Robert Wick, University of Massachusetts, Bugwood.org
William M. Brown Jr., Bugwood.org
Dr. Augustin, Landesanstalt für Pflanzenbau und Pflanzenschutz: Mainz, Bugwood.org
Central Science Laboratory, Harpenden , British Crown, Bugwood.org
Central Science Laboratory, Harpenden , British Crown, Bugwood.org
Dr. Augustin, Landesanstalt für Pflanzenbau und Pflanzenschutz: Mainz, Bugwood.org
Central Science Laboratory, Harpenden , British Crown, Bugwood.org
DAFF Archive , Bugwood.org
Central Science Laboratory, Harpenden , British Crown, Bugwood.org
Howard F. Schwartz, Colorado State University, Bugwood.org
Sandra Jensen, Cornell University, Bugwood.org
Sandra Jensen, Cornell University, Bugwood.org