Is it cicada or cicada?

1, sound principle

The cicada that can sing is a male cicada. Its vocal organ is at the base of the abdomen, covered with an eardrum like a drum. 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 sing in different tones in turn. The female cicada is a "dumb cicada" because her musical instrument structure is incomplete and she can't make a sound.

2. Distribution range

Distributed in temperate and tropical regions, inhabiting deserts, grasslands and forests. In addition to the species of Lepidoptera, there are periodic cicadas, which appear in midsummer every year. The most famous periodic cicadas are 17-year cicada and 13-year cicada, also called prime cicada. Because the life cycle is a prime number, it will not meet the natural enemies encountered by the previous generation. Periodic cicadas appear at regular intervals in a certain area, and dozens to hundreds of dark brown cicada larvae emerge from the soil together, which is very spectacular. Some species are easy to distinguish in singing, behavior and morphology.

reference data

Baidu Encyclopedia: /item/%E8%9D%89/ 1957? Aladdin & Ampfromid = 2911618&; From the title =%E7%9F%A5%E4%BA%86#4