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Record of the Genus Peristenus Foerster (Hymenoptera : Braconidae) from India, with Descriptions of Four New Species

The genus Peristenus is easily distinguished by the reduction of vein M + CUI of the forewing, the short submarginal cell of the forewing, the short and more or less curved ovipositor and sides of petiole meeting ventrally at the base. Peristenus species arc koinobiont endoparasitoids of nymphs and adults of Miridae and Lygaeidae. The early instar nymph is parasitized and the mature parasite larva emerges from either the mature host nymph or adult. (Shaw, 1985 & 1988; Chen and van Achterberg, 1997). Peristenus was recently removed from synonymy in Leiophron and includes a natural assemblage of species distinct from Leiophron (Loan and BlIewicz-Pawinska, 1973). Peristenus has been revised for the Palearctic (Loan, 1974a) and Nearctic (Loan, 1974b) regions. A key to the Ethiopian species was provided by Nixon (1946). Shaw (1985) described the phylogeny of the genus Peristenus Foerster. Chen and van Achterberg (1997) were currently revised the genus from China.