
Community identification
Western Conifer Seed Bug
Leptoglossus occidentalis
- Order & Family
- Hemiptera, Coreidae
- Size
- 15 to 20 millimeters in length
Natural Habitat
Conifer forests natively, but frequently invades residential homes seeking shelter during autumn.
Diet & Feeding
Feeds on the developing seeds and cones of pine, Douglas-fir, and other conifer trees using piercing-sucking mouthparts.
Behavior Patterns
Active flyers during warm months that congregate on sunny exterior walls in autumn before overwintering indoors. Releases a pungent, foul-smelling odor when disturbed.
Risks & Benefits
Harmless to humans as they do not bite, sting, or transmit diseases, and cause negligible damage to mature trees, but can become a significant household nuisance.