Barbara Tokarska-Guzik, University of Silesia, Bugwood.org

Barbara Tokarska-Guzik, University of Silesia, Bugwood.org

Barbara Tokarska-Guzik, University of Silesia, Bugwood.org

Barbara Tokarska-Guzik, University of Silesia, Bugwood.org

Barbara Tokarska-Guzik, University of Silesia, Bugwood.org

Rob Routledge, Sault College, Bugwood.org

Chris Evans, University of Illinois, Bugwood.org

Barbara Tokarska-Guzik, University of Silesia, Bugwood.org

Dave Powell, USDA Forest Service (retired), Bugwood.org

Chris Evans, University of Illinois, Bugwood.org

Rob Routledge, Sault College, Bugwood.org

Rob Routledge, Sault College, Bugwood.org