Bilalidae

Bilalidae is a taxonomic family of insects in the order Diptera, commonly known as bee flies. These flies are characterized by their resemblance to bees and their fuzzy bodies, which often exhibit black and yellow or brown banding patterns. This mimicry serves as a defense mechanism, deterring predators that might otherwise mistake them for stinging insects. Bilalidae are distributed worldwide, with a particular abundance in arid and semi-arid regions.

The life cycle of Bilalidae typically involves a predatory larval stage. The adult females lay their eggs near the nests of other insects, primarily solitary bees and wasps. Upon hatching, the larvae enter the host nest and feed on the host's eggs, larvae, or stored food. This parasitic relationship is a key ecological feature of the Bilalidae family. Adult bee flies, in contrast to their larvae, are often nectar feeders and play a role as pollinators. Their proboscis, adapted for feeding on nectar, can be quite elongated in some species. While generally harmless to humans, some species may exhibit a defensive buzzing sound. The classification of Bilalidae is part of the broader superfamily Asiloidea, which includes other predatory flies.