However, some parasitic wasps, such as Copidosoma spp. Most parasitic species have high reproductive capacity and develop rapidly. Several generations can sometimes develop during a single generation of the host, although some species have only a single generation per year. Mouthparts of larvae and adults are for chewing. Those that kill their hosts are called parasitoids.
Many species are host specific, developing in one or a limited number of related host species.
Adults of some parasitic wasps feed on other insects to obtain energy to seek other suitable hosts into or on which to lay eggs. This behavior is called host feeding and also helps reduce populations of host insects. Parasitic wasps may emerge from host insects if they are reared. A number of parasitic wasp species are commercially available from insectaries and are purchased and released in augmentative biological control programs. None, this is a beneficial insect.