Characteristics of 7th grade cicadas, what are the characteristics of cicadas?

The cicada has two pairs of membranous wings, essentially the same shape, with a broad, short head with a distinctly prominent frontal-labial base; Visual acuity is quite good, the compound eyes are not large, located on both sides of the head and widely separated, and there are 3 monoculars. 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.

The chest includes the anterior, mid and posterior chests, with the anterior and mid chests being longer. Whenever the cicada is thirsty and hungry, it inserts its hard mouthparts into the trunk to suck the sap.

, appearance characteristics. The cicada has a pair of large compound eyes, located on either side of the head, with three punctate monoculars in the middleIts antennae are short and stiff, like bristles...

At the same time, the cicada has two pairs of membranous wings, which are essentially the same shape, with a broad, short head with a distinctly prominent frontallip baseMoreover, the body length of the adult worm is mostly between 2-5 cm

Cicadas are insects, and their habits and characteristics are as follows:

1.Life cycle of cicadas: The life cycle of cicadas is divided into three stages: naruqing eggs, nymphs and adults. The nymphs of cicadas live underground for many years before breaking through the soil in the summer months and becoming adults. Adult worms usually live from a few weeks to several months.

2.Feeding habits: The cicada is a plant-eating insect that feeds mainly on the sap of trees. During the summer months, cicadas look for sapy-rich leaves on the tree, pricking the leaves with needle-like mouthparts to suck up the sap.

3.Habitat: The cicada's nylum worm usually lives underground, while the adult worm lives in trees. Cicadas prefer oak and silver to roost on tree trunks, branches, and leaves, and are also active in grass and bushes.

4.Reproduction: Cicadas reproduce through their eggs. Cicadas will lay their eggs on branches, and the eggs will hatch into nymphs on the branches.

5.Tweeting: The cicada is a songworm that grows during the summer months. The cicada's chirping is made through the vocal organs of the abdomen, and the sound is high-pitched and loud and can travel far away.

6.Adaptability: Cicadas are highly adaptable and can survive in different environments. They can survive in extreme environments such as drought, cold, and high temperatures, and they can find sap on different plants.

In conclusion, cicadas are highly adaptable insects, and their life cycle, feeding habits, habitat, reproduction, chirping, and adaptability make them play an important role in nature.

The cicada has a hollow mouth like a needle, which can pierce into the tree and suck the sap, and is a large plant-sucking insect. The cicada makes a courtship sound before mating, and the eggs lay in the woody tissues, and the nymphs burrow into the ground as soon as they hatch, where they inhabit the soil and feed on the sap from the roots of perennials. The young pure focian of the cicada lives in the soil and has 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 branch crack cover tip die, and affect the growth of the tree. Usually stay in the soil for a few years or even more than ten years, such as 3 years, 5 years, and 17 years, these numbers have one thing in common, they are all prime numbers. This is because there are very few factors in prime numbers, and when they are out of the dirt, they can prevent them from drilling out with other cicadas and competing for territory and food.

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.

1. 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 momentum, make the branches die, and affect the growth of the tree. They usually stay in the soil for a few years or even more than ten years.

2. When the cicada wants to feather, it burrows out of the surface at dusk and at night, climbs to the tree, and then grabs the bark and molts and feathers. When a black crack appears on the back of the cicada chrysalis, the molting process begins, the head comes out first, then the green body and wrinkled wings are exposed, and it stays for a moment to harden the wings and darken the color, and then it begins to take off.

3. The cicada calls loudly on the tree in summer, and sucks the sap with a needle pricking mouthpart, and the larvae inhabit the soil and absorb the sap of the roots, which is harmful to the tree.