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Species Bibio longipes

Male March Fly - Bibio longipes - male March Fly - Bibio longipes - female March Fly - Bibio longipes - female March Fly - Bibio longipes - male March Fly - Bibio longipes - female Bibio longipes Bibionidae - Bibio longipes - male Outside on a window - Bibio longipes - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Nematocera" (Non-Brachycera))
Infraorder Bibionomorpha (Gnats, Gall Midges, and March Flies)
Family Bibionidae (March Flies)
Genus Bibio
No Taxon (Fall species (longipes and slossonae))
Species longipes (Bibio longipes)
Synonyms and other taxonomic changes
Bibio longipes Loew 1864
Bibio lepidus Loew, 1871
Identification
Males are all black with swollen hind tarsi and are hard to distinguish from Bibio slossonae, the other common fall-flying species. Females are distinguished by their reddish color.
Range
East of Rockies, southern Canada, and central to northern United States; also widespread in Europe where it was known as Bibio lepidus
Season
Fall
Remarks
Large swarms consisting of males are common in the fall.