Chrysops niger

Chrysops niger, the black deer fly, is a fly of about 8–10.5 millimetres (0.31–0.41 in) length, with a mostly black body with some white hairs, and having wings which are barred with black. They are active from May to September around areas of marsh.^[3][4]

Chrysops niger
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Diptera
Family:	Tabanidae
Tribe:	Chrysopsini
Genus:	Chrysops
Species:	C. niger
Binomial name
Chrysops niger Macquart, 1838[1]
Synonyms
Chrysops niger var taylori Philip, 1955[2]

The larvae of the black deer fly feed upon organic matter in damp soil, and are termed hydrobionts in that they inhabit areas of high water content.

Distribution

Eastern United States and Canada.