2, cicada, commonly known as cicada. Living in temperate to tropical regions of the world. Some species distributed in desert areas, when their body temperature is overheated, will discharge excess water from the backboard, thus achieving the effect of cooling and dissipating heat.
3. The male cicada has a sound generator in the abdomen, which can constantly make sharp sounds. The female cicada does not make a sound, but there is a sounder in her abdomen.