At the end of June, the larvae began to emerge as adults, and the newly emerged cicadas were green, and their 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.

Whenever cicadas are thirsty and hungry, they always insert hard mouthparts into the trunk to suck the juice all day, and suck a lot of nutrients and water into their bodies to prolong their life.

Cicada grows in the soil before it is mature, then slowly digs a hole and climbs up the trunk. If there is mud in the soil-stealing hole, there will be cicadas. Cicada lies on the tree trunk at night to shed its shell, and then it has wings.

Extended data:

From June to July every year, pupae will become adults in just a few days, and then lay eggs. From the beginning of eggs to the process of nymphs living underground, until the last time they shell and become adults, they will make a scene in the trees. This period usually takes one to two years.

Among them, in cicadas, their larvae are also called "nymphs". Their male cicada will make sounds to attract the female cicada to mate with him. It is inserting the oviposition tube at the top of it into the tree to lay eggs, and the larvae will not hatch until the next year.

After living in the soil for several years or even more than ten years, you can break through the ground. In the long life, they have to go through many hulls, and the first time after hulling is when they are adults. Adults will make sounds, and the sounds made by male cicadas are hundreds of times per second.