It seems that the hotter the weather, the louder the cicada calls. Why?

The humming cicada is a male cicada, and its vocal organ is located at the base of the abdomen, like a drum, which is covered with an eardrum. The eardrum vibrates and makes a sound. Because the vocal cord muscles can expand and contract about 65,438+0,000 times per second, and the gap between the cover plate and the eardrum can play a role of * * *, its singing is particularly loud. And you can take turns singing in different tones. The female cicada is a "dumb cicada" because her musical instrument structure is incomplete and she can't make a sound.

Attachment: cicada's interests

Since ancient times, people have been most interested in the singing of cicadas. It is praised by poets and poets, and expresses noble feelings with the sound of chanting cicadas. What's more, some people keep cicadas in small and exquisite cages and put them in their rooms to listen to their voices to win people's hearts. Indeed, from the spring when flowers are in full bloom to the autumn when green leaves are withered, cicadas have been tirelessly singing a brisk cicada song for people without any Chinese and western musical instruments, adding a deep affection to nature. No wonder people call them "insect musicians" and "singers of nature".

People are intoxicated by the cicada's song, but forget its nature. Do you know that whenever cicadas fall on the branches and sing loudly, they pierce the bark with slender mouthparts and suck the sap of trees, all kinds of thirsty ants, flies, beetles and so on. Will hear the sound to suck the sap, and cicadas will fly to another tree, open another "spring eye" to continue to provide them with drinks, so that if a book can see that cicadas are big pests of trees.

The humming cicada is a male cicada, and its vocal organ is located at the base of the abdomen, like a drum, which is covered with an eardrum. The eardrum vibrates and makes a sound. Because the vocal cord muscles can expand and contract about 65,438+0,000 times per second, and the gap between the cover plate and the eardrum can play a role of * * *, its singing is particularly loud. And you can take turns singing in different tones. The female cicada is a "dumb cicada" because her musical instrument structure is incomplete and she can't make a sound.

The male cicada keeps singing every day to lure the female cicada to mate. To the female cicada, the male cicada sounds like a wonderful music. After mating and fertilization, the female cicada pricks a row of small holes in the branches with a sword-shaped ovipositor and lays her eggs in the small holes. A few weeks later, both male and female cicadas died.

The larvae hatch from the eggs and stay on the branches. Autumn wind blows them to the ground. As soon as they reach the ground, they immediately find soft soil to drill down to the edge of the roots and suck the sap of the roots for a living. At least two or three years, more than ten years, from larva to adult, you have to shed your skin five times, four of which are underground, and the last time you climb out of the soil and climb into a tree to shed the dry yellowish shell (this is the shell of cicada). It can be seen that cicada is an insect that can't see the light. Although they live for a long time, they rarely live in the sun and spend almost all their lives in the dark underground. I'm sorry.

Cicada has two pairs of membranous wings with very hard veins. When cicadas rest, their wings always cover their backs. Cicada rarely flies freely, and only flies from tree to tree when it is foraging or disturbed. Interestingly, cicadas can suck juice through straws and sing with musical instruments at the same time. Eating and singing do not interfere with each other. The chirping of cicadas can predict the weather. If the cicada chirps loudly in the treetops early, it will tell people that it is very hot today.