How to prevent Lagerstroemia species

Lagerstroemia species, also known as Lagerstroemia spinosus, belongs to the order Homoptera, Acridoidea, Polygonaceae.

There are several species of female adults of Lagerstroemia speciosa. The winged female has a yellow body, black markings, a wide triangle, a length of 2.1 mm, and a width of 1.1 mm. The abdomen was light yellow, with 1 pair of raised black tumors in each section. The second pair was the largest and the base was connected. The back of the body has markings, and the tip of the antennae and the whip are black. The wingless, female, female body has a yellow-green body with a body length of 1.5 mm, a round body shape, black spots on the cloth, and orange-yellow belly. The winged females are similar to the wingless females. The body is slightly longer, with dark brown markings on the back and a black horizontal patch on the second quarter of the abdomen.

Lagerstroemia speciosa can occur in more than 10 generations a year in Jiangsu, Zhejiang, Shanghai and other regions, and winterize with eggs in buds, buds, shoots and branches. In the spring of the following year, when the new shoots of Lagerstroemia crassipes sprouted, they began to show birthless oysters. After June, the larvae continued to rise, and as the temperature increased, the larvae continued to grow and move to fly.

The damaging effect of this insect on crape myrtle occurs every year. It is often the back of the young leaf is covered with pests, the new shoots are distorted after damage, the young leaves are curled up, uneven, affect the formation of flower buds, and shorten the inflorescence, even without flowers. It will induce coal pollution and spread viral diseases.

In combination with pruning in the winter, remove pests and branches, thin branches, and dense branches. Can be sprayed with 10% decantyl WP 1500 times, or 50% decanoate EC 1000 times, 40% omethoate EC 1000 times, and 80% DDVP 1000 times.

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