Entomology, what are the shapes and habits of cicadas?

The appearance and habit of cicadas in the story of insects and insects are: the larvae of cicadas live in the soil and suck juice from the roots of plants, weakening trees and sprouting branches? Dead, affecting the growth of trees. Cicada larvae live in the soil all their lives. When it is about to emerge, drill out of the ground at dusk and night, climb to the tree, and then grab the bark to shed its skin and emerge. When black cracks appear on the back of cicada pupa, the molting process begins. The whole process takes about an hour. At the end of June, larvae began to emerge into adults, and the longest life span was about 60 ~ 70 days. Female adults began to lay eggs in late July, and the peak of laying eggs was in early and middle August. Most of the eggs were laid on branches 4 ~ 5 mm thick. In summer, they crowed loudly on trees. It was harmful to trees to suck tree juice with acupuncture mouthparts. Larvae lived in the soil and sucked tree root juice. Commonly known as cicada, an insect. The largest cicada is 4 ~ 4.8 cm long and its wings are dark brown at the base. It is harmful for trees to crow loudly in summer, and it is harmful for trees to suck tree juice with acupuncture mouthparts. Larvae inhabit the soil to suck root juice. The shell of cicada can be used as medicine. Cicada is a large herbivorous insect, usually about five or six centimeters long. Their needle-like hollow mouths can pierce trees and suck sap. There are also different kinds of cicadas with similar shapes and different colors. Cicada has three less sensitive eye spots between its eyes and a simple supporting tubule on its wings. These are the primitive characteristics of ancient insect populations. The high note in the cicada family is a cicada called "double drummer". There are large ring-shaped vocal organs on both sides of its body, and a disk that can be opened and closed inside and outside is in the middle of its body. The opening and closing speed of the disc is very fast, which is the reason for shaking cicada. This sound lacks change, but it is much louder than the call of the jungle canary. Cicadas spend the first two or three years of their lives underground, maybe longer. In the meantime, it sucks liquid from the roots. Then one day, I broke out of the ground and found a tree to climb with my instinct to survive. After several years of slow growth, cicada pupa climbed out of the ground as an energy storage body. Its front paws for digging holes can also be used for climbing. When black cracks appear on the back of cicada pupa, the molting process begins. Molting is controlled by hormones. The front legs of the cicada pupa are hooked, so that when the adult comes out of the empty shell, it can be firmly hung on the tree. It is very important that the cicada pupa must face the tree vertically. This is for the normal development of adult wings, otherwise the wings will be deformed. Cicada, based on the pupa shell, slowly releases itself, just like climbing out of a pair of armor. The whole process takes about an hour. When the cicada's upper body is free, it spreads its wings upside down. At this stage, cicadas' wings are very soft, and they spread them through body fluids. The body fluid tube spreads its wings by the pressure of liquid. When the liquid is pumped back into the cicada, the spread wings have become hard. If the cicada is disturbed in the process of spreading its wings, it will be disabled for life and may not be able to fly at all.

Entomology is a French entomologist and writer JeanHenri casimir Faber (Jean Henri? Casimir? Fabres, 1823- 19 15) is a full-length popular science literature with ten volumes. Also known as insect world, insect story, entomology notes or insect story.

This work truly records the life of insects and expresses their spirituality in their struggle for survival. It not only records Fables' research achievements in detail, but also records Fables' motivation, life ambition, knowledge background, living conditions and his infinite love and pursuit of nature. The text reads as follows:

I have a good environment to study the habits of cicadas. Since the beginning of July, cicadas have occupied the trees in front of my house. I am the master of the family, but it is the ruler outside. With its regularity, it is always not very quiet anyway.

Cicada first appears in the summer of solstice every year. There are many small round holes on the exposed road surface, and the holes are flat on the ground. Cicada larvae crawl out of these round holes and become complete cicadas on the ground. Cicadas like places with dry tops and plenty of sunshine best. Larvae has a powerful tool that can penetrate dry soil and sand. I'm going to check their abandoned storage room and dig it with a knife.

