What is the growth process of cicadas?

Cicadas generally start from the silkworm pupae, in June-July, the pupae become adults, and begin to lay eggs within a few days, from eggs to larvae, cicadas live underground, when a black crack appears on the back of the cicada pupa, the process of molting begins, and the cicada has to go through many times of shedding before it can become an adult.

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.

The small larva hatches from the eggs, stays on the branches, the autumn wind blows it to the ground, as soon as it reaches the ground, it immediately looks for soft soil and drills down, drills to the roots, sucks the sap of the roots to live, at least two or three years, more than ten years, from the larvae to the adults through five molts, four of which are underground, and the last time, is to drill out of the soil and climb to the tree to shed the dry light yellow shell (this is the cicada shell) before becoming an adult. It can be seen that cicadas are insects that cannot be seen, and although they have a long lifespan, they rarely live in the sun, and spend almost their entire lives in the dark, which is a pity. The cicada has two pairs of membranous wings with hard veins, and when the cicada rests, the wings are <>

Always covered on the back. Cicadas rarely fly freely, only when they are feeding or harassed do they fly from tree to tree. Interestingly, the cicada can suck juice through a straw and sing with a musical instrument at the same time, eating and singing do not interfere with each other, and the chirping of the cicada predicts the weather, and if the cicada sings loudly at the top of the tree early in the morning, it tells people that "it's hot today".

Cicadas are widely distributed, distributed in the north and south of China, mainly inhabit broad-leaved trees, the life cycle is 3 5 years, the adult life span is 2 3 months, the oviposition period is in the month of each year, the overwintering eggs hatch in May and June of the following year, and the egg period is nearly 300 days. <

The activity of the overwintering nymphs was affected by ground temperature and the sap of the host plant, and when the temperature was higher than 10 15, the sap of the tree began to flow rapidly, and the overwintering nymphs began to sting, suck and feed. Nymphs (cicada ants) hatched from overwintering eggs, burrow into the soil and suck the sap at the roots of the host plant. As the age increases, they create earthen chambers of different sizes and shapes to live in.

Part of the wall of the earthen chamber is attached to the roots of the plant so that it can be fed. When the temperature drops in autumn, they burrow into deep soil for wintering, and then migrate upward to the roots of trees after the spring is warm.

<> the largest number of nymphs in the soil is in May, when the overwintering eggs hatch into the soil in large numbers, and the last instar nymphs are about to emerge and molt into adults. After completing the whole life process of the nymphs in the soil, the mature nymphs emerge from the soil in May and August, and crawl to the branches of shrubs, weeds, stems, etc., and fix themselves on the bark branches and leaves with their claws and the thorns of their forefeet, molting and feathering into adults.

Adults are at their peak in June and late in October. About 20 days after the adult emerges, the tail lays eggs, the adult oviposition period is the peak period of adult oviposition in July and August, the end of oviposition is in October, and the final period of adult eggs is November. Adults mostly emerge at 20:22:00 at night and 4:6 at 6:00 in the morning, and the ratio of females to males is basically 1:

1 ratio.

It takes two to three years for cicadas to grow.

The cicada's pupae spend the first two or three years of its life underground, perhaps longer. During this time, it sucks the liquid from the tree's roots. Then one day he broke through the ground and found a tree to climb up with his survival instinct.

After several years of slow growth, the cicada pupa crawls out of the ground as a reservoir of energy. It uses the front paws of ** to dig holes, and Zheng Yumin can also use it to climb.

Different species of cicadas have different life cycles, most of the life cycles of French cicadas are 4 years, while North America has cicadas with a lifespan of up to 17 years, and most of the Chinese cicadas have a lifespan of 3 to 7 years, nearly half of which are 5 years, and a few can spend 8 to 9 years.

Once the mating is complete, the male dies, and when the female lays her eggs in the soil, she dies because it has completed its excavation task. But it seems to people that it only lives for about a week on the ground.

The growth process of cicadas:

In June and July of each year, they will turn from pupae to adults and then lay eggs in just a few days, starting from the eggs, through the process of the nymphs living in the ground, until the last time they shed their shells and become adults, and they are loud in the trees, usually one to two years.

Among the cicadas, their larvae are also called "nymphs", their male cicadas will make sounds to attract female cicadas to mate with them, and they use their sharp oviposition tubes to lay eggs close to the tree, and the larvae will not hatch until the next year, and then live in the soil for a few years or even more than ten years before breaking through the soil.

In a long life, they have to go through many shellings, and the next shelling is also when it becomes an adult, and when it becomes an adult, it will make a sound, and the sound made by the male cicada is at a high frequency of hundreds of times per second, constantly moving the two tympanic membranes located in the abdomen, to make a sharp and loud sound. This sound helps the female cicada determine the appropriate position of the male cicada for mating.