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Fall species (longipes and slossonae)

March Fly - Bibio - male Fly - Bibio - male March Fly - Bibio slossonae - male March Fly - Bibio slossonae - male small fly? - Bibio - male Fly - Bibio - male Insect - Bibio longipes - male - female Bibionomorpha ? - Bibio - male
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)
Identification
All but three North American species of Bibio fly in the spring and early summer. B. longipes and B. slossonae are the common fall-flying species. Males are all black and have swollen hind tarsi. Males are distinguished by color of body hair (pale in longipes, dark in slossonae). Females are distinguished by color of thorax.
Season
Fall