Camphor psyllid

The camphor psyllid (Trioza camphorae) is a small insect belonging to the order Hemiptera and the family Triozidae. It is a highly specialized pest that primarily feeds on species within the Lauraceae family, with the camphor tree (Cinnamomum camphora) serving as its main host.

This pest is primarily found in subtropical regions where its host trees grow. Because the psyllid targets the most succulent and active growth stages of the plant, its presence can significantly impact the aesthetic value and health of both ornamental trees and young nursery stock.

The lifecycle of the insect consists of eggs, nymphal stages, and adults. The female deposits eggs directly into the leaf tissue. As the nymphs emerge, they begin to feed on the plant sap, creating characteristic pits or galls on the leaves, which serve as protective shelters during their development.

Damage caused by Trioza camphorae is characterized by leaf distortion, chlorosis, and the development of galls. Furthermore, the secretion of honeydew by the nymphs creates a substrate for sooty mold, which inhibits photosynthesis and weakens the overall vigor of the host plant.

Management and control strategies involve a multi-faceted approach. Key measures include:

• Regular monitoring of new foliage for the presence of galls.
• Pruning and destroying infested plant material to reduce the pest population.
• Application of systemic insecticides during the peak activity of nymphs.
• Enhancing plant health through proper irrigation and balanced fertilization to improve natural resistance.