Abstract
Family Pentatomidae is represented by four subfamilies (Asopinae, Pentatominae, Phyllocephalinae and Podopinae) and 86 genera in south India. Pentatominae are the dominant group represented by 29 tribes and 72 genera. An illustrated key including the habitus of majority of genera as well as illustrations of important diagnostic features are given for the subfamilies, tribes and genera occurring in south India. In addition, a key to families of Pentatomoidea and a checklist of species of Pentatomidae occurring in south India are also included.