Pear Bug

Pear Bug

Pest Type: Fruit Pest

Row: Hemoptera – Hemiptera

Family: lace workers – Tingidae

It is found everywhere. Damages a pear, an apple tree, a hawthorn, less often other fruit crops.

The adult is 3-3.5 mm long, the body is flat, round, with a crest-shaped increase in the middle, prothorax with leaf-shaped outgrowths on the sides; elytra leaf-shaped wide, bright, with lace pattern; antennae are long, thin; legs are light yellow; eyes are red; the female has an ovipositor, consisting of two dusty processes. The egg is 0.4 mm in size, oblong, bulb-like curved, gray, somewhat pointed to the apex. Larva 0.6-2.3 mm long, flat, oblong, whitish, with a brown head and thin long spikes on the sides of the body.

Immature adults hibernate among fallen leaves, in cracks of the bark. Especially a lot of them are collected in orchards. Bedbugs leave the wintering places rather late, after the leaves of the apple and pear leaves, appearing on trees in the south of late April – early May, in the forest-steppe – in mid-May. In warm weather, they can fly long distances. Additionally, they feed by sucking the juice from the leaves. Wintering females live long, in connection with which the laying of eggs lasts 1.5-2 months.

Fertility averages 200-300 eggs. Females lay eggs in groups of 7-10 pieces on the underside of the leaves, introducing them into the tissue using the ovipositor. Embryonic development continues in the Forest-Steppe 28-35, in the south – 20-28 days.

A massive revival of larvae takes place in the Forest-Steppe in July, in the south – in the middle of June. As they regenerate, the larvae accumulate in a tight group on the underside of the leaf and, remaining inactive, suck out the juices. This place is determined by a whitish spot over time. Damaged leaves become discolored, contaminated with sticky feces and molt skins. Larvae develop over 20-25 days, passing six centuries.

In the forest-steppe, images that appeared continue to feed and, with the onset of cold weather, go to wintering places. In the steppe zone of Russia, they give the second generation, the development of which takes place in July – August. The damage caused by bedbugs is most sensitive in dry years. In the case of significant damage, the leaves dry and fall, the trees stop growing, the fruits become small and often fall. Winter hardiness of trees decreases.

During the years of mass reproduction, the number of pear bugs is reduced by carnivorous arthropods and mainly bugs. The laid eggs of a pear bug infect riders. In wet weather, a significant part of the larvae perishes from fungal and bacterial diseases.

Protective measures. Prioryuvannya fallen leaves in the late autumn. With a population of over 200 larvae and nymphs of the first generation and more than 300 larvae of the second generation per 100 leaves – spraying trees with insecticides.