What kind of bug is this? Tiny, just bit me.

Island gall midge belongs to LEPIDOPTERA, and it is an insect of the genus gall midge in the family Coccidae. Distributed in Beijing, Tianjin, Hebei, Shandong, Jiangsu, Anhui, Jiangxi, Fujian, Hunan, Liaoning, Jilin, Heilongjiang, Inner Mongolia, Shaanxi, Ningxia and other places. Hosts are hawthorn, begonia, ginkgo, magnolia, clove, cherry blossom, elm leaf plum, crape myrtle, manchurian ash, Toona sinensis, yellow thorn rose, five-pointed star, Luan tree and so on. Larvae feed on xylem of branches and flowers and trees, and dozens to hundreds of them are clustered in boreholes, resulting in porosity, which is obviously different from that of longicorn beetles (longicorn 1 boreholes 1 insects). Boreholes of moths are connected with each other, and spherical insect droppings are connected with wires outside the boreholes. Light causes the wind to break branches, while heavy causes the flowers and trees to die gradually, which seriously affects the effect of urban greening and beautification.

gingkgo

Wood moth with small line angle

Latin scientific name

Island black-tailed catfish

Another name

Xiao Mu brown moth

boundary

animal kingdom

door

arthropoda

Listen to the appearance characteristics of pronunciation

imago

The body length is about 22 mm, the wings are about 50 mm, the body is grayish brown, and there are many short black lines on the wings.

egg

This watch has a net pattern.

larva

It is 35 mm long. The back of the body is bright red, the abdominal internodes are milky yellow, and there are oblique B-shaped black spots on the chest back plate.

pupa

Pupa-shaped, brown, slightly curved to the abdomen. [ 1]

The regularity of occurrence, listen to the speech

This insect occurs every two years (spanning three years). Overwintering in the trunk as larvae. In March of the following year, the larvae began to revive. The pupation time of larvae is very irregular, from late May to early August, the pupation period is about 20 days. The emergence period of adults is from June to August. When the adult emerges, the pupa shell is half exposed outside the emergence hole, and the adult has phototaxis and comes out at night. Eggs are laid in cracks in bark or various scars, and the egg pieces are huge and vary in number. The egg period is about 15 days. Larvae like to live in groups. During the larval damage period from March to June, both young and old larvae overwinter in the trees. The old larvae pupate in late May of the third year. When the adult emerges, the pupa shell is half exposed outside the emergence hole. [ 1]

larva

Prevention and treatment: Listening to sounds

1) Strengthen quarantine. Strictly go through quarantine procedures when transporting flowers and trees.

(2) trapping and killing adults. Trap and kill adults with environmentally friendly agricultural and forestry insecticidal lamps or black light lamps.

(3) other prevention and control. Every year from March to May, from 9 to 65438+10, the insect state is relatively neat, which is beneficial to various prevention and control, such as injecting aqueous suspension of Spodoptera exigua with a concentration of 30,000 per milliliter; Or inject Beauveria bassiana solution; Or inject 10% anlubao 4000 times solution. Inject into the lower hole. After the flowers and trees less than 3 meters are killed, they can be prevented by inserting poison sticks into the excrement discharge holes. The above methods are beneficial to protect natural enemies, such as wasps, parasitic flies, woodpeckers, lizards, swallows and so on. [ 1]

reference data