St. Mark's Fly
Bibio marci
The adult is a dark, long-legged fly often seen in spring around hedgerows, grassland, woodland edges, and gardens. It feeds lightly on nectar and other sugary fluids, while males are especially noticeable as they drift through the air with dangling legs. Adults are harmless and do not bite, relying on flight and quick escape rather than weapons. The common name comes from its traditional emergence around St. Mark's Day in late April.
- Type
- Wing
- Conservation status
- NE
Growth chain
- ?
- ?
- St. Mark's Fly