Alexander H. Purcell is Associate Professor, Department of Entomoloeical Sciences. University of California, Berkeley; Jerry K. Uyemoto is Plant Pathologist, U.S. Department of Agriculture, stationed at the Department of Plant Pathology, UC Davis; Robert A. Van Steenwyk is Entomologist, Cooperative Extension, UC Berkeley; Wallace R. Schreader is Farm Advisor, UC Cooperative Extension, San Joaquin County; Karen Gonot Suslow is Staff Research Associate, Department of Entomological Sciences, UC Berkeley; Bruce Kirkpatrick is Assistant Professor, Department of Plant Pathology, UC Davis;