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Halyomorpha halys, most commonly known as the brown marmorated stink bug, belongs to the wide family of stink bugs Pentatomidae. A native insect in mainland china, the brown stink bug was accidentally introduced into the United States via trade and cargo ships. You can easily distinguish them by their trade mark brown color, with a body length of 1.5 cm, and a white or pale tan belly that sometimes bear gray or black markings. Like other stink bug species, they lay their eggs, that become crop eating nymphs in the future, in plants.

Brown Stink Bugs are agricultural pests that can deal widespread damage to fruit crops and vegetables. The Brown Stink Bug’s assault to agricultural is widespread worldwide. It is a pest to soy beans and fruits in japan and feeds on a variety of fruits, vegetables, and other host plants including apples, peaches, cherry, green beans, pears, and rasp berries in the United States. It is an insect that sucks the life out of plants using its tube like suckers to pierce through th delicate skin of plants and crops. This form of feeding in part results to damaging results. They become the cause in the formation of small, necrotic areas on the outer surface of fruits but ranges from leaf stippling, cat-facing on tree fruits, seed loss, and transmission of plant pathogens.

Keep them out of your home:

Mechanical exclusion is the best method to keep stink bugs from entering homes and buildings. Cracks around windows, doors, siding, utility pipes, behind chimneys, and underneath the wood fascia and other openings should be sealed with good quality silicone or silicone-latex caulk. Damaged screens on doors and windows should be repaired or replaced.

Exterior applications of insecticides may offer some minor relief from infestations where the task of completely sealing the exterior is difficult or impossible. Applications should consist of a synthetic pyrethroid (i.e. deltamethrin, cyfluthrin, lambda-cyhalothrin, cypermethrin, sumithrin or tralomethrin) and should be applied by a licensed pest control operator in the fall just prior to bug congregation. Unfortunately, because insecticides are broken down by sunlight, the residual effect of the material will be greatly decreased and may not kill the insects much beyond several days or a week.

After Stink Bugs Have Entered the Structure

If numerous bugs are entering the living areas of the home, attempt to locate the openings where the insects gain access. Typically, stink bugs will emerge from cracks under or behind baseboards, around window and door trim, and around exhaust fans or lights in ceilings. Seal these openings with caulk or other suitable materials to prevent the insects from crawling out. Both live and dead stinkbugs can be removed from interior areas with the aid of a vacuum cleaner – however, the vacuum may acquire the smell of stink bugs for a period of time.

It is not advisable to use an insecticide inside after the insects have gained access to the wall voids or attic areas. Although insecticidal dust treatments to these voids may kill hundreds of bugs, there is the possibility that carpet beetles will feed on the dead stink bugs and subsequently attack woolens, stored dry goods or other natural products in the home. Although aerosol-type pyrethrum foggers will kill stink bugs that have amassed on ceilings and walls in living areas, it will not prevent more of the insects from emerging shortly after the room is aerated. For this reason use of these materials is not considered a good solution to long-term management of the problem. Spray insecticides, directed into cracks and crevices, will not prevent the bugs from emerging and is not a viable or recommended treatment.

Among the 22 species of stink bugs, the brown marmorated stink bug is the most likely to make their way in our homes. They invade and lurk in homes to survive the long winter season. Our own shelters serve as protective bunkers from the harsh elemnts making the bug a true survivor. They will virtually enter any crack or hole in the house. They will then hibernate in their new found space and wait for winter to end. When summer hits, they creep out of their holes and fly again to feed. They feed in the morning and fly around light posts at night. They are agricultural pests and home invaders. Not to mention they still emit the foul odor that all stink bugs produce.