The green peach aphid (GPA) is distributed worldwide and has a host range of over 400 species of plants. In the United States, green peach aphid is a serious pest of vegetables and potatoes. Economic damage results from direct removal of plant nutrients or through transmission of viruses causing plant disease. The green peach aphid is a vector of over 100 diseases in important crops including beans, citrus, crucifers, cucurbits, potato, tomato, sugar beet, and sugar cane.