The Asian cycad scale measures 1/16 inch long and has a white waxy covering. It sucks sap from the undersides of leaves, causing yellow spots on the upper sides of the leaves. A disruption in photosynthesis leads to stunted, browned leaves and leaf death. According to the Texas A&M Cooperative Extension, management should emphasize prevention and biological control. Remove and destroy infested leaves from your plant. Do not purchase plants with signs of infestation on their leaves, and do not plant sago palms close together. To avoid harming the beneficial lady beetle predator, use horticultural oil spray instead of malathion and other broad spectrum pesticides.