Fabio Stergulc, Università di Udine, Bugwood.org
Fabio Stergulc, Università di Udine, Bugwood.org
USDA Forest Service - Northeastern Area , USDA Forest Service, Bugwood.org
Steven Katovich, Bugwood.org
Robert A. Haack, USDA Forest Service, Bugwood.org
James Solomon, USDA Forest Service, Bugwood.org
Pennsylvania Department of Conservation and Natural Resources - Forestry , Bugwood.org
Eric R. Day, Virginia Polytechnic Institute and State University, Bugwood.org
Eric R. Day, Virginia Polytechnic Institute and State University, Bugwood.org
Eric R. Day, Virginia Polytechnic Institute and State University, Bugwood.org
Pest and Diseases Image Library , Bugwood.org
Leah Bauer, USDA Forest Service Northern Research Station, Bugwood.org
Paul Langlois, USDA APHIS ITP, Bugwood.org
