Caused by jumping plant louse. Galls are light green and nipple-shaped. Caused by jumping plant louse. Small, round, multi-celled growths of the bud. Caused by mite.
Galls are bladderlike, red, and found on the top side of leaves.
Caused by aphid. Green, marble-shaped galls found on the leaf petioles. Caused by mite. Form cauliflower-like growth on leaf buds. Caused by aphid.