狼蛛的外形特征

2025-04-07 11:43:31
推荐回答(2个)
回答1:

狼蛛的背上长着像狼毫一样的毛,而且有八个眼睛,有的狼蛛毒性很大,能毒死只麻雀,大的狼蛛甚至能毒死一个人。
8眼黑色,排成三列,从眼的排列可以鉴别︰前列4个小眼,中列2眼大,后列2眼小或中等大。步足粗壮,多刺,末端为 3爪。因善跑、能跳、行动敏捷、性凶猛而得名。全球1500余种。体中、小型长 3~25毫米。多数徘徊游猎,少数结网。在地面、田埂、沟边、农田和植株上活动。静息时隐藏在石下或土缝中,有的种类穴居。通常日间出来觅食,在温暖地区也夜出觅食。捕食量大,是农田中重要的害虫天敌。
狼蛛科卵袋球形或扁球形,其由两片半球形丝膜合成,两片边缘为用丝缝合。卵袋携带在母蛛末端纺器上 (见图带卵袋的狼蛛)。如把卵袋移下,母蛛找到后再挂在纺器上。如果除去,它提前产第2个卵袋,也有的把树皮、纸片或螺壳挂在纺器上作为替代。幼蛛孵出后,爬上母蛛腹部的背面,约3~7天后,才离开母体营独立生活。
常见的有狼蛛、水狼蛛、豹蛛和獾蛛。水狼蛛多见于水田或河边。豹蛛属的拟环豹蛛为中国水田中的优势种,食虫量大,在消灭害虫中起重要作用。分布于新疆的穴居狼蛛毒性大,对人畜有危害。

回答2:

纤麟绣糖鼻毕嫩射断囊蛊蛊一翻事

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