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A new genus and species of Nanaloricidae (Loricifera: Nanaloricida) from the Clarion-Clipperton Fracture Zone
Zoologischer Anzeiger ( IF 1.2 ) Pub Date : 2020-11-02 , DOI: 10.1016/j.jcz.2020.10.009
Shinta Fujimoto , Chisato Murakami

A loriciferan specimen was found during a survey of the Clarion-Clipperton Fracture Zone conducted by Deep Ocean Resources Development Co. Ltd. (Japan). This specimen was extracted from sediment covering the polymetallic nodules collected from the abyssal plain (−5,223 m). Based on the appearance of its annulated buccal tube, branched clavoscalids, and lorica with plates and anterior spikes, it was classified as an adult male belonging to the family Nanaloricidae. However, this nanaloricid exhibited novel character traits including serrated oral petals, atypical arrangement of the scalids on the introvert, and a lorica with 20 plates bearing 14 short anterior spikes. These characteristics justify the creation of Fafnirloricus polymetallicus gen. et sp. nov. Compared to the five nanaloricid genera with their adult/postlarva stage known, the short anterior spikes and lack of intercalary plicae suggest that this new genus and species is closely related to Phoeniciloricus, and based on its lorica we hypothesize that this new taxon is the most basal of Nanaloricidae.



中文翻译:

克拉里昂-克利珀顿断裂带的一种新的纳科科(Naloricidae)(Loricifera:Nanaloricida)。

在深海资源开发有限公司(日本)对克拉里昂-克利珀顿断裂带的调查中发现了狼毒标本。该标本从沉积物提取,该沉积物覆盖了从深海平原(-5223 m)收集的多金属结核。根据其环状颊管,分支的锁骨鳞茎和带有板和前突状棘的花蕾的外观,将其分类为成年男性,属于纳纳罗科。然而,这种拟南芥显示出新颖的性状特征,包括锯齿状的口腔花瓣,内向的鳞状鳞茎的非典型排列以及带有20个带有14个短前刺的板的花梨。这些特征证明了多金属Fafnirloricus的创建gen。等。十一月 与已知其成年/幼虫期的五个拟南芥属相比,前穗短和and间pl的缺乏表明该新属和种与红楠密切相关并且根据它的位置,我们假设该新分类群是最鼻科的基础。

更新日期:2020-11-02
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