Great black wasp
David Cappaert, Michigan State University, Bugwood.org
Karl Foord, University of Minnesota
Size: 1 - 1 1/4 inch long
Description: Wasp in iridescent violet-black with smoky black wings with a violet sheen.
Where/When: Found on perennials. Active July to September.
Significance: Has a stinger but is not aggressive and rarely stings (it can sting if disturbed).