A new Stygarctus (Arthrotardigrada : Stygarctidae) from Japan, with entangled seminal receptacle ducts.
A new Stygarctus (Arthrotardigrada : Stygarctidae) from Japan, with entangled seminal receptacle ducts.
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来自日本的一种新的 Stygarctus（节肢动物门：Stygarctidae），具有纠缠的精容器管。
DOI：
10.11646/zootaxa.3784.2.8
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发表时间：
2014
期刊：
影响因子：
0.9
通讯作者：
Shinta Fujirnoto
中科院分区：
文献类型：
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作者：
宮川和也;塚本雅裕;篠永東吾;伊藤 雄一郎;陳 鵬;永井亜希子;塙 隆夫;福本 景太;境 愛一郎;Shinta Fujirnoto
绫纹黑腹蛛，新种（Arthrotardigrada：Stygarctidae），描述来自一个桑迪位于Okinoshima，Tateyama Bay，Boso半岛，Honshu，日本。最突出的特征是在雌性生殖器结构中观察到的，在外部开口附近的贮精囊导管形成三维缠结，内部增厚位于生殖孔周围以及生殖孔和肛门之间。该新种与其同类的区别在于，不包括S。abornatus McKirdy等，1976年，没有关于生殖器结构的资料。然而，S. nov.和S. abornatus可以通过前者的背刺的存在来区分，后者没有。
Stygarctus ayatori sp. nov.(Arthrotardigrada: Stygarctidae), is described from a sandy beach located at Okinoshima, Tateyama Bay, Boso Peninsula, Honshu, Japan. The most prominent characters were observed in the female genital structure, with the seminal receptacle ducts forming a three-dimensional entanglement near the exterior opening, and internal thickening situated peripheral to the gonopore and between the gonopore and anus. The new species is distinguished from the congeners by these characters; excluding S. abornatus McKirdy et al., 1976 for which there is no information on the genital structure. However, S. ayatori sp. nov. and S. abornatus can be differentiated by the presence of dorsal spines on the former species, which are absent from the latter.