Fairyflies are too tiny to see. The smallest fairyfly is 0.16mm (3/500 in) long, and would easily fit inside the full stop at the end of this sentence. They usually have nonmetallic black, brown, or yellow bodies. The antennae of the females are distinctively tipped by club-like segments, while male antennae are thread-like. Their wings are usually slender and possess long bristles, giving them a hairy or feathery appearance, although some species may have greatly reduced stubby wings or lack wings altogether. They can be distinguished from other chalcid wasps by the H-shaped pattern of sutures on the front of their heads.
Fairyflies are some of the most common chalcid wasps, but are rarely noticed by humans because of their extremely small sizes. Their adult lifespan are very short, usually lasting for only a few days.
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