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美国白蛾原分布于北美洲,1979年侵入辽宁的丹东、新金,现已波及山东、河北、陕西、天津等地扩散成灾。这是一种典型的生态入侵现象。美国白蛾食性杂、食量大、繁殖强、传播快,物理和化学防治方法收效甚微。我国科学家发现了周氏啮小蜂是一种幼虫可以寄生在美国白蛾蛹内的寄生蜂,发明了快速繁殖周氏啮小蜂的方法并用于防治美国白蛾。在一些地区利用这种寄生蜂防治美国白蛾取得一定成功。
The American white moth was originally distributed in North America. In 1979, Dandong and Xinjin, which invaded Liaoning, have spread to Shandong, Hebei, Shaanxi and Tianjin. This is a typical ecological invasion phenomenon. American white moth feeding complex, large food intake, strong propagation, rapid transmission, physical and chemical control methods with little success. Chinese scientists found that the small zebra is a larvae parasitic wasp parasitoid in the United States white moth pupae, invented the method of rapid propagation of small zebra wasp and used to control the American white moth. In some areas the use of such parasitic bees to control American white moths achieved some success.