Some insects develop as predators of other insects.
Developing insect predators actively hunt and feed on several other insects as prey. Adult stages also may be predators, although some, such as green lacewings and flower flies, feed on pollen. Other insects develop as parasites of pests. Usually, these are flies or wasps that lay eggs on certain kinds of insects. Their young usually feed inside the insect host, killing it and emerging in the adult parasite form.