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榆斑蛾(Iuiberis ulrmivora Graeser)又称榆星毛虫,属鳞翅目斑蛾科,是榆树重要食叶害虫。国内已知北京、河南、河北、山东、山西均有分布。据初步调查,我省主要分布于忻县地区的定襄、原平、代县、繁峙、五台等地,雁北、晋中、晋东南亦有发生。关于该虫的危害、习性及天敌,国内尚未见详细报道。现将80—81年在忻县、定襄对该虫的初步观察介绍如下:一、为害情况七十年代初,榆斑蛾在忻定盆地零星发生,尚未造成灾害。但近几年来,该地连年发生,危害日趋严重,范围逐年扩展,大部分榆叶被其幼虫吃成光秃。据定襄县林业
Ulmus moth (Iuiberis ulrmivora Graeser), also known as Ulmus caterpillars, is a Lepidoptera moth family, is an important leaf-eating insects elm. Domestic known Beijing, Henan, Hebei, Shandong, Shanxi are distributed. According to the preliminary investigation, the province mainly distributes in Dingxiang, Yuanping, Daixian, Fanzhi and Wutai of Xinxian area, and Yanbei, Jinzhong and southeast of Shanxi also occur. About the pest of the harm, habits and natural enemies, no detailed report yet. Now 80-81 years in Xin County, Dingxiang Preliminary observations of the pest introduction is as follows: First, the damage situation In the early seventies, Ulmus moth in the Xinding Basin sporadic occurrence, has not caused disasters. However, in recent years, the occurrence of the disease year after year, the increasingly serious harm, the scope of the annual expansion of most of the elm leaves were eaten by their larvae bare. According to Dingxiang County Forestry