Bibio marci

Bibio marci or St. Mark's fly or hawthorn fly,^[1] is a species of fly from the family Bibionidae. It is found across much of Europe.^[2] Their common name comes from the fact that the adults usually emerge around St Mark's Day, 25 April.

Bibio marci
Male B. marci
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Diptera
Family:	Bibionidae
Genus:	Bibio
Species:	B. marci
Binomial name
Bibio marci (Linnaeus, 1758)
Synonyms
Bibio funerosus (Harris, 1780) Pullata funerosus Harris, 1780 Tipula marci Linnaeus, 1758

Biology

Like most bibionid larvae, they grow up in grassy areas and are herbivores and scavengers feeding on dead vegetation or living plant roots. Bibio marci larvae are known to be root damage pests of celery, asparagus, roses, saxifrages, lawn grass, lettuce and Polyanthus. They also feed on a very large number of plant species that are commercially unimportant.^[3]