Western Conifer Seed Bug nymph

Coniferous forests, woodlands, and frequently dwellings during autumn and winter.

Herbivorous; they use piercing-sucking mouthparts to feed on the developing seeds and cones of various conifers like pine and Douglas-fir.

Nymphs undergo five developmental stages (instars) and are active in summer. They are known for seeking warmth in buildings during cold months and can emit a pungent defensive odor if disturbed.

They are harmless to humans and do not bite, sting, or carry diseases. However, they can be a nuisance pest in homes and may cause minor damage to seed crops in forestry.