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2008—2010年对杨白潜叶蛾(Leucoptera susinellaHerrich-Schaffer)生物学特性进行研究后发现,杨白潜叶蛾在河南省濮阳地区1a发生5代,代数比较整齐。以蛹茧主要在树干粗皮缝内、落叶等处越冬。翌年4月中旬越冬代成虫羽化,成虫羽化后当天即开始交尾产卵,每头雌蛾产卵26～78粒,产于杨树叶片正面,90%在侧脉旁。孵化后幼虫直接钻入叶片内潜食叶肉危害,被害处呈黑褐色虫斑,之后叶组织枯焦。幼虫老熟后有吐丝下垂习性。9月上中旬第5代老熟幼虫开始结茧化蛹并越冬。各虫态发育历期随季节变化差异较大。成虫具趋光性,♀♂比为1∶0.93。幼虫期天敌有寄生蜂3种,其中寄生率最高的一种为杨白潜叶蛾绒茧蜂(Apanteles SP)。
After studying the biological characteristics of Leucoptera susinella Herrich-Schaffer from 2008 to 2010, it was found that the generation of Lavena occidentalis larvae occurred in La generation in Puyang area of Henan Province for 5 generations and the algebra was relatively neat. The pupal cocoon mainly in the trunk thick bark, leaves and other places overwintering. In mid-April of next year, overwintering adult adults emerge, and adult worms begin to lay their eggs on the same day after emergence. Each female moth spawns from 26 to 78 eggs and is produced on the front of poplar leaves and 90% on the lateral veins. After hatching larvae directly into the leaves of the potential to eat leaf damage, the risk of dark brown spots, after the leaf tissue dead focus. After larvae have silky hang habit. The fifth generation of mature larvae in the middle of September began to cocoon pupation and overwintering. The developmental stages of the insect states vary greatly with the seasons. Adult with phototropism, ♀ ♂ ratio of 1:0.93. The larvae of natural enemies have 3 kinds of parasitoids, one of the highest parasitic rate of a white leafhopper (Apanteles SP).