Sphenoderes japonicus sp.

IF 1.2 3区生物学 Q2 ZOOLOGY

Zoologischer Anzeiger Pub Date : 2024-10-12 DOI:10.1016/j.jcz.2024.10.003

A.V. Adrianov , A.S. Maiorova

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引用次数: 0

摘要

利用光显微镜和扫描电子显微镜描述了从西北太平洋日本海最深洼地陡坡上的氧化棕色淤泥中采集到的半知母科新物种 Sphenoderes japonicus sp.这种半知更鸟科的新代表的特征是其第一躯干节的结构由外部封闭的角质环和不明显的节内第三躯干节连接组成。第一躯干节的角质环具有深而窄的中背切口和宽得多的中腹部切口，由大的中腹部胎座填充。躯干第 3-9 节上有针状的侧腹棘。侧腹附属刺很小，仅分布在躯干第 5 节上。雌性躯干第 10 节背侧具针状刺，雄性躯干第 10 节中侧具针状刺。S. japonicus sp.nov.是该科的第一个蝙蝠科物种，也是日本海的第一个半知更鸟科物种。

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Sphenoderes japonicus sp. nov. – The first deep water representative of the family Semnoderidae (Kinorhyncha, Cyclorhagida) in the sea of Japan

A new species of semnoderid kinorhynchs, Sphenoderes japonicus sp. nov. collected from oxidized brown silt on the steep slope of the deepest depression in the Sea of Japan, Northwestern Pacific, is described using light and scanning electron microscopy. This new representative of the family Semnoderidae is characterized by the structure of the first trunk segment consisting of externally closed cuticular ring with indistinct intracuticular tergosternal junctions. Cuticular ring of the first trunk segment is with deep and narrow middorsal incision and much broader midventral incision filled by large midventral placid. Acicular lateroventral spines on trunk segments 3–9. Lateroventral accessory spines are minute, only on trunk segment 5. Trunk segment 10 with acicular spines in laterodorsal position in female and in midlateral position in male. S. japonicus sp. nov. constitutes the first bathial species of this family and the first species of Semnoderidae in the Sea of Japan.

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来源期刊

Zoologischer Anzeiger 生物-动物学

CiteScore

2.80

自引率

7.10%

发文量

审稿时长

>12 weeks

期刊介绍： Zoologischer Anzeiger - A Journal of Comparative Zoology is devoted to comparative zoology with a special emphasis on morphology, systematics, biogeography, and evolutionary biology targeting all metazoans, both modern and extinct. We also consider taxonomic submissions addressing a broader systematic and/or evolutionary context. The overall aim of the journal is to contribute to our understanding of the organismic world from an evolutionary perspective. The journal Zoologischer Anzeiger invites suggestions for special issues. Interested parties may contact one of the editors.