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Peer-reviewed Article

French prune trees: Refuge for grape leafhopper parasite


L. Ted Wilson, University of California
Charles H. Pickett
Donald L. Flaherty
Teresa A. Bates

publication information

California Agriculture 43(2):7-8. March-April 1989.

author affiliations

L. Theodore Wilson is Professor, Department of Entomology, University of California, Davis; Charles H. Pickett is Staff Entomologist, California Department of Food and Agriculture, Sacramento; Donald L. Flaherty is Farm Advisor, UC Cooperative Extension, Tulare County; Teresa A. Bates is Research Assistant, Department of Entomology, UC, Davis.


Prune trees planted next to vineyards allow early-season buildup of Anagrus epos, an important parasite of the grape leafhopper. After surviving the winter on an alternate host, the prune leafhopper, Anagrus moves into the vineyard in the spring, providing grape leaf-hopper control up to a month earlier than in vineyards not near prune tree refuges.

author notes

The authors express their appreciation for funding provided by the California Raisin Advisory Board, the California Table Grape Commission, and Winegrowers of California.