榆兰金花虫Galerucella aenescensFairm,又名榆绿叶甲,是榆树的主要食叶害虫。分布于东北、华北、西北、河南、山东等省区。近年来在部分省区发生极为猖獗,严重地影响了榆树的生长。为更有力地指导防治,在现有资料的基础上,我们于1981、1982两年对其发生规律进行了研究,现将结果报道如下。 Ulmus Galerucella aenescensFairm, also known as Ulmus, is the main leaf-eating insects elm. Distributed in the northeast, north, northwest, Henan, Shandong and other provinces. In recent years, the occurrence of some provinces and autonomous regions is extremely rampant, seriously affecting the growth of elm trees. In order to guide the prevention and treatment more forcefully, on the basis of the existing information, we conducted a study on its occurrence in 1981 and 1982, and the results are reported below.