When was the cicada turtle unearthed?

A cicada, a cicada, is about to break through the ground. Generally, in warm spring, larvae move up and down in the soil, sucking the juice from the roots of plants, and when autumn and winter come, they will go deep into the soil to avoid the cold.

The scientific name of cicada is cicada, which is a representative species of cicada. The male's abdomen has a sound generator, which can constantly make sharp sounds. The female doesn't make a sound, but she has a hearing device in her abdomen. Larvae live in the soil, suck the roots of plants, and adults eat the juice of plants. Cicada is an incomplete metamorphosis, from egg to nymph, after molting several times, it becomes an adult without pupa.

The growth and transformation of cicadas;

1. Grasshopper larvae live in 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.

At the end of February and June, the larvae began to emerge into adults, and the longest life span was about 60 ~ 70 days. In late July, female adults began to lay eggs, and the peak of laying eggs was in early and middle August, and most eggs were laid on branches with a thickness of 4 ~ 5 mm.

3. When female adults lay eggs, they first pierce the bark with an ovipositor, insert the ovipositor into the branch tissue to form claw-like egg holes, and then lay eggs in the xylem. Each spawning hole has 6 ~ 8 eggs. There are more than 90 cicada eggs on a branch.

4. The laid eggs will hatch in the middle of June of the following year. After hatching, the larvae fall from the branches to the ground and then drill into the soil. Larvae live in soil for several years (cicada larvae in forests on the east coast of North America can live underground for the longest time 17 years) and molt for five times.

When the spring is warm, the larvae move upward and suck the juice from the roots of plants. When autumn and winter come, they go deep into the soil to avoid the cold.

6. The body of the larva is mostly white or yellow, which is very soft and the forehead is obviously enlarged. The mature larvae are hard, yellow-brown, and have developed wing buds. There is an molting line from the top of the head to the center of the chest and back, which is the cracking line of adults when they emerge.

Medicinal value:

Cicada, whose skin is called cicada slough, is rich in chitin, isoflavone pterin, pterin and adenosine triphosphatase, and is often used to treat cough caused by exogenous wind and heat and hoarseness. Sore throat. Rubella itching, conjunctival congestion, tetanus, convulsion, night crying, etc. According to China Pharmacology, it also helps to strengthen yang, relieve cough, promote fluid production, protect lung and kidney, resist bacteria, lower blood pressure, treat alopecia and inhibit diseases.