Ohio State Weed Lab , The Ohio State University, Bugwood.org

Tom Heutte, USDA Forest Service, Bugwood.org

Ohio State Weed Lab , The Ohio State University, Bugwood.org

Ohio State Weed Lab , The Ohio State University, Bugwood.org

Tom Heutte, USDA Forest Service, Bugwood.org

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

Ohio State Weed Lab , The Ohio State University, Bugwood.org

Ohio State Weed Lab , The Ohio State University, Bugwood.org