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首页> 外文期刊>Bulletin of the British Arachnological Society >Sexual Dimorphism in Neoscona and Other Araneids: the Femoral Groove
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Sexual Dimorphism in Neoscona and Other Araneids: the Femoral Groove

机译：Neoscona和其他Araneids中的性二态性：股沟。

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摘要

For many years secondary sexual characters of males have been used to separate species and species groups in araneid spiders. In the keys and descriptions provided by Simon (1929), Wiehle (1931) and Locket & Millidge (1953), hooks and tubercles of theanterior coxae are mentioned, as are incrassate tibiae I and the presence of spurs and spines. Another character present in many species, the femoral groove at the proximal end of femur II, has been observed much less frequently. However, this groove was described as early as 1901 by F. O. Pickard-Cambridge, and is correlated with the hook-like apophy-sis at the posterior angle of leg coxa I. Detail about its function was given by Grasshoff (1968: p. 48, fig. 44), When studying mating in Araneus diadematus Clerck, he observed the coxal hook entering the groove, in full agreement with the suggestions of F. O. Pickard-Cambridge. In this way legs II become stabilised.
机译：多年以来，雄性的第二性征已被用于分离蜘蛛类蜘蛛中的物种和物种组。在Simon（1929），Wiehle（1931）和Locket＆Millidge（1953）提供的按键和说明中，提到了前髋关节的钩和结节，以及胫骨I的cra行和刺和棘刺的存在。在许多物种中存在的另一个特征是在股骨II近端的股沟，这种情况很少见。然而，该凹槽早在1901年就被FO Pickard-Cambridge所描述，并在小腿尾部I的后角与钩状萎缩相关。有关其功能的详细信息由Grasshoff（1968：p。48）提供。 （图44），在Araneus diadematus Clerck研究交配时，他观察到尾钩进入凹槽，完全符合FO Pickard-Cambridge的建议。这样，腿II变得稳定。

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