Woundwort shield bug

The woundwort shield bug (Eysarcoris fabricii) is an insect species within the Hemiptera order and the Pentatomidae family. It is a common pest that impacts various botanical families, posing a significant challenge to both ornamental and agricultural plant production.

The bug primarily feeds on plants from the Lamiaceae family, but it is known to migrate to berry crops such as raspberries, blackberries, and strawberries. By inserting its proboscis into the plant tissues, the insect extracts vital nutrients, which weakens the plant and stunts its growth during critical development phases.

The lifecycle of Eysarcoris fabricii consists of egg, nymph (five instars), and adult stages. Overwintering occurs in the adult stage, where insects find refuge under leaf litter, bark, or within soil crevices. Once spring temperatures rise, the adults emerge to feed and begin the reproductive cycle by laying clusters of eggs on the undersides of leaves.

Damage to crops is often characterized by the appearance of discolored spots, fruit deformation, and general loss of vigor. The piercing of developing fruits leads to localized tissue death. Furthermore, the presence of these bugs can result in an unpleasant odor and taste in berries, rendering them completely unsuitable for sale or consumption.

Effective management strategies require an integrated approach. Essential practices include:

• mechanical weeding of host plants (Lamiaceae family) around crop perimeters;
• sanitation of fields by removing crop debris where adults hibernate;
• targeted application of insecticides when nymphs are present