2. In addition to previously provided DNA sequences of nuclear histone H3 and mitochondrial 16S rRNA genes, nuclear 28S rRNA and mitochondrial cytochrome c oxidase subunit I sequences of this new species are provided for the future comparative purposes.

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日本卡利虫属一新种（甲壳纲：两栖纲：卡利虫科）

摘要描述并命名了日本北海道东部海岸的一种新的类圆皮两栖动物，即类圆皮动物（Calliopius ezoensis）。Calliopius ezoensis与北大西洋C.sablensis Bousfield&Hendrycks，1997相似，但与之不同的是，雌性触角1和2的足柄上有两排钙质，第3条的下颌须比第2条长，腹面亚缘上有表外板3。该新物种与北太平洋同类物种的区别在于其特征组合：背部光滑的长毛，表外板上边缘和亚边缘刚毛排的数量2，上颌骨须状物2的刚毛1，两性不明显的颚足类1和2，以及尾足类内外支的长度比2。除了先前提供的核组蛋白H3和线粒体16S rRNA基因的DNA序列外，还提供了该新物种的核28S rRNA和线粒体细胞色素c氧化酶亚基I序列以用于未来的比较目的。

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

Proceedings of the Biological Society of Washington 生物-生物学

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0.00%

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审稿时长

>12 weeks

期刊介绍： The official publication of the Biological Society of Washington, the Proceedings of the Biological Society of Washington is an international journal containing peer-reviewed papers that broadly bear on systematics in the biological sciences (botany and zoology), paleontology, and notices of business transacted at Society meetings.