Empidinae

Empidinae, also called dance flies, are a subfamily of empidoid flies. They belong to the Eremoneura, a lineage of flies whose larvae pass through three stages. The name “dance flies” comes from their mating swarms, formed by males or, in some species, by females; in many cases males present captured prey to females during these gatherings. They are mainly predatory flies like most of their relatives, and generally small to medium-sized. Most species are flower visitors and they can be effective pollinators.