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Genus Bibio

hairy black fly - Bibio March Fly - Bibio - male Fly - Bibio - male Bibionidae: March Fly - Bibio albipennis ID for Bibionid in California ? - Bibio albipennis - male UID INSECT - Bibio ID help please - Bibio femoratus - male red-legged fly - Bibio - male
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Nematocera" (Non-Brachycera))
Infraorder Bibionomorpha
Family Bibionidae (March Flies)
Genus Bibio
Numbers
Nearctica lists 53 species.
Identification
See comments here for Paul Beuk's take on genus identification.

Wing venation:
Food
Larvae are scavengers on roots and decaying plant material.
Internet References