ABSTRACT
Piezodorus guildinii, originally described from material collected on the island of St. Vincent in the Lesser Antilles in the Caribbean Sea, currently ranges from Argentina and Brazil through Central America to the southern United States. Piezodorus is a predominantly Old World genus with about a dozen valid species worldwide, some of which are difficult to separate. Soybean production in the United States doubled from 1960 to 1973, with the greatest rate of increase in the southeastern states. Piezodorus guildinii has been a serious pest of soybean and leguminous pasture crops in South America for many years and, thus, there have been several studies on its biology and ecology. In North America, the most common protocol for monitoring stink bugs in soybean relies on the sweep net that measures infestations in the upper canopy. Chemical control is the primary management tactic used to manage Piezodorus guildinii in soybean.
