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Of course, cicadas are oviparous, and some old people think that cicadas are fungus-born just by seeing them emerge from the ground by experience, which is an empirical error.
The larvae of cicadas live in the soil, sucking the sap of plant roots, weakening the tree, causing the branches to die, and affecting the growth of the tree. The larvae of grasshoppers live in the soil all their lives. When it is about to be feathered, it burrows out of the surface at dusk and at night, climbs on a tree, and then grabs the bark of the tree to molt and feather.
At the end of June, the larvae begin to emerge into adults, with a maximum lifespan of about 60 to 70 days. In late July, the female adults begin to lay eggs, and the peak oviposition is in early and mid-August, and the eggs are mostly laid on branches with a thickness of 4 to 5 mm. When the adult female lays eggs, the ovipositor is punctured through the bark and inserted into the branch tissue, creating a claw-like orifice, and then laying eggs in the xylem.
Each spawning hole has 6 8 eggs. There are more than 90 cicada eggs on a branch. In areas where this insect is severe, it is common to see dead branches full of tree trunks by late autumn.
The eggs are laid and hatched in mid-June of the following year. After hatching, the larvae fall from the branches to the ground and burrow into the soil. The larvae live in soil for several years (cicada larvae in the forests of the eastern coast of North America can live underground for up to 17 years) and molt a total of 5 times.
When spring is warm, the larvae move upwards to suck the sap of plant roots, and when autumn turns to winter, they go deep into the soil to avoid the cold. The body of the young larvae is mostly white or yellow, very soft, and the forehead is significantly enlarged. The body of the old larvae is hard, yellowish-brown, the wing buds are very developed, and there is a molting line from the top of the head to the back of the thorax **, which is the dehiscence line when the adult is born.
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Hello, the cicada is a hemiptera, cicada family, is an insect, commonly known as Zhi. The cicada's body can reach centimeters at length, the color of both adults and larvae is brown, its exoskeleton is very hard, it has two pairs of transparent wings of basically the same shape, its head is relatively short, but it is wide, it has two pairs of large eyes, its eyesight is quite good, its leg joints are thick and powerful, and it has spines on it because its front feet are used to dig.
There are about 3,000 species known. The reason why we have the illusion that cicadas have a short life is because of their unique life cycle. Although adult cicadas only live for a few months, the larval stage can survive in the soil for many years, such as the larval stage of a cicada with a 6-year lifespan, which accounts for 5 years of its life.
The larvae of cicadas live in the soil and have a pair of strong digging forefeet. The sap of plant roots is sucked by the piercing and sucking mouthparts to weaken the tree, make the branches die, and affect the growth of the tree.
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Cicadas are a class of organisms of the phylum Arthropods, Insecta, Hemiptera, and Cicadaceae. There are about 3,000 species known.
The life of a cicada goes through three stages: fertilized egg, larvae, and adult. In the summer, fertilized eggs laid in the early years hatch into larvae, which burrow into the soil and feed on the sap of plant rhizomes. When the larvae mature, they crawl to the ground, shed their golden exoskeletons, and emerge into our common winged adults.
The cicada has two pairs of membranous wings, the shape is basically the same, the head is broad and short, with a distinctly prominent frontal-labial base, the vision is quite good, the compound eyes are not large, located on both sides of the head and very separated, and there are 3 single eyes. The antennae are short and whiskered. The mouthparts are slender, and there are esophagus and saliva ducts in the mouthparts, which belong to the stinging and sucking type.
Cicadas mostly live in temperate to tropical regions of the world, and some are distributed in desert areas.
Extended Materials. Types of cicadas:
1. Grass cicada. It is about 20 mm long and green to pale yellowish-brown. The wing veins are green, and the membranous part is transparent. Head yellow-green, single eye red, compound eyes black-brown, antennae yellow-brown.
Prothorax and dorsal yellow, posterior and lateral margins yellowish-green, ** with black longitudinal bands. Midthorax dorsal yellow-green with 2 pairs of wedge-shaped black stripes. The dorsal surface of the abdomen is yellowish-brown, and the base 3 segments are marked with black markings.
The ventral surface of the thorax and the abdominal flap are yellowish-green. The leg segments of the feet are yellowish-brown, the lower tibia are yellowish-green, and the ends of the tarsal joints and claws are dark brown.
Second, the spotted cicada. There is a pair of markings on the inside of the compound eyes on the top of the head. The dorsal plate of the mesothoracic plate has 4 markings. The spots on the tips of the fore and hind wings are grayish-white, with indistinct boundaries, and there are 5 yellowish-brown spots on the basal half. The markings on the forewings are mostly long, and there are no yellow spots on the ventral plate of the abdomen.
