Plum leafhopper

The plum leafhopper (Typhlocyba prunicola) is a small insect species belonging to the order Hemiptera and the family Cicadellidae. It is a common, specialized pest that primarily affects deciduous fruit trees. Because these insects thrive in the canopy of trees, they can often go unnoticed until significant leaf damage has already occurred.

This pest mainly targets stone fruit crops, with a clear preference for plum (Prunus domestica), cherry, and wild cherry trees. The leafhoppers feed on the sap from the leaves, which causes physiological stress to the tree. While not always fatal, heavy infestations can significantly weaken the health of the orchard over several seasons.

The life cycle of Typhlocyba prunicola typically involves overwintering as eggs inserted into the bark of young shoots. As temperatures rise in spring, the eggs hatch into nymphs, which immediately begin feeding on the underside of leaves. Depending on the geographical region and climate, the species may complete one or more generations per year, with the highest activity peaking in mid-summer.

Feeding damage is characterized by a stippled or mottled appearance on the upper leaf surface, commonly referred to as "white spotting." As the leafhoppers continue to feed, these spots coalesce, leading to severe chlorosis. In extreme cases, the affected leaves may turn brown and drop prematurely, causing the tree to lose its photosynthetic capacity and reducing total fruit yield.

Management strategies focus on early detection and the integration of cultural and chemical controls. Maintaining tree vigor through proper irrigation and fertilization is the first step in resistance. If pest populations exceed economic thresholds, specific insecticidal applications during the nymphal development stage are most effective. Monitoring with yellow sticky traps is recommended to track adult activity and time insecticide applications accurately.