我国新发现一种重要外来入侵害虫——刺槐叶瘿蚊

在我国首次发现了一种新的重要外来入侵害虫——刺槐叶瘿蚊Obolodiplosis robiniae (Haldemann)。该害虫原产北美洲东部，危害刺槐叶片。其危害特征十分明显：一般是3～8头幼虫群集危害，在刺槐叶片背面沿叶缘形成纵向卷曲的虫瘿，隐藏其中取食。在我国河北省秦皇岛市、辽宁省一些地区刺槐树的受害率近100％，严重影响刺槐的健康生长，进而引起次期性害虫的发生和危害，造成刺槐死亡。因此，该害虫对我国大面积栽培的刺槐林的生态、经济以及社会效益的发挥造成重大威胁。必须提高警惕，加强检疫，防止其扩散蔓延，并开展防治研究。

First discovery of an important invasive insect pest, Obolodiplosis robiniae (Diptera: Cecidomyiidae) in China

An important invasive insect pest,locust gall midge Obolodiplosis robiniae(Haldemann)(Diptera:Cecidomyiidae),was newly discovered from China.Native to North America,this species attacks leaf of black locust tree,Robinia pseudoacacia L.As one characteristic of infestation,its larvae(usually 3-8 individuals)gregariously feed inside the longitudinal rolling gall along the edges of leaf.In Qinhuangdao City of Hebei Province and Jinzhou,Anshan,Huludao and Chaoyang cities of Liaoning Province,its attacking rate on black locust trees were about 100%.The pest threats the health of R.pseudoacacia which has been planted in large areas in China.Strict quarantine,study on its biology and control measures are necessary in order to block its spread and damages.