John Ghent, John Ghent, Bugwood.org

John Ghent, John Ghent, Bugwood.org

Gyorgy Csoka, Hungary Forest Research Institute, Bugwood.org

John Ghent, John Ghent, Bugwood.org

E. Bradford Walker, Vermont Department of Forests, Parks and Recreation, Bugwood.org

Steven Katovich, Bugwood.org

E. Bradford Walker, Vermont Department of Forests, Parks and Recreation, Bugwood.org

Steven Katovich, Bugwood.org

Gyorgy Csoka, Hungary Forest Research Institute, Bugwood.org

Gyorgy Csoka, Hungary Forest Research Institute, Bugwood.org

Steven Katovich, Bugwood.org