Green click beetle

Cidnopus aeruginosus, commonly known as the green click beetle, is a member of the Coleoptera order and the Elateridae family. This insect is recognized as a notable agricultural pest, primarily due to the destructive behavior of its larvae, which significantly impact field crops and vegetable production.

The pest causes damage to a wide range of crops, including cereals, corn, potatoes, sugar beets, and various legumes. The larvae, commonly known as wireworms, live beneath the soil surface for several years, consuming the seeds, roots, and underground stems, which often leads to sparse plant stands and significant yield losses.

The biology of this species involves a multi-year life cycle. Adult beetles emerge in spring to feed on foliage and flowers before mating. Females deposit eggs in the soil. The resulting larvae go through multiple instars, feeding on the underground portions of plants, which makes them particularly difficult to control once they are established in the soil profile.

Damage symptoms include yellowing, wilting, and poor seedling emergence. Wireworms are especially detrimental because they can destroy crops during the initial establishment phase, often necessitating replanting. Their presence weakens the plants, making them more susceptible to secondary fungal and bacterial soil-borne infections.

• Implementing crop rotation strategies that disrupt the life cycle of the beetles.
• Deep tillage and soil cultivation to expose larvae and eggs to predators and desiccation.
• Application of soil-applied insecticides or seed treatments during the planting process.
• Maintaining field hygiene by controlling weeds that act as alternate hosts.