1发生与危害情况银杏大蚕蛾（Dictyoplocajaponica）Moore）属鳞翅目大蚕蛾科，是主要危害核桃揪的暴发性食叶害虫。1994年以来在湾沟林区相继发生，以1996年最为严重，全局大面积核桃揪林被害（在发生严重的马鹿沟林场发现械树、色树、椴树、柳树等也被害），树叶被食光，几天 1 Occurrence and damage Dictyoplocajaponica Moore) is a large Lepidoptera moth family, is the main endangered Walnut pullovers outbreak leafworm. Since 1994, there have been successively occurred in Wangou Forest Area. In 1996, the most serious and large-scale walnut jungle was destroyed in the whole area (trees, color trees, lime trees and willow trees were also found in the serious Maluson Forest Farm), leaves To be light, a few days