4.Damage Characteristics Suck sap of leaves,twigs and tender stems, producing yellow and white spots on plants. Plants wither to death when sucking is severe. ●Cause malformation; o Transmit plant viruses; Pollute agricultural products and induce tetter (皮疹). z Suck sap of leaves, twigs and tender stems, Suck sap of leaves, twigs and tender stems, producing yellow and white spots on plants. producing yellow and white spots on plants. Plants wither to death when sucking is severe. Plants wither to death when sucking is severe. z Cause malformation; Cause malformation; z Transmit plant viruses; Transmit plant viruses; z Pollute agricultural products and induce Pollute agricultural products and induce tetter (皮疹). 4. Damage Characteristics 4. Damage Characteristics