"Bibio marci" or St. Mark's fly is a fly from the family Bibionidae. Their common name comes from the fact that the adults usually emerge around St Mark's Day, 25th April.
Similar species: True Flies
By Joost Thissen
Attribution Non-Commercial No Derivatives
Uploaded May 16, 2013. Captured May 4, 2013 11:14 in A67, 5646 Eindhoven, The Netherlands.