This small round hole is about an inch in diameter and there is no soil around it. Most earth-digging insects, such as scarabs, always have a mound outside their nests. This difference is due to their different working methods. The golden pheasant's work began in the cave, so the excavated waste was piled on the ground. Cicada came up from the ground when it was a larva, and its last job was to open the door. Because the door has not been opened, it is impossible to accumulate dirt at the door.

Cicada's tunnels are mostly fifteen or sixteen inches deep, with a wide bottom and a completely closed bottom. Where did the soil move when the tunnel was built? Why won't the wall fall down? Everyone thought that crawling up and down with their claws would collapse the soil and block the house. In fact, it acts like a miner or a railway engineer. Miners support the tunnel with pillars, and railway engineers make it strong with rotating walls. Cicada is as clever as they are, painting the walls of the tunnel with plaster. It has a very viscous liquid hidden in its body, which can be used as a plaster. Crypts are usually built in the roots of plants containing juice in order to obtain juice from the roots.

It's important to be able to climb up and down at random in acupoints. It must know what the weather is like outside before it can decide whether it is time to go out in the sun. So it took weeks, even months, to make a circle of whitewashed walls so as to be suitable for climbing up and down. Leave a layer of finger-thick soil at the top of the tunnel to resist the bad weather outside until the last moment. As long as there is some news of good weather, it will climb up and use the thin cover on the top to investigate the weather.

If it is in the delicate larvae peeling, it is estimated that there is rain or storm outside, which is the most important thing. It carefully slips under the warm and tight tunnel. If the climate looks warm, it will break the ceiling with its claws and climb to the ground.

Its bloated body contains a kind of juice that can resist the dust in the cave. When it digs, it sprays juice on the soil, turning the soil into mud, so the walls are softer. The larva presses it up with its heavy body, so that the soil is squeezed into the cracks in the dry soil. So when it appears on the ground, there are often many wet mud spots on its body. Cicada larvae first appeared on the ground, and often wandered around nearby places, looking for a suitable place-a small dwarf tree, a bunch of thyme, a wild leaf, or a shrub branch to shed its skin. Climb up when you find it, hold it tightly with your front paws and don't move at all.

So its skin began to crack from its back, revealing a light green cicada body inside. The head comes out first, then the straw and front legs, and finally the hind legs and folded wings. At this time, the tail was removed and everyone came out. Then, it performed a strange gymnastics. Jump and turn around in the air, hang your head upside down, straighten your wrinkled wings and try to open them. Then with an almost invisible movement, try to turn it up and hook its empty skin with its front paws. This action disengages the tail end from the shell. The whole process takes about half an hour.

This cicada, which has just been released, is not very strong in the short term. Before its weak body has energy and beautiful colors, it must be bathed in sunshine and air. Hanging on the shell with front paws, swaying in the breeze, still fragile and green. It was not until it turned brown that it was as strong as an ordinary cicada. Suppose it occupies the branches at 9: 00 in the morning and will not leave the skin until about 12: 30. Empty shells hang on branches, sometimes for a month or two. ?

Cicada's egg?

Common cicadas like to lay eggs on dry branches. It chooses the smallest branch, as thick as hay or pencil, and it is often a twig that tilts up and almost dies.

It found the right twig and stabbed a row of small holes in its chest with a sharp tool. The formation of these holes is like stabbing the fiber obliquely with a needle, tearing it apart and slightly irritating it. If not disturbed, a dead branch will often make thirty or forty holes. Eggs are laid in these holes. Small holes become narrow roads, and they slope down one by one. A small hole lays about ten eggs, so it lays about three or four hundred eggs in total.

This is a good family of insects. The reason why it lays so many eggs is to defend against some special danger. There must be a lot of eggs, and there may be survivors after they are destroyed. I observed it many times before I knew what the danger was. This is a small gnat. Compared with it, cicada is simply a huge monster.

Like cicadas, gnats also have piercing tools, which are located under the body near the middle and protrude at right angles to the body. As soon as cicada eggs are laid, gnats want to destroy them at once. This is really a disaster for the cicada family. The monster can crush them in one step, but surprisingly, they are extremely calm and have no scruples in front of the monster. I once saw three gnats staying there in turn, ready to plunder an unlucky cicada.

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