Plant bug Diaphnocoris chlorionis

Systematic position: The insect Diaphnocoris chlorionis belongs to the order Hemiptera and the family Miridae (plant bugs). It is widely recognized in agricultural entomology as a pest that affects various fruit crops, primarily in temperate geographic zones.

Host plants: This species primarily targets fruit trees belonging to the Rosaceae family. It is most commonly found in apple orchards, but it can also inhabit pear trees and wild shrubs, which serve as reservoirs for the pest population in surrounding rural areas.

Biology and life cycle: The life cycle involves overwintering as eggs within the bark of young twigs. Larvae emerge in spring during the bud-break stage and begin feeding on succulent plant tissues. The insects undergo several molting stages, with the adult phase typically occurring during the peak of the orchard's vegetative season.

Damage and economic impact: The damage is caused by both nymphs and adults piercing plant tissues with their mouthparts.

• Deformation of leaves and buds.
• Necrotic spots on young fruit.
• Premature fruit drop resulting in significant yield loss.
• Reduced marketability of the harvested fruit.

Protection measures: Integrated Pest Management (IPM) strategies are essential for controlling Diaphnocoris chlorionis. Regular scouting during the early stages of growth is crucial for determining the timing of intervention. Chemical control using selective insecticides should be applied only when population thresholds are exceeded, ensuring the protection of beneficial insects and pollinators in the orchard.