Mealybugs
Mealybugs Target Crops: Citrus, Apples, Pears, Avocados, Grapes, Coffee, Sugarcane, Cassava, Papaya & Sunflowers. Damage They cause damage by sucking the juice from their host plants. Like many pests, mealybugs tend to favor new growth. Over time, their damage causes the leaves to yellow and eventually drop from the plant.