What kind of animal is the green cabbage insect

The body of the cabbage butterfly is divided into three parts: the head, thorax and abdomen, with 3 pairs of feet, 2 pairs of wings, an exoskeleton, feet and antennae segmented, so the cabbage worm belongs to the insect class in the arthropod animal.

The cabbage butterfly is the larva of the cabbage butterfly, and the reproductive mode of the cabbage butterfly is to lay eggs after mating, and the eggs hatch into larvae - cabbage worms, which first become pupae when they grow up, and then the pupa feathers into cabbage butterflies. With the different living environment, its color is deep and light, the markings are large and small, usually growing at high temperatures, the black spots on the wing surface are dark and the yellow scales in the wings are bright. On the other hand, individuals who develop and grow under low temperature conditions have few black scales and small spots, or disappear completely.

Cabbage butterfly, also known as cabbage white butterfly, larvae, also known as cabbage worm, is the most widespread distribution in China, the most serious harm, often become a pest.

There are as many as 35 known host plants in 9 families, and they are fond of cruciferous plants, especially cabbage, cauliflower, cabbage, and radish with thick leaves. In the absence of cruciferous plants, it can also feed on other host plants, such as Asteraceae, Cauliaceae, Lotus Family, Liliaceae, Purple Bo Chinese Grass Family, Rhinoceraceae and other plants.

Hazard characteristics: larvae bite the host leaves, only eat the mesophyll before the 2nd instar, leaving a layer of transparent epidermis, after the 3rd instar eats away at the leaf holes or missing carvings, when the leaves are all eaten up, only the thick leaf veins and petioles remain, resulting in extinction, easy to cause the epidemic of cabbage soft rot. When the damage is serious at the seedling stage, the whole plant dies at the worst, and the core is affected at the lightest.

The larvae can also burrow into the cabbage leaves to cause damage, not only overeating the cabbage in the leaf balls, but also polluting the cabbage with excreted feces, causing the quality of vegetables to deteriorate, and causing rot, reducing the yield and quality of vegetables. One acre of burial is the most harmful in spring and autumn.

The cabbage worm is a type of butterfly larvae, and the butterfly lays tiny eggs on the cabbage leaf cabbage heart, and after hatching, it is the cabbage worm.

Main types of insect pests of vegetables and applicable pesticide varieties:

1. Diamondback moth, cabbage worm and other pest occurrence crops: cruciferous vegetables. Applicable pesticides: Caixi, Abafenjing, Ruijinte, Weiling Anda, Avermectin, Miman, Thousand Worms.

2. Noctuidae crops: leafy vegetables, sweet potatoes, taro, etc. Suitable pesticides: Tong Pao Lesben, moth special killing, removal, fluorinylurea, green worm once clean, chlorine, strong killing, fast.

3. Aphids, whiteflies Occurrence crops: all kinds of vegetables. Suitable for bulk pesticides: Actay, imidacloprid, flimp aphid, quick kill slag wheel, sweep aphid, attack aphid, insect sweep.

4. Jumping crops occur: cruciferous vegetables. Applicable pesticides: Amar, Ruijinte, a kill, a good clear.

5. Leaf miner flies crops: all kinds of vegetables. Applicable pesticides: fly mite light, Xinke, fly amine, Leidan.

The living habits of cabbage insects: 4 to 5 generations occur in Chengde area a year, and they overwinter on walls, fences, wind barriers, tree trunks, and weed residues near vegetable fields. In the spring of the following year, the adults begin to emerge in mid to late April, and the adults are active during the day, laying eggs while sucking nectar, and roosting on rainy days at night, and the eggs are scattered on the back of the leaves, with an average of about 120 eggs laid by the female.

The egg stage is generally 4-8 days. The larvae have a total of 5 instars, and most of them hatch in the early morning and begin feeding soon after. The non-overwintering generation of mature larvae often pupate on the back of the old leaves or petioles at the bottom of the plant, and spin silk to entangle the pupal body to the attachments; The overwintering generation of mature larvae climbs to a high dryness and is not easy to enter the water to pupate and overwinter.