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Pine Seed Bug

“The Pine Seed Bug…” The adult pine seed bug is also called the Western conifer seed bug. It is a common household invader found inside homes during the fall, winter and spring. The pine seed bug is about 1 inch long, elongate in shape and dull reddish brown in color. It appears pointed at both ends. The antennae are almost the length of the body and are obvious in living specimens. A faint, white zigzag line is more or less noticeable across the center of the back (depending on individual). The pine seed bug is in a small group of insects called the leaffooted bugs. This name refers to the flat, leaf-like expansions of the hind legs. Pine seed bug is a true bug. Consistent with all members of this order the insect has a simple life cycle (egg, nymph, adult) and sucking mouthparts. Pine seed bug nymphs and adults spend the summer on pine and Douglas-fir trees where they feed on sap from green cones and twigs. This sap feeding is of no consequence to otherwise healthy trees.

In early fall adult pine seed bugs typically invade heated structures, similar to the better known cluster flies. They are attracted to the exposed south sides of houses where they bask in the warmth of the late summer sunlight. After sunset, they crawl into wall voids and attics through cracks and gaps in the siding, foundation, soffit, fascia and eaves, or around windows/doors. Woodpiles and stacked lumber are other typical hideouts. They do not bite, sting, feed, carry diseases or otherwise cause harm to people and pets. They cannot reproduce inside the house, as egg laying and development are restricted to the host plants during the summer months.

This nuisance produces an unmistakable odor when disturbed or squashed. Indoors they may stain draperies, carpets, furniture or walls. They also create a very uncomfortable environment.

Our “Home Service Program (HSP)” is highly successful and will eliminate and control your pine seed bug problems. The HSP Program will also control invaders such as; cluster flies, and boxelder bugs.