Green leafhopper

The green leafhopper (Cicadella viridis) is a significant plant pest belonging to the order Hemiptera and the family Cicadellidae. Adult insects typically reach 6–9 mm in length and possess a distinct bright green coloration, which provides excellent camouflage against the green foliage they inhabit. Nymphs closely resemble adults but are smaller and lack fully developed wings.

This pest is highly polyphagous, meaning it feeds on a diverse range of plant species. It is commonly found on berry bushes such as raspberries and currants, various fruit trees, ornamental shrubs, and many vegetable crops. In favorable weather conditions, the population can expand rapidly, migrating from surrounding wild vegetation into cultivated fields and gardens.

The biological cycle of the green leafhopper typically involves one or two generations per year. The insect overwinters in the egg stage, with females depositing eggs into the stems or under the bark of young shoots. Once the weather warms, nymphs emerge and undergo several molting stages, spending their entire life cycle feeding on the nutrient-rich sap of host plants.

The damage caused by these insects occurs primarily through the extraction of plant sap. Feeding activity creates localized yellow or white spots on the leaves, which can eventually lead to leaf chlorosis, curling, and early senescence. Furthermore, green leafhoppers are notorious for transmitting various plant viruses and phytoplasmas, which are often more destructive to the crop than the feeding damage itself.

Effective pest management involves an integrated approach combining mechanical, biological, and chemical strategies:

• Removing host weeds and crop debris to eliminate overwintering sites.
• Pruning and destroying infested shoots early in the season.
• Using yellow sticky traps to monitor and reduce adult populations.
• Applying contact or systemic insecticides during the peak nymph emergence period.
• Encouraging natural predators such as spiders and parasitic wasps in the garden.