USDA Forest Service - Region 8 - Southern , USDA Forest Service, Bugwood.org
USDA Forest Service , Bugwood.org
Milan Zubrik, Forest Research Institute - Slovakia, Bugwood.org
Milan Zubrik, Forest Research Institute - Slovakia, Bugwood.org
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Milan Zubrik, Forest Research Institute - Slovakia, Bugwood.org
Haruta Ovidiu, University of Oradea, Bugwood.org
Haruta Ovidiu, University of Oradea, Bugwood.org
Milan Zubrik, Forest Research Institute - Slovakia, Bugwood.org
John Ghent, John Ghent, Bugwood.org
USDA APHIS PPQ , Bugwood.org
Pest and Diseases Image Library , Bugwood.org
USDA APHIS PPQ - Oxford, North Carolina , USDA APHIS PPQ, Bugwood.org
Vladimir Petko, V.N. Sukachev Institute of Forest SB RAS, Bugwood.org
USDA APHIS PPQ , Bugwood.org
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org