Cicadas are sucking parasites. There are more than 40 species. In vineyards, the most harmful are the grape leafhopper and the variegated leafhopper. Both adult insects and larvae are parasites.
Leafhoppers overwinter on any plant debris.
Before the vine blossoms, they feed on weeds, then move on to young shoots. With their sucking mouthparts, they pierce the skin and absorb leaf tissue. On the outside, the puncture site looks like a whitish dot.
The greatest harm is caused by pests to berries.
The puncture sites become open gates for all sorts of infections - fungal and bacterial.

On average, they are 3-6 mm long and have a sharp wedge shape.
On the triangular, wide head are two short tentacles and two large eyes.
The hind legs are designed like those of a locust, so that cicadas can jump.

In case of moderate and high intensity of damage and settlement of leaves by pests during the period of development of young nymphs - one of the highly effective insecticides Aktara VDG, Voliam, Flexi.
In case of extended period of nymph hatching and high number of leafhoppers, the treatment should be repeated after 10-12 days;