Click beetle Pheletes

Systematic position. The genus Pheletes belongs to the order Coleoptera and the family Elateridae. Commonly known as click beetles, these insects are characterized by their unique thoracic mechanism that allows them to flip themselves upright with a distinct clicking sound.

Host crops. The larvae of these beetles, widely known as wireworms, are notorious polyphagous pests. They cause significant economic damage to a variety of crops, including cereals, maize, potatoes, sugar beets, and various vegetable crops by feeding on underground plant structures.

Biology and life cycle. These insects undergo complete metamorphosis. Females lay eggs in the soil, and the resulting larvae live underground for several years, depending on the species and environmental conditions. During this period, larvae migrate vertically in the soil profile to find optimal moisture and temperature conditions.

Character of damage. Wireworms cause damage by feeding on seeds, roots, and subterranean stems. This feeding often leads to stand loss, weak plant development, and stunted growth. Furthermore, the boreholes made by wireworms in tubers and root vegetables significantly reduce their market value and increase susceptibility to secondary rot.

Control measures. Integrated pest management (IPM) is essential for controlling Pheletes populations.

• Cultural practices: deep autumn plowing, crop rotation, and diligent weed control (especially of perennial grasses).
• Chemical control: seed treatments with systemic insecticides and the application of granular soil insecticides at the time of planting to protect vulnerable seedlings.