Red-necked celestial bull is also known as peach-necked celestial bull, red-necked celestial bull, the main harm is mainly peach apricot. Secondly, it also endangers apples and pears, and the branches of the fruit trees are hollow after being killed. The tree is significantly weaker. Resulting in incomplete branches. Even the whole plant died.
First, morphological characteristics. Adults are black and shiny. Individuals are larger. The forebreast is brownish red is its main feature. There are five bumps on the back of the chest. Female antennae are about 1/2 longer than the body. The head wing sheath and abdomen have a black luster. The antennae have a blue sheen at the polar abdomen. And there are fine transverse wrinkles, larvae. Hours milky white. When ripe, it is yellowish white, the head is small black and brown, and there is a brown square bulge in the middle of the leading edge.
Second, life history and habits, two years occurs in a generation. Larvae overwinter inside the trunk. Cocooned pupae in April of the calendar year, individual adults appear in late May. June and July are the peak of adult occurrence. Adults love sunlight. Lay eggs on the branches and backs of the leaves. After ten days, the eggs are emulsified into larvae, which are first fed under the cortex. After turning into xylem is not harmful. After the branches are damaged, they are covered with many worm passages. Severe when the formation of branches dies.
Three, 1, artificial capture of adult insects in the adult stage between June and July.
2. Before the adults appear, the trunk is painted white to prevent spawning. And carry out pharmaceutical prevention and treatment. Spraying on trees to kill eggs.
3, September with rotten cloth strips. Or rotten cotton mushrooms stuffed into the worm road with mud to seal. Kill the larvae.