Jeff Hahn, University of Minnesota
Size: 1/2 - 3/4 inch long
Description: Cylindrically shaped insects; generally dark-colored but can also have white, yellow, or red markings; they have a round, distinct head, often with a noticeable neck between the head and the thorax; females possess a conspicuous ovipositor.
Where/When: Occasionally found indoors, primarily in the winter. Wood wasps are associated with wood, especially firewood.
Significance: They are harmless to people and do not re-infest wood or otherwise damage property; they are just a nuisance.