Bibio marci

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, 25 April.

Bibio marci

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, 25 April.