Extension > Garden > Diagnose a problem > What insect is this? > General/curiosity insects > Insects with obvious wings: greater than 1 inch long or wingspan is 2 inches or more > Great black wasp

Great black wasp

David Cappaert, Michigan State University, Bugwood.org

Karl Foord, University of Minnesota

Description: 1 - 1 1/4 inch long. 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).