twisted leaves of cherry. cherry branch with wrinkled leaves affected by black aphid. aphids, aphis schneideri, severe damage from

leaves cherry aphid garden branch damage infection pests severe black aphis leaf disease agriculture colony insect plant tree organic nature macro pathology pest problem green gardening aphidoidea blackfly bug growth wrinkled summer spring sick background aphids closeup color outdoor danger detail natural fresh bright diseased foliage eggs deformed twisted cherry affected aphid schneideri pests damaged virus