To distinguish BMSB from the brown stink bug (the term 'marmorated' means having a marbled or streaked appearance), look for a distinct double white band on the antennae, alternating light and dark bands around the abdomen and red eyes.
Soybeans are vulnerable to seed damage by BMSB after the R3 stage leading to deformed seeds and pod loss. In addition, soybean plants retain green stems and mature improperly. The pest may also increase the potential for ear molds and negatively impact seed quality in corn due to ear feeding injury.
Smaller than a stink bug, but larger than an aphid, adult kudzu bugs are shiny, 3.5–6 millimeters in length and brown to olive green in color with light freckled spots. The pests have red eyes and a broadly round tail end.
Kudzu bugs induce stress by feeding on soybean stems and leaves, reducing pods per plant, seeds per pod and seed size. The pest may also reduce yields and cause harvest problems by delaying soybean maturity and causing green stem syndrome. Insecticide treatment must penetrate the canopy to control kudzu bugs effectively.
Source: DuPont Pioneer