Grape leafhopper

The Grape leafhopper (Erythroneura campora) belongs to the order Hemiptera and the family Cicadellidae. It is a specialized pest that causes significant economic damage to vineyards globally. These insects are small, agile, and typically reside on the undersides of leaves, making them difficult to spot during the initial stages of infestation.

This pest feeds primarily on Vitis vinifera and other grape species. By piercing the leaf epidermis and sucking out the sap, the insect disrupts the plant's metabolic processes. The cumulative effect of thousands of punctures significantly reduces the photosynthetic capacity of the foliage, which directly impacts vine vigor, fruit quality, and overall yield potential.

The lifecycle of Erythroneura campora consists of egg, nymph, and adult stages. The species typically overwinters as an adult in sheltered locations such as leaf litter, bark crevices, or nearby debris. As temperatures rise in spring, adults emerge to mate and lay eggs within the leaf tissue, initiating the first generation of the season.

Damage assessment focuses on specific visual cues:

• Stippling or small white spots forming on leaves.
• General chlorosis followed by tissue necrosis.
• Premature leaf drop if infestation pressure is high.
• Secondary growth of sooty mold on leaf surfaces due to honeydew excretion.

Integrated Pest Management (IPM) is essential for controlling this pest. Cultural practices, such as clearing fallen leaves and managing weeds, are effective preventative steps. Chemical control, when necessary, should be timed to target the nymphal stages, which are more susceptible to insecticide applications, while rotating modes of action to mitigate the risk of resistance development.