Abstract
Acroceridae is a small group of flies with about 520 described species and 51 genera. The species occur in all Biogeographycal Regions and are especially abundant in tropical areas. The larvae are spiders endoparasitoids and the adults of some species are flower visitors, while others have underdeveloped or even absent mouthparts and do not feed. Acroceridae comprises three subfamilies: A…