3. Thin-winged cicada.
The body color is simple, with two forms: emerald green and orange-brown; The wings are completely transparent, the body color and wing veins are green, and there is phototaxis at night. The adult wings are transparent, the wing veins are green, and the mouthparts are stinging and sucking plant juice. The male has a vocabulator on the abdomen, which uses the contraction of the articulatory tendons to cause the tympanic membrane to vibrate, and the resonance of the speaker produces a chirp to attract the female to copulate.
Fourth, Takasago bear cicada.
body color black; The body of the newly fledged specimen is covered with fine golden hairs; The upper wings are transparent, and the front half of the wings are green. Adults emerge from May to September and live on trees in flatland, low-altitude areas. The chirp was loud.
5. Black-winged cicada.
Adults emerge from April to June and live in low-altitude woods and shrubs. The chirping is very small, and there are dense groups of people in some habitats between the bushes.
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The cicada should not be a three-dimensional animal. Because it's a pest. The first of the three animals is beneficial. Because cicadas are pests, they are not beneficial insects. The other two are economic value and scientific research value.
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Cicadas are insects, not animals.
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Brother, you come out and explain what it means to be an animal.
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For children growing up in rural areas, cicadas are involved in almost every summer of their childhood, and they use cicadas as playthings to play with. Although cicadas are their source of happiness, they also have a short life for cicadas.
Regret it, and they wonder why cicadas are willing to continue to survive when their lifespan is so short.
It is not entirely true that cicadas have a lifespan of only three days, because there are some cicadas in nature that can live for decades, which means that not all cicadas in nature have a lifespan of only a few days. Although cicadas can have a long lifespan, they must still have a short lifespan compared to humans, but although cicadas have a short lifespan, they are maintaining the natural food chain.
played an indispensable role in the balance of the country. <>
In fact, the existence of all living things in nature has a certain significance, and cicadas are no exception, whether they are pests or beneficial insects.
Since nature has given birth to them, it means that their existence has a certain meaning. We all know that cicadas are one of the foods of many birds, once the number of cicadas decreases sharply, the number of birds will also change, which means that if there is a lack of cicadas in nature, then one of the food of birds will be reduced, which will lead to a decrease in the number of birds, and the continuous decrease in the number of birds will also lead to changes in the number of other organisms, and then destroy the balance of the food chain in nature. Therefore, the existence of cicadas is one of the indispensable links that can maintain a stable state of the food chain in nature, and once the cicada disappears in nature, it will lead to an imbalance in the food chain.
The reason why cicadas have a short lifespan is that cicadas spend most of their time in the ground as larvae. It is only during mating season that they burrow into the ground and feather, and then mate to reproduce, and within a few dozen days of their procreation, they will rapidly age and then die.
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The meaning of the existence of cicadas in nature should be the same as the meaning of the existence of all life. They need nutrients from the outside world to grow themselves; Hide from the celestial bodies to keep yourself alive; When they mature, they reproduce their own offspring and strive to maintain the longevity of their species. After being unearthed, the lifespan of cicadas is more than three days, and their average lifespan after excavation is about 15 days, like some cicadas unearthed earlier, the lifespan can be up to 60 days.
However, in comparison, the lifespan of the black grasshopper is longer than that of the cricket and the cricket, and the lifespan of the cricket is longer than that of the cricket.
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The purpose of existence is to make summer more attractive. It also promotes the balance of the ecosystem. It is because the moment they become cicadas, they consume their lives.
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Although the cicada can only live for three days, its larvae can live for 17 years in the soil, and as long as summer comes, it can fly to the surface of the soil and fly to the trees to suck the juice, which is the meaning of its life.
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Zhizhi and cicadas are not the same species, cicadas are several times larger than Zhizhi, and they look almost the same before they shed their shells, and they are different in size. The wings of the cicada are almost transparent after shedding, and they are known to be gray with dark spots. The call is also different, and the cicadas are louder.
But under normal circumstances, people think of it as a living thing.
Their eggs lay on the branches of the tree (the ends are normal), and then they fall into the soil, where they grow for about 4 years before they grow into adults, and at night they emerge from the soil and shed their shells to become flying cicadas.
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Cicadas (scientific name: cicadidae) are hemiptera cicadas found in temperate and tropical regions, inhabiting deserts, grasslands, and forests.
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