[1] Virginia Tech,Department of Entomology
[2] USDA Forest Service,Forest Health Protection, Northern and Intermountain Regions
[3] University of Massachusetts,Department of Environmental Conservation
[4] USDA Forest Service,Northern Research Station
[5] USDA Forest Service,RWU 4552 Insects, Diseases and Invasive Plants, Southern Research Station
[6] USDA Forest Service,Forest Health Protection, Southern Region
[7] Cornell University,Department of Natural Resources