True Fly (Diptera)
This is a large order of insects which amount to almost 100,000 species. They are distinguished from other flying insects in that the rear wings have been reduced to pin sized structures called halteres which help the fly maintain balance and stability in flight.
The resulting single pair of wings gives this order its name – Diptera (Two wings). A few species (mainly ectoparasites) in this order have lost their wings altogether
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