Persimmon thrips

Ponticulothrips diospyrosi is a specialized pest of persimmon trees belonging to the order Thysanoptera and the family Phlaeothripidae. This insect causes significant damage to both commercial orchards and home gardens by deforming foliage and negatively impacting the quality and quantity of the fruit yield.

The primary host plant for this species is the persimmon (Diospyros). The pest specifically targets young leaves and tender shoots, congregating in areas of active growth, which inhibits the overall health and vigor of the trees.

The biology of this pest is closely synchronized with the phenological stages of the host tree. Adults overwinter in bark crevices or under bud scales. As the growing season begins, the thrips emerge and feed on plant sap, progressing through several developmental stages including eggs, larvae, pupae, and adults.

Typical symptoms of infestation include the curling of leaf margins, the development of necrotic brown spots, and premature leaf drop. In severe cases, the thrips can damage floral buds, leading to flower abortion and substantial losses in overall crop production.

• Regular field monitoring during the bud break and early leaf development phases.
• Application of systemic insecticides upon the detection of initial infestation symptoms.
• Sanitary measures, including the removal and destruction of infested plant debris during autumn.
• Implementing cultural practices to ensure tree health and improved resistance against pest pressure.