大袋蛾Crypthelea variegata Snellen,俗名布袋虫,属鳞翅目,袋蛾科,是我国主要林业害虫之一。在我省主要危害泡桐、法桐、刺槐等林木,亦可加害大豆、棉花等农作物,华北中原地区近年尤为猖獗,有无烟森林火灾之称。该虫在河南1年发生1代,以老熟幼虫悬挂于枝条上越冬。 据过去资料记载,大袋蛾幼虫为5个龄级。1988～1990年采用定虫和群体观察相结合的方法在泡桐或 Crypthelea variegata Snellen, commonly known as bagworm, Lepidoptera, Lepidoptera, is one of the major forestry pests in our country. In our province, the main hazards of Paulownia, Fatong, black locust and other trees, but also damage soybeans, cotton and other crops, especially in Central China in recent years, the Central Plains region is rampant, with smoke-free forest fire known. The insects occurred in Henan 1 year generation 1, with mature larvae hung on the branches overwintering. According to the past records, large bag moth larvae 5 age class. From 1988 to 1990, the method of combining insecticide and population observation was used in paulownia or