Life Histories and Immature Stages of Four Ichneumonid Parasites of the European Pine Shoot Moth Rhyacionia buoliana (Schiff.) in Ontario

Abstract

AbstractFour indigenous parasites of R. buoliana are discussed: Exeristes comstockii (Cress.), Scambus hispae (Harr.), Scambus tecumseh Vier. and Itoplectis conquisitor (Say). The first three are external larval parasites and the fourth an internal pupal parasite. Observations are given on the hosts, life histories, and habits under laboratory conditions. The immature stages are described.