Halyomorpha halys – brown marmorated stink bug
They are various shades of brown on both the top and undersides, with gray, off-white, black, copper, and bluish markings. Markings unique to this species include alternating light bands on the antennae and alternating dark bands on the thin outer edge of the abdomen. The legs are brown with faint white mottling or banding. The stink glands are located on the underside of the thorax, between the first and second pair of legs, and on the dorsal surface of the abdomen.
The adults are approximately 1.7 centimetres (0.67 in) long and about as wide, forming the shield shape characteristic of other stink bugs.
The brown marmorated stink bug is more likely to invade homes in the fall than others in the family. The bug survives the winter as an adult by entering houses and structures when autumn evenings become colder, often in the thousands. In one home more than 26,000 stinkbugs were found overwintering. Adults can live from several months to a year.
They will enter under siding, into soffits, around window and door frames, chimneys, or any space which has openings big enough to fit through. Once inside the house, they will go into a state of hibernation. They wait for winter to pass, but often the warmth inside the house causes them to become active, and they may fly clumsily around light fixtures.
Control of stink bugs is a priority of the Department of Agriculture which has developed an artificial pheromone which can be used to bait traps, Because the bugs insert their proboscis below the surface of fruit, and then feed, some insecticides are ineffective; in addition, the bugs are mobile, and a new population may fly in after the resident population has been killed. In the case of soybean infestations research shows that spraying only the perimeter of a field may be effective. As of 2012, native predators such as wasps and birds were showing increased signs of feeding on the bugs as they adapt to the new food source.
Stink Bug Pest Control in Seattle