Forest and Kim Starr, Starr Environmental, Bugwood.org

Forest and Kim Starr, Starr Environmental, Bugwood.org

Clemson University - USDA Cooperative Extension Slide Series , Bugwood.org

Jerry A. Payne, USDA Agricultural Research Service, Bugwood.org

John A. Weidhass, Virginia Polytechnic Institute and State University, Bugwood.org