Kerriidae

These pests primarily target woody plant species, including various trees and shrubs. Host plants commonly include species of Acacia, Ficus, and diverse orchard trees. Because they colonize branches and twigs, they can have a significant economic impact on both forestry and fruit production, as well as on ornamental landscaping and specialized resin-harvesting industries.

The life cycle of Kerriidae involves a metamorphosis that includes an egg stage, a mobile crawler stage, and a sedentary adult stage. The crawlers are the primary mechanism for dispersal; they emerge from the mother's protective shell and move across the plant tissue to find a suitable feeding site. Once settled, the females begin feeding and secreting the resinous shell that protects them from external predators and environmental stressors.

The damage caused by Kerriidae is characterized by the depletion of plant sap, which stunts growth and reduces plant vigor. Furthermore, the excretion of honeydew promotes the growth of sooty mold, which coats leaves and blocks sunlight, further hindering photosynthesis. In severe infestations, twigs may die back, and the overall plant structure becomes severely compromised, leading to economic yield losses.

Management strategies focus on breaking the life cycle at the crawler stage, which is the most vulnerable phase of the insect. Integrated pest management involves regular field scouting and the strategic application of horticultural oils or systemic insecticides when crawlers are active. Mechanical removal of heavily infested branches is a crucial cultural practice to reduce the overall pest pressure in an orchard or forest plantation.

• Regular monitoring during the crawler emergence season.
• Targeted applications of systemic insecticides.
• Use of horticultural oils to suppress immature stages.
• Pruning and destruction of infested branches to limit dispersal.