Western Boxelder Bug (Nymph)

Natural Habitat

Commonly found near boxelder, maple, and ash trees; often migrates to sunny walls or indoors during colder months.

Diet & Feeding

Sucks juices from the seeds, leaves, and soft twigs of boxelder trees and other acer species.

Behavior Patterns

Nymphs are bright red and lack fully developed wings. They are highly social, often congregating in large groups on warm surfaces. They undergo incomplete metamorphosis.

Risks & Benefits

Generally harmless to humans and trees. They are considered a nuisance pest when they enter homes in large numbers. They do not bite or sting but may leave stains on fabrics.

Identified on: 6/11/2026