When I was a child, I ate Dongdong, which is said to be a black-eyed cow (Darkmouth had pliers and even his hand was broken). Who knows how to raise it?

To compact, so that there is no gap between sawdust and wood blocks, maintain humidity, wet by hand but not dripping.

Let the water flow down. Of course, the bigger the better. If there are two, don't put them together, it will hiss.

The life history of longicorn beetles varies from species to species, and some of them complete 1 generation within 1 year, and some complete 1 generation within 2 ~ 3 years or even 4 ~ 5 years. In the same area, the food intake and the degree of dryness and wetness of the damaged plants affect the growth, development and generation of larvae. Generally, larvae or adults overwinter in the trunk. After eclosion, some adults need supplementary nutrition, such as pollen, twigs, leaves, bark, tree juice or fruit, fungi and so on. Some don't need to be supplemented with nutrition. The life span of adults is generally 10 days to 1 ~ 2 months; However, the adults who overwinter in the pupa room can reach 7-8 months, and the life span of males is shorter than that of females. The activity time of adults is related to the thickness of compound eyes. Generally, the small eyes are thick, mostly active at night, and have phototaxis. Small eyes and thin face, more activities during the day. The way adults lay eggs is related to the form of mouthparts. Generally speaking, adults lay eggs directly into rough bark or cracks when laying eggs. The adult of the lower mouth first bites a notch in the trunk, and then lays eggs in the notch. Anoplophora longicorn mainly feeds on larvae, which has the longest life span and the most serious damage to the trunk. When the eggs hatch into larvae, the early larvae eat the trunk, first under the bark, and then get into the xylem when they get older. Some species only live under the bark and don't eat into the xylem. Larvae move in trunk, and the shape and length of feeding tunnel vary from species to species. Larvae feed on tree trunks or branches, and after a certain distance, they open to the bark as pores to push out excrement and sawdust. When the larvae mature, build a large pupa room, with both ends blocked with fibers and sawdust, where they pupate. The pupal stage is about 10 ~ 20 days.

Anoplophora longicorn larvae eat trunks and branches, which affects the growth and development of trees, weakens them, leads to the invasion of germs and is easily broken by the wind. When the damage is serious, the whole plant dies, the wood decays and the process value is lost.

Longicorn beetles are mainly pests of woody plants, and feed on trunk, branches and roots in larval stage. Some harmful herbs, larvae live in stems or roots, such as Anoplophora Daphne, Anoplophora guatemala and so on. Individual species, such as cotton beetles, are harmful to cotton beetles. There are a few species, the larvae do not live in plant tissues, but feed on the roots in the soil, such as big-toothed sawnail, grass nail and so on.

At present, we don't know much about the feeding habits of adults, but we know that they feed on pollen, tender bark, twigs, leaves, roots, sap, fruits, fungi and other different habits. Generally speaking, Anoplophora alternata often feeds on pollen. Long-horned beetles often eat tender bark, twigs and leaves. Adults of other subfamilies also feed, and some may not. The same Iacone, the variation of eating habits is also great.

The life history of longicorn beetles varies from species to species, with one year completion 1 or two generations, two years, three years or even four or five years completion 1 belt. The life history of the same species in different regions sometimes varies greatly. For example, it takes three years to complete the Jiangsu generation and two generations in Guangdong. It is difficult to observe the life history of larvae because of their hidden life. Moreover, the age, health, humidity and other conditions of host plants have great influence on the growth and development of larvae. Bad conditions often lead to diapause of larvae, which greatly prolongs the life generation. Therefore, the same species may show different developmental processes in the same area. There are many records about longevity larvae in the literature. They are mostly made of wood. A few years later, it was suddenly found that there were still surviving larvae, or the longicorn suddenly appeared, proving that it had lived in wood for many years. There have been many such examples, which prove that the larvae of Anoplophora longicorn can live for 20 or 20 years, and the highest two records are 40 years and 45 years.

Anoplophora longicorn generally overwinters as larvae, or overwinters as adults in pupa rooms, that is, adults emerge in autumn and winter of the previous year and stay in pupa rooms until spring and summer of the next year. The life span of adults is generally short, ranging from ten days to one or two months, but adults who overwinter in pupa rooms may reach seven or eight months. Men's life expectancy is generally shorter than that of women. The activity time of adults also varies from species to species, some of them are active in the sun during the day, and the most active one is Anoplophora alternata; Others are active at night or on cloudy days, or they can be active all night.

There are two main ways to lay eggs. One is that the female insect bites the bark (especially the longhorn beetle) with her upper jaw before giving birth, and then inserts it into the ovipositor tube to lay one egg in each hole, and some of them lay multiple eggs. The shape and size of spawning holes formed in this way are often different among species, and some of them are remarkable, which can be used as an indicator for searching and killing eggs in prevention and control. Another way to lay eggs is not to bite holes first, but to lay eggs directly in the cracks of bark with an ovipositor. In a few cases, it also comes from the smooth part of the branch. Native species lay eggs in the soil.

The newly hatched larvae usually eat under the skin first, and then go deep into the wood after a long or short period of time. Some species only rot under the skin. Some species are not deep and only harm sapwood. Many species invade the trunk or thick branches, some in the roots and some in the branches. Larvae will drill all kinds of tunnels when they eat, up or down, left or right, curved or straight, which varies from species to species, but there are also many kinds of tunnels that are very irregular. Tunnels are often filled with insect droppings and fiber sawdust. Sometimes insect dung and sawdust are discharged from the wormhole, and sometimes tree juice flows from the victim's body. Mature larvae often build a wide tunnel as a pupa chamber, and both ends are closed with fiber sawdust to pupate in it.

The host range of longicorn beetles also varies with species. Many species, such as longicorn beetles, mulberry longicorn beetles, Yunnan longicorn beetles, etc. , has a wide range of feeding habits and can harm many plants in different families. Others are limited to the same family or similar genera, such as the big-toothed sawfly that harms gramineous plants, and the longhorn beetle that harms camphor trees and nanmu.