Western Conifer Seed Bug

Natural Habitat

Found in coniferous forests and around residential areas where pine, Douglas-fir, and cedar trees are present; commonly seeks shelter indoors during cold months.

Diet & Feeding

Feeds on the developing seeds and cones of coniferous trees by piercing them with a needle-like proboscis and sucking out the nutrients.

Behavior Patterns

They are active flyers and are often found basking in the sun; in late autumn, they aggregate on the walls of buildings to find crevices for overwintering.

Risks & Benefits

They do not bite, sting, or carry diseases, and they do not cause structural damage to homes. They are considered a nuisance pest indoors due to a faint pungent odor they release when threatened. In the ecosystem, they can reduce the seed yield of timber trees.

Identified on: 3/16/2026