Identification
wing with leading edge darkened and with cell dm always clear; face yellow with median black line; abdomen black, constricted basally, swollen/widened apically with pointed tip and three equally-spaced white spots along each side (see link to images in Internet References below)
Range
extreme southern Ontario and probably states bordering Lake Erie and Lake Ontario
Food
larvae are predators of scale insects
Internet References
pinned adult images with labeled field marks (Jeff Skevington, Field Guide to the Flower Flies of Ontario)
