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  • Yellowjackets and paper wasps 

    Landolt, Peter J.; Antonelli, Arthur L. (Pullman, Washington : Washington State University. Extension., 2003-05)
    Yellowjackets and paper wasps are beneficial insects. They feed their young numerous insects that ordinarily damage shade trees and crops. They also kill countless houseflies and blow flies. A few species of yellowjackets, ...