美国白蛾,又名秋幕毛虫,(Hyphantria cunea Drury),属于鳞翅目灯蛾科。美国白蛾传入我省以后,发生面积逐年扩大,为害程度逐渐加重,已引起国内的高度重视。为了摸清美国白蛾的生物学特性,给防治提供科学依据,我们于1980～1981年分别进行了室内饲养观察和室外定点观察,现将结果初报如下。 American white moth, also known as fall curtain caterpillar, (Hyphantria cunea Drury), belonging to the Lepidoptera moth family. Since the introduction of the American white moth into our province, the area has expanded year by year, and the degree of harm has gradually increased. This has drawn great attention in China. In order to find out the biological characteristics of the American white moth, to provide a scientific basis for prevention and treatment, we were conducted in 1980 ~ 1981 indoor feeding observation and outdoor fixed-point observation, the results are as follows.