Spiders, mites, etc. come under the head of Arachnida.

蜘蛛 、 螨等归入蛛形纲.

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Arachnida and Cecidomyidae had a higher relative abundance than other families being 0.3465 and 0.2309, respectively.

蜘蛛类的相对丰盛度最高,为0.3465,瘿蚊科的相对丰盛度为0.2309, 二者在群落中所占比例较高.

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The energy content and their seasonal variations of Arachnida in arid environment were studied.

研究干旱地区蛛形纲动物的含能值变动规律.

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A pincer like claw of a crustacean or an arachnida lobster , crab , or scorpion.

无毒的蜘蛛类节肢动物,形似蝎子,尾巴细长而无毒刺.

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