The Chalcis fly, also known as Chalcidian flies, belongs to the family Chalcididae. These insects are parasitic and belong to the order Hymenoptera. Synonyms for the Chalcis fly include cuckoo wasps, jewel wasps, and parasitic wasps. The Chalcis fly belongs to a group of insects that are considered valuable in the field of pest control as they feed on the larvae of many different insect species. These insects are tiny, measuring only a few millimeters in length, and their parasitic nature makes them difficult to control. Despite their small size, they play a vital role in maintaining ecological balance and are an important part of the natural world.