Boxelder Bug

Natural Habitat

Commonly found in North America near boxelder trees, as well as maple and ash trees; they frequently congregate on sunny sides of buildings and move indoors to overwinter.

Diet & Feeding

Primarily feed on the seeds and sap of female boxelder trees, but they may also feed on other maple and ash species or occasionally fruit crops.

Behavior Patterns

They are social insects that gather in large numbers to bask in the sun. In autumn, they seek out cracks and crevices in human structures to hibernate through the winter.

Risks & Benefits

They are generally harmless to humans and do not bite or cause structural damage. However, they are considered a nuisance pest when they enter homes in large numbers and can leave red orange stains on surfaces from their fecal matter if crushed.

Identified on: 4/16/2026