Abstract

Hymenoptera that parasitize aphids are being widely employed as biological control agents for a variety of species including important cereal pests like the greenbug, Schizaphis graminum (Rondani), and the Russian wheat aphid, Diuraphis noxia (Mordvilko). Identification of these parasitoids using morphological markers is often difficult and requires a trained expert. This presents a serious obstacle to the successful selection, importation, rearing, mass release and tracking of these insects in biological control programs. The characterization of convenient biochemical markers for rapid identification of parasitoids is an important goal. This study was undertaken to determine if parasitoid epicuticular hydrocarbons might serve as useful markers to distinguish parasitoid species.

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