白杨透翅蛾分布很广,在江苏和北方各省区均有发生,以华北、东北地区最重。幼虫为害各种杨柳树的树干和顶芽。由顶芽蛀入时,被害处枯萎下垂,形成秃梢。为害树干时,多由叶丫儿处蛀入,使叶子枯萎,然后围绕树干蛀道为害,致使被害处形成瘤状虫瘿,最后蛀入髓部为害,因此,极易被风折断。 Poplar moths are widely distributed in Jiangsu and northern provinces have occurred, with North China and Northeast China the heaviest. Larvae damage various willow tree trunks and top buds. When the top bud borers, the victims withered and drooped to form bald patches. Damaged tree trunks, mostly by the leaves of the child bored in, leaving the leaves withered, and then around the trunk tunnel damage, resulting in the formation of nodular nocturnal damage, and finally bore into the pulp damage, therefore, easily broken by the wind.