Many species of aphid can transmit PRSV, particularly the Peach Aphid and Melon Aphid. These farming ants protect the aphids by fighting off aphid predators. Insects attracted to muskmelons include the cucumber beetle, melon aphid, melonworm moth and the pickleworm. Adult butterflies feed on flower nectar and aphid honeydew. Other common names include blackfly, bean aphid, and beet leaf aphid. "Entomophaga" is effective against pests such as the green peach aphid. It is sprayed on plants to control scale, aphid, and other pest populations by suffocation. Control is largely dependent on using insecticides to control the aphid vectors. Insecticidal soap is sold commercially for aphid control. The relationship is mutualistic, as both ant and aphid benefit. Another example is the soybean aphid ("Aphis glycines"). There also is evidence of cornicle wax attracting aphid predators in some cases. Plants mount local and systemic defences against aphid attack. The virus is acquired from an infected host during feeding by the aphid vector. The plant can suffer from aphid attack.