天敌是影响害虫数量变动的重要因素,对控制害虫的大发生起着显著作用。今后如何发挥天敌昆虫的治虫作用,首先必须认识它,了解它。这就需要采集、饲养它,以达利用天敌昆虫消灭害虫,为生产服务之目的。害虫的寄生性天敌的寄生习性是比较复杂的。有些种类专门寄生于虫卵,如:赤眼蜂、平腹小蜂、黑卵峰等统称为卵寄生;有些专门寄生于幼虫,如:红头小茧蜂、两色瘦姬蜂寄生于松毛虫的幼虫,金小蜂寄生于红铃虫等,这些称之为幼虫寄生;也有些种类资生于蛹或 Natural enemies are important factors that affect the number of pests and play a significant role in controlling pests. How to play a natural insect pest control role in the future, we must first understand it, understand it. This requires the collection, keeping it, in order to use natural enemy insects to eliminate pests, for the purpose of production and service. Parasitic habits of pests Parasitic habits are more complicated. Some species are specifically parasitic on eggs, such as: Trichogramma, Aplysia, Black Egg and other collectively referred to as egg parasites; some specialized parasitic on larvae, such as: red cocoon bee, Of the larvae, the golden bee parasitic on the pink bollworm, etc., these are called larvae parasites; also some species are born pupae or