杨扇舟蛾 Clostera anachoreta（fabricius）是杨树食叶害虫中分布广泛、发生面积大、危害濒繁、蔓延迅速的虫种，常爆发成灾，在短期内吃光叶片，对树木生长影响极大。近年来．在山东发生面积常高达百余万亩，造成巨大的经济损失。为更好地利用天敌防治该虫，笔者于1998年～ 2 Clostera anachoreta (Fabricius) is a kind of insects widely distributed in Populus euphratica and its occurrence area is large and endangered. It is often exploded and eaten in the short term, which has a great impact on tree growth . In recent years. Occur in Shandong often up to more than 100 acres, resulting in huge economic losses. In order to make better use of natural enemies to control the insects, the author in 1998 ~ 2