Insects are garden pests
The plants of the garden are greatly damaged by the apple blossom beetle, strawberry weevil, raspberry beetle, apple moth, gooseberry firefly, and aphids.
In spring, the apple blossom beetle feeds on the buds of the apple trees, and the female beetle lays eggs (one at a time) in the buds. In almost every unblown and already dried bud, one can find either a yellowish legless larva or a pupa. By the middle of summer, beetles crawl into cracks in the bark, and in autumn – under fallen leaves – and overwinter there.
Strawberry weevil damages strawberries, strawberries, raspberries, blackberries. Shortly before the flowering of these plants, the females gnaw a hole in the side of the bud and lay an egg inside. The hole is sealed with a stopper made of excrement and the peduncle is gnawed. In this case, the pedicel breaks, the bud hangs and dries up. The larvae develop, feeding on the contents of the bud, and pupate here. One female damages about 50 buds when laying eggs.
In spring, the raspberry beetle eats holes on the leaves of raspberries, the buds and nectaries of its flowers. Females lay single eggs in flowers. The worm-like larvae that emerge from them bite into the fetus, eat out the drupes of the fruit. Damaged fruits (“wormy berries”) wither and rot. Beetle larvae pupate in the soil.
Gooseberry fire butterflies lay eggs in the buds and flowers of currant and gooseberry. The hatched caterpillars bite into the resulting berries and eat away their contents. During its development, one caterpillar damages about eight berries, which redden prematurely, and the berry bush becomes, as it were, engulfed in fire (hence the “fire”).
In the gardens, the apple moth butterfly is widespread, the caterpillars of which develop in apples. Caterpillars of the last instar hibernate in cocoons under the peeling bark of trees, in cracks of supports. Pupation occurs in the spring. The flight of butterflies usually coincides with the end of the flowering of apple trees. Their females lay eggs at the base of the fruit set.
Insects – forest pests
One of the most dangerous pests of the garden and forest is the gypsy moth. Eggs of this butterfly, similar to pieces of felt, can be found on the lower part of tree trunks, stumps. In the fall, larvae develop inside the eggs and remain in them until spring. In spring, caterpillars crawl out and eat leaves of various trees, bushes and grasses. During the years of mass breeding of this pest, trees in gardens and forests can completely lose their leaves.
In coniferous forests, pine silkworms cause significant damage. During the development period, one caterpillar of this butterfly eats up to 900 needles. Caterpillars damage mainly pine, less often spruce and larch.
On deciduous trees (oak, birch, maple), leaves are damaged by May beetles, and their larvae, which develop in the soil for 3-4 years, gnaw at the roots of young trees.
Weakened trees are attacked by bark beetles, which damage the bark.
The wood of the trees is destroyed by barbel beetles and their larvae.