Epistrophella emarginata is a common North American species of
hoverfly.[1] Larvae are aphid predators [2] When laying eggs, the female oviposits on the
petioles of a leaf.[3]
Distribution
USA: D.C., Alabama, Alaska, Arkansas, Indiana, Illinois, Iowa, Kansas, Maine, Maryland, Michigan, Massachusetts, Minnesota, Missouri, Nebraska, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Vermont, Virginia, West Virginia, Wisconsin.
Canada: Saskatchewan, Alberta, Manitoba, Ontario, Quebec, Nova Scotia, New Brunswick
^Vockeroth, J.R. (1992). The Flower Flies of the Subfamily Syrphinae of Canada, Alaska, and Greenland (Diptera: Syrphidae). Part 18. The Insects and Arachnids of Canada. Ottawa, Ontario: Canadian Government Pub Centre. pp. 1–456.
ISBN0-660-13830-1.