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A BSTRACT The role of the self-sown shrubs Vitex agnus castus and Euphorbia characias ssp. wulfenii as reservoirs of aphid parasitoids was investigated. In field studies, V. a. castus grew adjacent to an orchard of Citrus sinensis and E. characias ssp. wulfenii adjacent to an orchard of Prunus dulcis . The relative abundance of the parasitoids of Aphis viticis Ferrari on V. a. castus , Toxoptera aurantii (Boyer de Fonscolombe) on C. sinensis , Aphis euphorbiae Kaltenbach on E. characias ssp.doi:10.1653/0015-4040(2008)91[179:vacaec]2.0.co;2 fatcat:vo7a6xkvhfbaplszjyhlzbd3si