Most elms in Dingxiang county of Shanxi province have been damagend by Pyrrhalta aenescens,whose year cycle,life habit,and control methods are introduced briefly in this paper.

• 山西省定襄县的榆树大多受榆兰金花虫危害 ,该文简要介绍了榆兰金花虫在定襄的年生活史、生活习性及防治办法