近些年来,杜仲林内发现一种食叶害虫。1979～1981年间,我场1075亩杜仲林受其危害,其中400余亩树叶全被吃光,严重地影响了杜仲树的正常生长和叶片产量,减少了经济收入。近年,我场各林区还有不同程度的发生。据了解,湖南慈利江垭林场的杜仲林内也有此虫发生。为了探索此虫的特性和发生发展规律以及有效的防治措施,我们于1984～1986 In recent years, Euphorbia Lin found a leaf-feeding pests. From 1979 to 1981, 1075 mu of Eucommia forest in our farm was harmed by it. Among them, more than 400 acres of leaves were eaten, which seriously affected the normal growth and leaf yield of Eucommia ulmoides and reduced the economic income. In recent years, various forest areas in our farm have different degrees of occurrence. It is understood that Hunan Cili Jiangyu forest Du Zhonglin also have this pest. In order to explore the pest characteristics and occurrence and development of the law and effective prevention and control measures, we in 1984 ~ 1986