John D. Byrd, Mississippi State University, Bugwood.org

John D. Byrd, Mississippi State University, Bugwood.org

Steve Dewey, Utah State University, Bugwood.org

Steve Dewey, Utah State University, Bugwood.org

Steve Dewey, Utah State University, Bugwood.org

Steve Dewey, Utah State University, Bugwood.org

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

D. Walters and C. Southwick, USDA, Bugwood.org