Adults of the stinkbug have the typical shield-shape of stink bugs that most people are accustomed to seeing. They are approximately 5/8 inch long and 3/8 inch in width. The upper side of the body is mottled shades of brown and gray, and is covered with dense punch marks. They have dark red eyes and their legs are brown with faint white banding. The Brown Marmorated Stink Bug is a plant pest that was introduced into the United States from Japan, Korea and China. It feeds primarily on fruits and seed pods of a wide arrange of plants. It is also a nuisance pest that invades buildings in the autumn.
The adults begin to fly to these sites in the middle of September. Adults emerge from their ovenvintering sites in the spring, usually in early May. After they feed for about two weeks, they mate, and the females begin to lay eggs. Eggs are laid in clusters of about 28 eggs on the undersides of the leaves from June to August. A single female can lay up to 400 eggs. Eggs hatch in three to seven days.
The first reports of damage by the brown marmorated stinkbug was on ornamental plants such as butterfly-bush and paulownia as well as backyard peach and pear trees. Beginning in 2006, commercial fruit growers reported damage in apple and pear orchards in eastem Pennsylvania and western New Jersey. In Pennsylvania, this pest is also found in high populations in soybeans. Based upon its known habits, it is likely to invade agricultural areas and will pose a risk to other crops as it continues to expand its geographic range.
Treat the outside perimeter to gain control of stink bugs. Interior treatments should be limited since they do not breed indoors. Liquid treatments, dusts and granular insecticide are some of the best tools to use in combating stink bugs.