黄地老虎警纹地老虎的区别

黄地老虎警纹地老虎的区别

黄地老虎初产乳白色,半球形,直径0.5mm,卵壳表面有纵脊纹,以后渐现淡红色玻纹,孵化前变为黑色。幼虫与小地老虎相似,其区别为:老熟幼虫体长33~43毫米,体黄褐色,体表颗粒不明显,有光泽,多皱纹。腹部背面各节有4个毛片,前方2个与后方2个大小相似。臀板中央有黄色纵纹,两侧各有1个黄褐色大斑。腹足趾钩12~21个。蛹体长16~19毫米,红褐色,腹部末节有臀剌1对,腹部背面第5~7节刻点小而多。

黄地老虎警纹地老虎的区别

警纹地老虎体长约16mm~18mm,翅展36mm~38mm,体灰色,头部、胸部灰色微褐,颈板具黑纹1条,颈板灰褐色,雌虫触角线状,雄虫双彬状,分枝短。前翅灰色至灰褐色,有的前翅前缘、前翅外缘略显紫红色;横线多不明显,内横线暗褐色,波浪形,剑纹黑色,肾形纹大,黑边棕褐色,环形斑、棒形斑十分明显,尤其是棒形斑粗且长,黑色,较易辨别。后翅色浅,白色,微带褐色,前m缘浅褐色。

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