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词汇 subtegulum
分类 英语词汇 英语翻译词典
释义

subtegulum

英汉-汉英词典
亚盾片
词组 | 习惯用语
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  • sabbatical adj. 休假的;公休的 n. 学术休假
  • subtropical adj. 亚热带的
  • subtest n. 子测验(程序教学用语)

网络短语:
subtegulum 亚盾片
英语百科

Palpal bulb

Male Cheiracanthium mildei showing the enlarged and darker palpal bulbs at the end of the pedipalps
Left palpal bulb of a male Thaida chepu: 1 – from the right (side nearest the mouth); 2 – from the underside; 3 – from the left (side away from the mouth)bH – basal hematodocha; Cb – cymbium; E – embolus; HSt – hook of subtegulum; mA – median apophysis; mH – median hematodocha; PSt – process of subtegulum; St – subtegulum; Te – tegulumSee text for further explanation.
Simple palpal bulb of Unicorn catleyi, a member of the Haplogynae group of spiders

The two palpal bulbs or palpal organs are the copulatory organs of a male spider. They are borne on the last segment of the pedipalps (the front "limbs" of a spider), giving the spider an appearance often described as like wearing boxing gloves. The palpal bulb does not actually produce sperm, being used only to transfer it to the female. Palpal bulbs are only fully developed in adult male spiders and are not completely visible until after the final moult. In the majority of species of spider, the bulbs have complex shapes and are important in identification.

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