有许多昆虫在未成熟时期,寄生在无脊椎动物体内,成虫羽化后即离开寄主,并使寄主遭到破坏与死亡,这些昆虫叫寄生昆虫.其中包括绝大多数的膜翅目和双翅目寄蝇科的昆虫.利用这些寄生昆虫防治害虫,可以取得良好的灭虫效果.寄生昆虫羽化后,往往飞离原来的寄主种群,到另一地方重新寻找自己的寄主种群并进行繁殖.选择寄主的过程,最近认为要经过五个步骤:(1)寄主生境的勘测;(2)寄主勘测;(3)寄主的接受;(4)适宜的寄主;(5)寄主的管制.寄生昆虫选择寄主的过程一般只经过2-3个步骤,或者更多一些其他的步骤完成.头三个步骤常常结合起来进行.根据 Many insects are parasitized in invertebrates during immature periods and leave the host after the emergence of adults and damage and death of the host insects, including parasitic insects, including the vast majority of Hymenoptera and Diptera To send Muscidae insects.Using these parasitic insects pest control can get good pest control effect.Parasitic insects are prone to fly away from the original host population to another place to find their own host population and breeding.Selecting host Recently came under the following five steps: (1) survey of host habitat; (2) host survey; (3) host acceptance; (4) appropriate host; (5) host control. Parasitic Insects Select host The process is generally only after 2-3 steps, or some other steps to complete the first three steps are often combined. According to