Diptera: Flies - Alex Wild Photography
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Anthomyiidae

Anthomyiidae

A side view of a root-maggot fly shows its right haltere, a flight balancing organ. The haltere is a knob-like structure adapted from an ancestral hind wing that vibrates during flight. It is thought to work like a gyroscope. Urbana, Illinois USA.

AnthomyiidaeDipteraFlyHalteres