First described in 1837, Piezodorus guildinii (a.k.a the red-shouldered stink bug) has been reported throughout the Americas. In Brazil, it is one of the principal pentatomid pests of soybean and has been common since 1970. In North America, it occurs in the southeast, as far north as Arkansas, as far east as South Carolina, Georgia, and Florida, and as far west as New Mexico.