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By: Janzen, D H - Walker, A. K. - Whitfield, James B. (James Bryan), - Delvare, Gérard - Gauld, Ian D.Type: ArticleIn: Journal of Hymenoptera researchVolume: 12Series:Issue:Date: 2003Page Range: 42--76Publication Info: Washington, D.C, International Society of Hymenopterists, [1992-Subjects: