A list of the Pentatomidae species of the Pampa biome, State of Rio Grande do Sul, Brazil is provided. The list is based on surveys carried out in the Serra do Sudeste, Canguçu and Caçapava counties, and in Parque de Espinilho da Barra do Quaraí during 2003-2004; these areas were never collected in Rio Grande do Sul state before. Sweeping net and beating tray were used to sample herb layer, and trees and shrubs, respectively. Fifty one species of Pentatomidae were registered, distributed in five subfamilies (Asopinae, Cyrtocorinae, Discocephalinae, Edessinae and Pentatominae) and 27 genera. The Pentatominae subfamily had the largest number of species (32 spp.). All the registered localities represent new records to the local fauna, and host plants were identified for nine pentatomid species.
stink bugs; heteropterous insects; inventory; South of Brazil
