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Other Bibio species are broadly similar, though B. marci is larger than most and has a black front edge to its wings.
Hedgerows and woodland edge, often in moist areas.
Named after St. Marks day, 25th April, when they appear with amazing regularity. April - June.
When airborne, they fly in a sluggish manner above hedgerows and grass, with their long legs dangling down. The larvae feed on grass roots, leaf mould and decaying matter.
Common and widespread in Britain.
Common in Leicestershire and Rutland
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