白杨透翅蛾、青杨天牛和杨干象(虫甲)是国内检疫性的蛀干害虫。常在速生丰产林、农田防护林、四旁绿化树木及苗圃杨树大苗上发生,使干、枝形成肿瘤状虫瘿或“大骨节”,易风折,树木常“断臂”、“折腰”、“掉头”,影响成材。因此,根据这三种蛀干害虫的习性及危害特点,采取相应的防治措施是非常必要的。白杨透翅蛾一年一代,以幼虫在枝干隧道内越冬。次年4月初开始取食活动,5月上旬化蛹,6～7月羽化成虫。初孵幼虫由嫩枝叶 Poplar moths, Poplar and Yang dry elephant (pest) is a domestic quarantine boring pests. Often in fast-growing and high-yielding forests, farmland shelterbelts, green trees and nurseries around the poplar seedlings occur, so that the stems, the formation of tumor-like swollen nodules or “big bones Festival”, easy to wind off trees often “broken arm” “U-turn”, affecting the timber. Therefore, according to the habit of three kinds of borer pests and the characteristics of hazards, it is necessary to take appropriate control measures. Poplar through the moths one generation, with larvae in the branches of the tunnel through the winter. The following year the beginning of feeding in early April, early pupation in May, 6 ~ July eclosion adult. The newly hatched larvae are made of young shoots