平纹古毒蛾(Orgyia Parallela Gacede)属鳞翅目毒蛾科。在陕西、甘肃及四川省的郫县、新都、新津、广汉、温江、灌县等地均有分布。主要危害法国梧桐,亦危害重阳木。近两年灌县城关及成灌公路两旁的法国梧桐受害株率达90％,严重的达100％,叶片受害,仅留叶脉。同时幼虫吐丝下垂,到处爬行,飘迁,不仅影响树木生长和市容美观,而且毒毛还危及人体安全。笔者于1981年至1983年在灌县进行了初步观察研究,现将初步结果分述于后。 Orgyia Parallela Gacede belongs to Lepidoptera. In Shaanxi, Gansu and Sichuan Province, Lixian, Xindu, Xinjin, Guanghan, Wenjiang, Guan County and other places are distributed. Mainly harm the Indus, but also endanger the Chongyang wood. In the past two years, Guan County Chengguan and Cheng Ir highway on both sides of the Sycamore-affected strain rate of 90%, a serious up to 100%, leaves suffer, leaving only the veins. At the same time larvae shed silk, crawling around, drift, not only affect the growth of trees and beautiful appearance, but also toxin also endanger human security. The author conducted a preliminary observation and study in Guan County from 1981 to 1983, and now the preliminary results are summarized in the later.