草地贪夜蛾与西藏3种近缘种的比较

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草地贪夜蛾Spodoptera frugiperda是一种全球重大迁飞性害虫,于2019年首次入侵我国.在西藏自治区调查草地贪夜蛾发生范围及危害情况过程中,容易将草地贪夜蛾与黏虫、棉铃虫、斜纹夜蛾等夜蛾科近缘种相混淆.为了区分草地贪夜蛾及其他夜蛾科近缘种,从寄主植物、危害状、幼虫特征和成虫特征比较了 4种夜蛾科害虫,并结合资料进行对比区分,综合分析草地贪夜蛾与其他3种鳞翅目害虫的区别,总结了草地贪夜蛾的关键特征,结果显示4种害虫在幼虫时期特征较为明显,容易区分,建议从幼虫时期进行区分.
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