Pest Type: Currant and Gooseberry Pest
Row: Lepidoptera – Lepidoptera
Family: Moths – Incurvariidae
It is found everywhere. Damages red, white, less often black currants.
Butterfly with a wingspan of 13-16 mm; fore wings yellow-brown with a purple tint, on each wing three bright spots; the chairman is yellow; hind wings gray-brown, with long fringe. Egg size 1-1.2 mm, white. The caterpillar of the first age is red, of middle age – yellow-brown, which completed development – dirty green; 9-12 mm long, on the body small warts with light hairs; the head and chest shield are black, shiny, the anal shield is rusty gray. Pupa – 8-10 mm, light brown.
Caterpillars of the first age overwinter in dense white cocoons under the lagged bark at the base of old shoots and hemp. After the first molt, the caterpillars rise to the tops of the branches, which heat up significantly during the day. The output of the caterpillars coincides in time with the phenophases of the extension of the kidney scales and lasts 5-8 days. Caterpillars bite into the middle of the kidneys, where they feed. Inside the first damaged kidney, the caterpillars molt three times and pass to neighboring kidneys. One caterpillar during its development damages 4-7 kidneys. Damaged buds do not bloom and dry up, less often give ugly leaves.
In late April and early May, during the period of bud extension – at the beginning of flowering, caterpillars pupate at the base of the bushes, less often inside the buds. After 10-12 days, butterflies fly out, which with the help of an ovipositor lay one egg inside a green berry. Fertility – 50-60 eggs. Caterpillars revived after 6-8 days, for several days they feed on seeds inside the berries, after which they go to wintering places. Annual generation.
Protective measures. Cutting dry shoots, old stumps, harvesting and burning plant debris. Treatment with insecticides in the presence of 3-5 caterpillars wintered on one bush.