The life of cicadas is divided into three stages: egg, wakaba, and adult. When the female cicada lays eggs, she inserts her needle-like ovipositor into the bark of the tree, usually directly into the shoots of the tree. More than 100 eggs are laid in each shoot. Since cicada egg-laying destroys the sap supply of the branch, this shoot may soon dry up and fall to the ground. Then, the eggs hatch out and the worms emerge from the branch, burrow into the ground, find a nearby root, and with one eye on the other, start sucking the sap from the root.

The life cycle of cicadas is 1 year, 4 years, 12 years, 13 years, 17 years and so on, depending on the region and species, for example, in North America, the cicada is 17 years old, but in South America, it is 13 years old.

Second, cicada habits

Cicadas generally 3 to 4 years to reproduce a generation, to eggs and worms in the branches of the wood and soil overwintering. After maturing, the wako emerges from the ground in June to July. The time of their emergence is often from 8 p.m. to about 6 a.m., with 9~10 p.m. at night as the peak time of emergence.

After emerging from the ground, the insects crawl to nearby trees to feather, taking about 2 hours to complete the feathering. When the adults emerge from the shell, the wing veins are green and the body is light red. Later, the wings gradually spread out, and both the wing veins and body color gradually become darker, and they gradually climb up the tree before dawn.

After adults have fledged, they first sting and suck plant sap to replenish nutrients, and then begin to call, which is designed to attract female cicadas.

Male cicadas usually begin to chirp when the temperature is 20 degrees or more, and when the temperature reaches 26 degrees or more, many male cicadas chirp together in what is known as a swarm. When the temperature reaches 30 degrees or more, these male cicadas not only chirp for a longer period of time, but also more often, and their voices are called louder.

This chirping cicadas have a certain degree of group living and group migration, at 8~11 a.m., groups migrate from big trees to small trees; at 6~8 hours in the evening, they migrate from small trees to big trees in groups again.

Adults have a strong ability to fly, but generally only for short distances. If the trunk is shaken, it has a certain degree of phototropism and phototropism at night, if there is no external force to shake the trunk, then its phototropism and phototropism is not obvious.

The life span of the adult insect is 45-60 days. This insect has a very unbalanced ratio of males to females at different times. At the beginning of the plumage, males outnumber females by 6~7 times, but at the peak of the plumage, the number of males and females tends to be equal, and at the end of the plumage, it becomes more females than males, and the females outnumber the males by 6~7 times.

After the female and male copulation, the female cicada lays her eggs in the plant branches, causing the branches to die. The eggs hatch in the dead branches and fall into the soil between June and July of the following year, living underground for 3 to 4 years and molting once a year between June and September.

The depth of the wakame in the ground is usually between 2~30 centimeters or deeper. Juvenile wakame are mostly attached to lateral or fibrous roots, while older wakame are mostly attached to thicker roots.

During their underground life, the worms leave a small, rice-sized aeration hole in the ground, in which they live