This introduced pest was first discovered in Arizona in 2008 and subsequently in California later that same year. It is a serious pest of crops such as crucifers (turnip, mustard) and kohl (cabbage, broccoli, cauliflower) where its feeding causes yellowing, wilting, and stunted growth. It also has been found feeding on papaya, sorghum, potato, cotton, and some legume crops. As with all stink bugs it feeds with a long proboscis that it inserts in the plant, sucking out the plant’s juices. Females lay up to 100 eggs in clusters on the plant or in the soil. The eggs hatch within a week and the nymphs develop to the adult stage over the next few weeks. This insect has been found to invade homes in the fall to spend the winter inside, typical of many kinds of stinkbugs.
Control of structure-invading bugs begins with a strong effort at exclusion, closing all openings they may enter, concentrating on the eaves and roof areas. Once inside they may be killed with treatments directly into the voids they inhabit, or the use of a vacuum for physical removal. The use of contact insecticides on infested plants will kill nymphs and adults.