李实蜂属膜翅目,叶蜂科,近几年已成为廊坊市区李树的主要害虫。李实蜂以幼虫蛀入幼果,食害果核,果核被食空后,食害果肉,果内堆积着虫粪,造成幼果停止生长,大量脱落。严重的园片,虫果率达90％以上,造成绝产绝收。为此,我们从1995～1996年对其发生规律及防治工作,进行了研究,取得了良好的效果。 Hymenoptera Hymenoptera, Lepidoptera, in recent years has become a major pest in Langfang urban Li. Li wasp larvae eroded young fruit, eating fruit nuclear, the fruit is empty after eating empty, eating fruit pulp, fruit piles of insect excrement, causing the young fruit to stop growing, a lot of fall off. Serious disk, fruit rate of 90% or more, resulting in absolutely not yield. Therefore, from 1995 to 1996, we conducted a study on its occurrence and prevention and control and achieved good results.