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黄杨绢野螟Diaphania perspectalis(Walker)在鲁中地区一年发生1—3代,以3龄初幼虫于受害树枝端吐丝紧密粘合两片叶在内休眠,越冬。第1代和第2代各有1/3数量的3龄幼虫进入越夏、越冬休眠状态,其余2/3幼虫继续发育成为第2代或第3代。每年春季4月是该虫危害高峰期。
Diaphania perspectalis (Walker) occurs in 1-3 generations a year in Luzhong area, and the larvae of the third instar lay dormancy and wintering when they are intimately bound to two leaves by the first instar larvae. The third and the third generation larvae in the first generation and the second generation each entered the summer, the winter dormancy, and the remaining two thirds larvae continue to develop into the second or third generation. April each spring is the pest damaging peak.