Milesia is a genus of very large hoverflies, which mimic social wasps. For example, the European species Milesia crabroniformis is a convincing mimic of the hornet species Vespa crabro. Milesia are predominantly Palaeotropical in distribution almost entirely Oriental.

The Larvae are of the short-tailed type, found in decaying heartwood of deciduous trees, including rot-holes.

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