The Family Chalcidae, commonly known as chalcid wasps, is a diverse group of parasitic wasps that are found worldwide. With over 23,000 described species, the Chalcidae family is one of the largest groups of parasitoid wasps. These wasps play an important role in controlling pest populations and are often used in biological control strategies. Some synonyms for the Family Chalcidae include the Chalcidoid wasps and Chalcids. These terms are frequently used interchangeably to describe the wasps in this family. While chalcids are tiny, they are a highly successful group of insects and play an important role in ecological balance.