Chris Evans, University of Illinois, Bugwood.org

Chris Evans, University of Illinois, Bugwood.org

Chris Evans, University of Illinois, Bugwood.org

Chris Evans, University of Illinois, Bugwood.org

Chris Evans, University of Illinois, Bugwood.org

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

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

John Cardina, The Ohio State University, Bugwood.org

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

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

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

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