Joseph Berger, Bugwood.org

Joseph Berger, Bugwood.org

Joseph Berger, Bugwood.org

Central Science Laboratory, Harpenden , British Crown, Bugwood.org

Whitney Cranshaw, Colorado State University, Bugwood.org

Whitney Cranshaw, Colorado State University, Bugwood.org

New York State Agricultural Experiment Station , Cornell University, Bugwood.org

H.J. Larsen, Bugwood.org