After knowing that after laying eggs, it will take several years for the eggs to become known again

It is known that eggs are laid on branches 4-5 mm thick.

It is known that the eggs are laid in late July, and the peak of spawning is in early and mid-August, and in summer, they call loudly in the trees, and they use needles to prick the mouthparts to absorb the sap of the trees, and the larvae inhabit the soil and absorb the sap of the roots, which is harmful to the trees.

It is known to be distributed in temperate and tropical regions.

Inhabits deserts, grasslands, and forests. Except every year in the middle of summer.

In addition to the species of the genus "Moth Cicada", there are also periodic cicadas. The most well-known periodic cicadas are the seventeen-year cicada and the thirteen-year cicada, also known as prime numbers.

Cicadas, because their life cycle is a prime number, will not encounter the natural predators encountered in the previous generation.

The growth cycle is divided into the following stages:

1.Cicada eggs: cicadas will change from pupae to adults in June and July every year, and then lay eggs in just a few days, eggs in late May to early June of the second year for the peak period of incubation, late June hatching activities are over, mostly hatched in the afternoon during the day, accounting for about 80%, less hatching at night, about 20%, the egg period is close to 300 days.

2.Larvae: The larvae of the cicada live in the soil, have a pair of strong digging forefeet, suck the juice at the roots of the host plant, are less active, usually stay in the soil for several years or even more than ten years, after the temperature drops in the autumn, they burrow into the deep soil layer for winter, and then migrate upward to the root of the tree after the spring is warm, and the number of nymphs in the soil is the largest in May of the year.

3.Pupa: The mature larvae of cicadas emerge from the soil from late May to mid-to-late August, molt and emerge into adults.

4.Adults: mid-June to mid-July is the peak period of adult appearance, early October is the end stage, the adult emerges about 20 days after the tail lays eggs, the late June begins to lay eggs, the end of June to late August is the peak period of adult oviposition, the end of September to early October is the end of oviposition, and the final period is early November.

In summary, the growth cycle of Zhizhi includes four stages: cicada egg, larva, pupae and adult, each stage has its specific morphology and habits.

The growth cycle is 3 years, the first year has the size of a soybean grain milky white, the belly is larger, the second year is the size of two peanuts, the color becomes yellow-brown, the third year is unearthed.

Generally three to seventeen years. Seventeen years cicadas are in the ground for seventeen years before they emerge as adults on the ground! It usually takes three years to know it at the earliest.

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.

It should be placed in the house after the winter planting, the room temperature is not lower than 10 degrees in winter, so that the survival rate is high, the ditch is dug 20cm deep, pay attention to the planting density is not too large, insert a branch with eggs at intervals of 20-30cm, lightly cover the soil, not too dense. Laughing.

Incubation method: In a plastic box with a length of 70 cm, a width of 40 cm and a height of 20 cm, spread 5 10 cm thick fine dry sand at the bottom, place the egg branches vertically or horizontally on it in bundles, and spray mist water often with a small sprayer to maintain the high humidity of the air around the egg branches, so that the excess water droplets are adsorbed in the fine sand at the bottom. Control the temperature of the incubation room at 28 34.

In the middle, the hatching of eggs should be continuously checked, and when nymph activity is found, the branches can be placed in the breeding site together with fine sand.

Wild golden cicadas have an incubation time of one to two years, which can be completed in 35 days in the incubation room. In the wild, due to environmental adverse factors such as wind, snow, rain and frost, as well as the presence of natural enemies such as ants and parasitic wasps, the hatching survival rate of cicada eggs has been less than 3. Artificial incubation also protects the cicadas, and the hatching survival rate of cicada eggs is greatly improved.