30 billion cicadas will sweep across the eastern United States. Is this different from our common cicada?

30 billion cicadas will sweep across the northeastern United States. Just seeing this number is shocking. If 30 billion cicadas appear at the same time, I don't know what a spectacular sight it will be. There are 7.5 billion people in the world, and these cicadas in the eastern United States are several times more than the global population. The scientific name of these cicadas is Bloomwood X cicada, which is a kind of creature with local characteristics. Maybe it belongs to the traditional periodic cicada. There are two kinds of periodic cicadas in North America, one is 13 and the other is 17. This time, all the cicadas that have been dormant underground for 17 years have come out at once.

Scientific research shows that the periodicity of periodic cicadas is very punctual. They never leave early and return late for natural or man-made reasons, which is why they are called periodic cicadas. The emergence of periodic cicadas in the United States this year will definitely bring a severe test to the local ecology. Especially for the seedlings of trees. They suck roots and branches, which will affect the growth of trees.

What's the difference between this periodical cicada and our common cicada? Except that the eyes of periodic cicadas are red and reflect light, and the maximum length of periodic cicadas can reach 2.5 cm, there is not much difference from ordinary cicadas in appearance and overall characteristics. The cycle of common cicadas is very short, usually one or three years, with black eyes and brown body.

This periodic cicada in the United States appears once every 17, and every time it appears in billions. Tens of billions of cicadas are different from other creatures. If it is a butterfly, it is at least acceptable in the senses. For the overwhelming flying cicadas, it is not only visually unacceptable, but also extremely harsh. Only those who have experienced it personally know the degree of terror.

Americans experienced such horrors twice in 1987 and 2004. Wherever they are, the bodies of thousands of red-eyed cicadas are disgusting, and their cries day and night are disturbing. Every tree is covered with chirping cicadas. Even if there are natural enemies, it is estimated that they will be killed, and it is difficult to eliminate them in a short time.