VERMONT - When the weather turns cold, four common insect invaders may show up uninvited in a home. None of them breed in the house or cause any damage to humans, pets, food items or structures. These nuisance pests are looking for a warm, protected place to overwinter and hibernate.
The western conifer seed bug (Leptoglossus occidentalis) is the largest of the four insects. It feeds primarily on seeds and developing cones of several conifer species. The range of these true bugs (order Hemiptera) currently extends across the northern US into Canada.