A new ectoparasitic ascothoracidan species has been discovered off northern Tasman Sea at a depth of 520 m. Single female, described herein as Waginella ebonita Kolbasov and Newman sp. nov. in the family Synagogidae Gruvel, 1905, was collected on the column of crinoid Metacrinus sp. This is the first study of a new form of Waginella to be based on the extensive use of both light and scanning electron microscopy to document the fine-scale external morphology. We studied the external morphology of other two species of Waginella, W. cf. axotremata and W. sandersi utilizing SEM and compared fine structures of all congeners. The genus Waginella represents a monophyletic taxon including at least 4 species having similar and unique morphology even on the ultrastructural level. Two species, W. cf. axotremata and W. cf. metacrinicola may represent at least two complexes of species. The morphology of an attachment apparatus in all species of Waginella suggests that they remain attached to the host for a considerable period of time. The lattice organs of Waginella have a unique structure distinguishing from all Thecostraca. Waginella ebonita sp. nov. is the second species of this genus known to harbor hyperparasitic cryptoniscid isopods representing parasitic castrators.

中文翻译：

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塔斯曼海（Tasman Sea）的茎状海百合中寄生的一种新的Waginella（甲壳纲：Thecostraca：Ascothoracida），并记录了相关属的形态

在塔斯曼海北部520 m的深度发现了一种新的寄生寄生的士古酸。单身女性，在本文中被描述为Waginella ebonita Kolbasov和Newman sp.。十一月 在1905年的Synagogidae Gruvel家族中被收集在海百合Metacrinus sp。的柱子上。这是对新形式Waginella的首次研究，该研究基于广泛使用光电子显微镜和扫描电子显微镜来记录精细尺度的外部形态。我们研究了Waginella，W. cf.的其他两个物种的外部形态。axotremata和W. sandersi利用SEM比较了所有同类物的精细结构。Waginella属代表一种单系统分类群，包括至少4种即使在超微结构水平上也具有相似和独特的形态。W. cf.的两个物种。轴突和W.cf。metacrinicola可能代表至少两种物种的复合体。在Waginella的所有物种中，附着装置的形态表明，它们在相当长的一段时间内仍保持与宿主的附着。Waginella的晶格器官具有不同于所有Thecostraca的独特结构。Waginella ebonita sp。十一月 是已知的该属的第二种，其隐含代表寄生施主的超寄生隐孢子虫等足动物。