1. Department of Entomology, Ohio Agricultural Research and Development Center, The Ohio State University, 1680 Madison Ave, Wooster OH 44691 (e-mail: michel.70@osu.edu).
2. Department of Entomology, Purdue University, 901 W. State Street, West Lafayette IN 47907.
3. Ontario Ministry of Agriculture, Food and Rural Affairs Agronomy Building, University of Guelph, Ridgetown Campus, P.O. Box 400, 120 Main Street East, Ridgetown, Ontario N0P 2C0.
4. Department of Entomology, Michigan State University, 243 Natural Science Building, East Lansing MI 48824.