1. Department of Natural Resources and the Environment, University of New Hampshire , 56 College Road, Durham, NH 03824 , USA
2. USDA Forest Service, Eastern Region, State, Private, and Tribal Forestry, Forest Health Protection , 271 Mast Road, Durham, NH 03824 , USA
3. Department of Entomology and Plant Pathology, University of Arkansas , PTSC 217, Fayetteville, AR 72701 , USA