Type of pest: Pest of essential oil crops, a pest of fruit crops
Row: Equine – Homoptera
Family: Cicadas – Cicadellidae
Distributed everywhere. It damages apple, pear, quince, plum, cherry, sweet cherry, blackthorn, bird cherry, roses, raspberries, wild strawberries, etc. The main fodder plant in natural conditions is wild rose. The adult is 3-3.5 mm in size, the body is narrow, slender; elytra pale yellow with a greenish pearly sheen, exceed the length of the abdomen; the anterior chairman is widely rounded; antennae long, bristle-shaped, eyes convex, dark; pronotum and scutellum slightly darker than wing; hind tibia tetrahedral, with many spines. Egg size 0.75? 0.2 mm, white, translucent, arachnid, curved. Larvae of the 4th and 5th centuries are yellow-white, with well-developed wing covers; agile, jump well.
Eggs hibernate in the bark of young rosehip shoots and roses, more often at the base of buds and forks of branches. An insignificant part of the pests can winter on apple trees, pears, and other Rosaceae.
Larvae regenerate during the period of budding – in late April – early May. The first generation develops 25-30 days. Inspired cicadas migrate from rose hips and roses to fruit and berry crops for 10-15 days. Only one spring generation develops on rose hips and roses. Females of summer generations lay eggs in the middle and lateral veins on the underside of the leaf. Fertility – up to 50 eggs. Larvae pass in their development for five centuries.
Adults and regenerated larvae pierce the epidermis from the underside of the leaf, inject saliva enzymes into the tissue and suck out the juice. On the upper side of the damaged sheet, pale, blurry spots appear that give the surface a marbled appearance, especially along the edges of the sheet. Leaves dry and curl. Heavily damaged trees give a slight increase, their yield is reduced, the fruits are smaller, frost resistance drops sharply. Two to three generations develop over a season. Adults occur before the onset of frost. In September and October, the circadian plants return to the dogrose and rose, where the female, using the ovipositor, makes a horseshoe-shaped incision in the bark and lays one egg. The bark at the egg-laying site is blown away and darkens.
Fruit and berry crops also damage the red cicadas, yellow cicadas, red-winged cicadas, and others. The number of cicadas limits the number of parasites and predators. In cool and rainy years, the mass death of the pest from diseases is observed.
Protective measures. If one or two cells populated by a circadian tree are found on a tree, it is necessary to spray with insecticides. Do not allow rosehip plantations near gardens and berry plants. Autumn tillage in the aisles and circles to create adverse conditions for the wintering of cicadas – red, yellow, red-winged.