青杨虎天牛Xylotrechus rusticus(L).是杨柳的重要蛀干害虫,在东北地区都有分布。近年来沈阳市的防护林和街道等地发生和为害相当严重,其幼虫常数头、数十头在韧皮部木质部之间钻蛀为害,使健康植株的生长势逐渐衰弱,枝梢枯萎,十余年生的杨、柳树由于连续几年被害,整主干的树皮从干基向上大块剥离,致使整株树木枯死,是一种危险性的害虫。作者于1977—1978年对此虫进行了初步观察和研究。 Xylotrechus rusticus (L.), an important borer pest of willow, is distributed in the northeastern region. In recent years, shelterbelts and streets in Shenyang City, such as occurred and the damage is quite serious, the larvae constant head, dozens of phloem xylem boring damage, the growth potential of healthy plants gradually weakened, shoots withered, more than ten years of life Yang, willow trees were killed for several years, the entire trunk of the bark from the dry-based large peel off, resulting in dead trees, is a dangerous pest. The author conducted a preliminary observation and study of this pest in 1977-1978.