Jeff Hahn, University of Minnesota
Steve Katovich, USDA Forest Service, Bugwood.org
Size: 1 - 2 inches long
Description: Cylindrically shaped insects; reddish brown head, reddish brown and black thorax, and a black abdomen with yellowish stripes; also has long, amber-colored wings; females possess a conspicuous ovipositor.
Where/When: Occasionally found indoors, primarily in the winter. Horntails are typically associated with firewood, especially maple, oak, and elm.
Significance: They are harmless to people and do not re-infest wood or otherwise damage property; they are just a nuisance.