Eristalis dimidiata, the black-shouldered drone fly, is a species of hoverfly native to much of Canada and the eastern and northern United States.

[1][2][3][4][5] It flies year-round in southern areas and from late March to mid-November further north.

[5] It is one of the earliest hoverflies to fly in the spring, and as such likely overwinters as an adult.

[5] Hoverflies get their names from the ability to remain nearly motionless while in flight.

[6] Overall, much of the fly is black, though the wings are mostly transparent and the posterior margins of the abdominal segments are white.