Insect parasites are organisms that live on or inside insects, deriving nutrients at the host's expense. These parasites can be bacteria, fungi, or other insects, and they often harm their hosts, leading to weakened health or even death. Common examples include wasps that lay eggs inside caterpillars and fungi that infect and kill ants. The relationship between insect parasites and their hosts is a form of parasitism, where one organism benefits while the other suffers. This interaction plays a significant role in controlling insect populations and maintaining ecological balance. Understanding these relationships helps in managing pests in agriculture and protecting beneficial insect species.