John Castello is Professor and Associate Chair in the Department of Environmental and Forest Biology at the State University of New York College of Environmental Science and Forestry, Syracuse. He has conducted research on the viruses that infect forest and shade trees in the US, Germany and New Zealand. Stephen Teale is Associate Professor in the Department of Environmental and Forest Biology at the State University of New York College of Environmental Science and Forestry, Syracuse. His research interests include forest entomology, chemical ecology, pheromones of forest insects, invasive species and evolution of pheromone communication.