Boxelder Bug

Natural Habitat

Typically found on or near boxelder, maple, and ash trees; often seek shelter in houses and buildings during cold weather.

Diet & Feeding

Primarily feeds on the seeds of boxelder trees, but may also consume maple and ash seeds, and occasionally fruit.

Behavior Patterns

They are known for congregating in large groups on sunny southern or western exposures of buildings to stay warm; they undergo simple metamorphosis (egg, nymph, adult).

Risks & Benefits

Generally considered a nuisance pest rather than a danger; they do not bite and are not harmful to humans or structural wood, though their excrement can stain surfaces.

Identified on: 4/13/2026