Why do insects shed their shells and why do beetles shed their shells?

The main reason for insect shelling is the growth limitation and replacement of exoskeletons.

1.The exoskeleton of an insect is made up of a substance called chitin, which is both hard and elastic. The exoskeleton protects the insect's internal organs and can also provide support that gives the insect the ability to move.

However, there is a limit to the size of the exoskeleton, and it cannot expand as the insect's body grows. As a result, when an insect's body grows, the exoskeleton becomes too small to provide adequate protection and support. At this point, insects need to strip off their old exoskeletons in order to grow new exoskeletons that are more suitable for their body size.

2.In addition, damage to the exoskeleton is also one of the reasons for insect shelling. Since an insect's exoskeleton is both rigid and elastic, it can be damaged when the insect is subjected to external pressure or impact.

At this time, insects also need to shed their old exoskeletons in order to grow new exoskeletons to protect their bodies.

Overall, the main reason for insect shelling is the growth limitation and replacement of exoskeletons. This process is hormone-regulated and involves the coordinated action of ecdysone, juvenile hormone, and brain hormones.

The insect is constantly growing, but its shell does not grow, so after a certain point, it secretes ecdysone and thus molts.

Beetle arthropods belong to exoskeleton animals, and the external chitin bones cannot grow with the growth of the beetle, so they can only grow up by shedding their shells again and again and growing a new larger shell.

Extended Information:1Like most insects, cicadas do not have a skeletal system, and the shell functions as a skeleton on the body. But the shell does not continue to grow, so when the golden cicada grows up, this shell will limit the growth, so it needs to be replaced with a new shell, and molting is the way to change the shell.

At a certain time, the larvae of the golden cicada will molt once, for a total of five times. When it crawls out of the ground, it will shed its shell for the last time, and the golden cicada will have the ability to fly after the shelling.

2.After four molts, the cicada will choose to emerge from the ground in the evening around the summer solstice. Choose the nearest tree, climb to a certain height, the body will be fixed, do not move, and then begin to "shell", generally the shelling of the golden cicada is concentrated between 9-10 o'clock in the evening.

After the golden cicada was fixed on the trunk of the tree, its body did not move, and a hole began to crack above its head, and its body slowly came out. It takes about 1 hour for the golden cicada to shed its shell, and it will not be able to fly after shedding, and after about 1 hour, the body will slowly turn black before it has the ability to fly.

3. Got it. Cicadas live in temperate to tropical regions of the world (about 2,000 species of cicadas have been recorded). Some species found in desert areas will expel excess water from the tergum when the body temperature is too hot, which will cool and dissipate heat.

Crab crab (páng xiè) belongs to the class molluscs, decapods, and is a crustacean whose body is protected by a hard shell and breathes by gills. Taxonomicly, it is the same animal as shrimp, lobster, and hermit crab.

The vast majority of species of crabs live in the sea or near the sea, but some inhabit freshwater or land. Common crabs include pike crab, open sea pike crab, blue crab and Chinese mitten crab (river crab, hairy crab, clear water crab) and so on. Shrimp.

Shrimp (shrimp) is a kind of arthropod living in the water, belonging to the arthropod crustaceans, there are many species, including Antarctic red shrimp, green shrimp, river shrimp, grass shrimp, prawns, prawns, lobsters, etc. Shrimp has a high therapeutic nutritional value, can be steamed, fried and other practices, and can be used as Chinese herbal medicine.

The beetle sheds its shell because the beetle changes from a larva to a pupae, and the pupa generally does not move and needs protection, so it has a relatively hard shell; Then, the pupae become adults again, and the shell becomes a burden again and must be removed.

The body is growing, but the shell is not growing, and only the original shell can grow up.

If you don't shed your shell, you can't continue to grow, and it's a truth that your clothes don't fit when they're small.

This is also the process of his metamorphosis.