1. Department of Environmental Science, Policy, and Management, University of California, Berkeley, California 94720-3114;
2. Saint-Jean-sur-Richelieu Research and Development Centre, Agriculture Agri-Food Canada, Saint-Jean-sur-Richelieu, Quebec J3B 3E6, Canada;
3. Department of Entomology, Michigan State University, East Lansing, Michigan 48824;
4. Technological Transfer Center, Fondazione Edmund Mach, San Michele all'Adige, Trento 38010, Italy;