What are the important characteristics of cicadas? What are the characteristics of cicadas?

The grasshopper is also known as the black old wow wow, which belongs to the family of homoptera cicadas.

The insect is distributed throughout the country and generally occurs at an altitude of no more than 250 meters. It harms fruit trees such as pears, dates, apples, apricots, plums, peaches, cherries, mulberries and grapes, as well as many trees such as willows, acacias, poplars and elms. Its larvae live in the soil, suck the sap of plant roots, weaken the tree, cause the branches to die, and affect 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 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 the soil for several 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.

Cicadas, medium- to large-sized insects of the family Homoptera, about 1,500 species. It is 2 5 cm (in) long, with two pairs of membranous wings, compound eyes prominent, and three single eyes. There are two species in the family of Mantises, commonly known as hairy cicadas, which are found only in southern Australia, including Tasmania.

The male cicada has a tympanic membrane at the base of its abdomen, which makes a loud sound when it vibrates the membrane. Most cicadas make rhythmic ticking or whining sounds, but some species are very vocal. The eggs are often laid in woody tissues, and the nymphs burrow into the ground as soon as they hatch and feed on the sap from the perennial roots.

Generally, it takes several years to mature after 5 molts. Cicadas are not considered pests, but when there are many females, the oviposition can damage the saplings.

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

The three characteristics of the cicada expounded by the French writer Fabre in "Cicada" are:

1. Cicadas can sing.

2. It usually sits side by side with its companions, and there is no need to shout and call.

3. Because there are huge castanets in the body, there is nowhere to place the vital organs, so they have to be pressed into the smallest corner of the body.

Cicada is an essay written by the French writer Iwaspi Fabre, from his work "Insects". The article writes about the characteristics of cicadas from three aspects: shape, Xi annihilation, and sound. The author integrates the colorful life of insects with his own life perception, and looks at insects with human nature, revealing the author's respect and love for life between the lines.

The characteristics of insects and cicadas are:

1. The larvae of cicadas live in the soil, suck the sap of plant roots, weaken the tree, make the branches die, and affect the growth of trees.

2. The larvae of cicadas live in the soil all their lives. When it is about to be feeaten, it is excavated at dusk and at night, climbed to the height of the tree, and then grasps the bark of the tree and molts and feathers.

3. In summer, the tree screams loudly, sucks the sap with a needle mouthpiece, and the larvae inhabit the soil and absorb the sap of the roots, which is harmful to the tree.

4. There are also different species of cicadas, which are similar in shape but different in color. The cicada has three less sensitive eyespots in the middle of its eyes, and there are simply thin tubes on the wings that play a supporting role.

5. The soprano singer in the cicada family is a cicada known as the "double drummer". Its body is flanked by large ring-shaped vocal organs, and the middle part of its body is a disc that can be opened and closed inside and out. The disc opens and closes very quickly, and the shaky cicada cavity chirps from this.