Why do cicadas croaking in trees? Why do cicadas call?

Cicadas call in trees because they usually reproduce in trees. Male cicadas emit their characteristic chirps to attract female cicadas to mate. In addition, the sound of cicadas can also help them attract food**, such as tree sap and nectar.

The chirping of cicadas is produced by the rapid vibration of their wings. When cicadas are in a tree, their wings vibrate rapidly, resulting in a loud chirp. This sound can be transmitted through the air, making it audible to the surrounding cicadas and other animals.

Therefore, the main reason cicadas call in trees is to reproduce and find food.

On a hot summer day, you'll hear the sound of "know what you know" in the lush foliage, which is the sound of cicadas.

The cicada is one of the families of the suborder Hemiptera Cervicular Beak of the insect class, commonly known as known or borrowed. Survive by eating the sap of plants.

The cicada is 2 5 cm long, with two pairs of membranous wings, basically the same shape, with prominent compound eyes, three single eyes, and well-developed digging feet. The larvae live in the soil, and the last instar larvae are mostly brown and similar to the adults.

Cicadas use stinging mouthparts to suck the sap of plant roots, weaken the tree, make the treetops die, affect the growth of trees, usually stay in the soil for several years or even more than ten years, such as three years, five years, and 17 years, these numbers have one thing in common, they are all prime numbers.

At the end of June, the larvae begin to emerge into adults, the newly emerged cicadas are green, and the longest lifespan is about 60-70 days, in late July, the female adults begin to lay eggs, and in early and mid-August, the eggs are mostly laid on the treetops with a thickness of 4-5 mm.

In general, cicadas can be divided into two main categories, one is the male cicada, which chirps; the other type is the female cicada, which cannot chirp; The male cicada's articulator is at the base of the abdomen, like a layer of tympanic membrane.

The drum is vibrated and the sound is sounded by vibration, and because the sound muscle expands and contracts about 10,000 times per second, the gap between the cover plate and the eardrum is empty, which can play a resonant role, so its sound is particularly loud.

There are more than 2,000 species of cicadas, including fried cicadas and autumn cicadas.

Cockroaches and so on. The cicada body is rich in nutrients, with a dry protein content of more than 70%, a fat of about 7%, vitamins and various beneficial trace elements.

It is about higher than the general meat food, and can be called the "protein king" in today's food.

Since the cicada has a very short lifespan, only about two months, it and its cicada molt.

It can be used as medicine to treat diseases and save people. Adults live in the summer and chirp "Zhizhi" from the trees, so sometimes they are sympathetic to the ancients. Luo Bing Wang.

In "In Prison Chanting Cicada and Preface.

The poem that sings to it in the middle of it: the cicadas of the Western Continent sing, and the southern crown of the guest thinks deeply ......

Before it rains, when the air pressure drops, the air is humid and muggy, and the cicada's wings are wet, it instinctively flutters its wings, which is the cicada's song.

Cicadas live in temperate to tropical regions of the world (about 2,000 species of cicadas have been recorded). Some species found in the desert area of Shajin will expel excess water from the tergum when the body temperature is too hot, which will cool and dissipate heat.

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.

Different types, different calls.

1.Translation:

The cicadas drank the clear dew with their heads down and cries from the tall plane trees.

It is located in a high place, and the sound can naturally travel far away, not with the help of the autumn wind.

2."Cicada" is a five-character ancient poem written by the Tang Dynasty poet Yu Shinan, which is a poem with the meaning of things. Original:

Drink the dew, and the sound of dredging is out.

Raising his voice from afar, not by the autumn wind.

3.Notes:

淌 (ruí): The ancient official hat is knotted and drooping, and the head of the cicada has tentacles that stretch out, and the shape is like a drooping crown tassel. It also refers to the thin beak on the chin of the cicada, which resembles a hat band.

Dew: Pure dew. Drinking dew: The ancients believed that cicadas were noble in nature and drank dew when they dwelled high, but they actually sucked the sap of plants.

Stream: Emitted. Flowing sound: refers to the cicada singing endlessly, and the sound travels far away.

Tung tree: Tall sycamore.

Contiguous: refers to perching on a high place, pun intended.

藉 (jiè): to rely on, to rely on.

The implication is that the gentleman should be as high and distant as the cicada, and do not have to rely on or be subject to other things. It expresses the poet's enthusiastic praise and high self-confidence for people's inner character, and shows a graceful and unhurried demeanor.