Randy Cyr, Greentree, Bugwood.org

Penn State Department of Plant Pathology & Environmental Microbiology Archives , Penn State University, Bugwood.org

Rebecca A. Melanson, Mississippi State University Extension, Bugwood.org

John Hartman, University of Kentucky, Bugwood.org

John Hartman, University of Kentucky, Bugwood.org

Elizabeth Bush, Virginia Polytechnic Institute and State University, Bugwood.org

Alex. H. Purcell, University of California - Berkeley, Bugwood.org