Stink bugs are often more prevalent in soybean fields around this time of year, especially in the southern half of the state. Stink bug nymphs and adults are fluid feeders with piercing-sucking mouthparts. Most species are herbivores but a few are beneficial predators. Because herbivorous stink bugs build up in soybean after bloom, they can be found feeding on developing pods, resulting in shriveled, desiccated seeds. The species below are known to occasionally cause problems for Iowa producers.