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锐剑纹夜蛾是食叶性害虫。近年来,在定边县各机关、学校及街道的树木上不断猖獗发生,很多阔叶树种均受其害。常使整个街道大小树木枝枯叶尽,状似火烧,对城镇绿化及园林建设威胁很大。这一害虫国内仅有种的形态记述,对其生活史、生活习性及防治方法未见报道。我们于1982年对该虫的生物习性进行了观察,并进行了大面积防治,取得了良好效果。一、名称及分布锐剑纹夜蛾:Acronycta aceris Linna-eus.主要分布我省定边县及宁夏、内蒙古、甘肃、新疆等地。二、寄主植物及为害情况该虫主要为害旱柳、箭杆杨、合作杨。其次为小叶杨、白蜡、榆、苹果等。初龄幼虫啃食叶肉,2龄开始由叶缘取食,造成缺刻,3龄前期不吃侧脉,后期可吃侧脉顶端,4龄、5龄取食量不断增大,
Sesamia is a leaf-eating pest. In recent years, Dingbian County authorities, schools and streets continue to rampant trees, many broad-leaved trees are harmed. Often the entire street tree branches dead leaves, like a fire, the town greening and landscape construction is a big threat. This species of pests only species description of the country, its life history, habits and methods of prevention and control has not been reported. We observed the insect’s biological behavior in 1982 and carried out large-scale prevention and treatment with good results. First, the name and distribution Rui swordworm: Acronycta aceris Linna-eus. Mainly distributed in our province Dingbian and Ningxia, Inner Mongolia, Gansu, Xinjiang and other places. Second, the host plant and the pest damage The insect infestation willow, Arrow Yang, Yang cooperation. Followed by poplar, white wax, elm, apple and so on. The first instar larvae gnaw on the mesophyll, and the second instar larvae fed on the leaf margin, resulting in nicks. The third instar larvae did not eat the lateral veins,