2. Drosophila orientalis, native to India and Malay Peninsula, is the main pest of fruit trees in the Pacific region.
3. American white moth, also known as American moth, autumn curtain caterpillar and autumn curtain moth, belongs to Lepidoptera moth family and is a worldwide quarantine pest. It mainly harms fruit trees, street trees and ornamental trees, especially broad-leaved trees, causing serious harm to crops, trees and fruit trees. At present, it has been included in the first batch of alien invasive species in China.
4. Aphidea is an herbivorous insect, including all members of Aphidea. At present, there are about 4400 species of aphids in 10 families, most of which belong to Aphidae.
Aphids are also one of the most destructive pests on earth. About 250 of them are serious pests in agriculture, forestry and horticulture. The size and length of aphids vary from 1 mm to 10 mm.
5. Grasshoppers, commonly known as "grasshoppers", belong to Orthoptera, including Tetrigoidea, Acridoidea and Acridoidea. There are more than 65,438+00,000 species in the world, and more than 65,438+0000 species in China, which are distributed in tropical and temperate grasslands and desert areas all over the world.
Locusts mainly include locusts and earthworms. There are three kinds of migratory locusts in China: Locusta migratoria manilensis, Locusta migratoria manilensis and Locusta migratoria manilensis. Among them, Locusta migratoria manilensis is the most widely distributed in China, with the most serious damage, which mainly harms Gramineae plants and is an agricultural pest.
Extended data:
Pest classification:
1. leaf-eating pests
Most of them feed on trees and lawn leaves, which can be eaten up when they are rampant, weakening the tree potential, providing suitable conditions for the invasion of stem-eating pests such as longicorn beetles and bark beetles, which not only affects the normal growth of plants, but also reduces the beautification function and ornamental value of plants. This kind of pests mainly include Lepidoptera's pocket moth, spiny moth, big silkworm moth, foot moth, stem moth, dead leaf moth, ship moth, American white moth, Sophora japonica, butterfly, Coleoptera's leaf beetle, HYMENOPTERA's sawfly and so on.
2. Needle-sucking pests
Needle-sucking pests are a large class of garden plant pests. They are small in size, and often have inconspicuous symptoms in the early stage, which is easy to be ignored. However, they are numerous, often living in groups on twigs, leaves, buds, buds and fruits, sucking plant juice and plundering their nutrition, which leads to the curling of leaves and flowers and even the withering or death of the whole plant. At the same time, it can induce sooty blotch, and sometimes pests themselves are the vectors of viral diseases.
These pests mainly include aphids, scale insects, whiteflies, psyllids, leafhoppers, bedbugs, thrips and mites.
3. Insect-eating pests
Insect-eating pests are destructive pests of garden plants, because of their hidden life, few natural enemies and strong individual adaptability. They eat branches with larvae, which not only destroys the transportation organization and causes plant death, but also forms criss-crossing insect paths in xylem, reducing the economic value of wood.
This kind of pests mainly include Cerambycidae of COLEOPTERA, Cerambycidae of COLEOPTERA, Cerambycidae, Elephantidae, Formicidae of Hymenoptera, termites of Isoptera, etc.
4. Underground pests
Underground pests mainly inhabit the soil and feed on newly sprouted seeds, young roots, tender stems and leaves of seedlings, which bring great harm to seedlings and even lead to seedling shortage and broken ridges. There are many kinds of this kind of pests, mainly including Orthoptera grubs, crickets, Lepidoptera cutworms, Coleoptera grubs, Flammulina velutipes, Diptera species flies and so on.
reference data
Baidu encyclopedia-pests