美国白蛾[Hyphantria Cunea(Drury)]属国际重点检疫对象。原产于北美,四十年代,传入欧洲和亚州,并蔓延成灾。目前,已知分布在奥地利、保加利亚、匈牙利、罗马尼亚、捷克斯洛伐克、南斯拉夫、朝鲜半岛、日本诸岛;法国的波尔多市及中国的辽宁、山东、陕西等几十个国家和地区。至今尚未见在某一地区被消灭的报导。相反,从收集到的疫情资料看,美国白蛾仍在蔓延扩展,因此 Hyphantria Cunea (Drury) is an international priority quarantine object. Originated in North America, the forties, spread to Europe and Asia, and spread disaster. Currently, there are dozens of countries and regions in Austria, Bulgaria, Hungary, Romania, Czechoslovakia, Yugoslavia, the Korean Peninsula, the Japanese islands, France’s Bordeaux and China’s Liaoning, Shandong and Shaanxi. So far no one has been annihilated in one area. On the contrary, from the collected epidemic data, the American white moth is still spreading and expanding, therefore