Identification
Black with white markings that mimic Baldfaced Hornet (Dolichovespula maculata). Second tergite entirely black. Eyes pale, with dark spots and vertical bands. Antennae short, fly-like.
Season
June-September in Ontario
See Also
Baldfaced Hornet (
Dolichovespula maculata) has long wasp-like antennae and completely black eyes.
Print References
Brimley, p. 354, lists a record from the mountains of North Caroina, September.
(1)Internet References
live and pinned adult images plus dates and field marks (Jeff Skevington
et al, Field Guide to the Flower Flies of Ontario)