After the heavy rain in summer, there are few mosquitoes indoors at night. Why?

Mosquitoes like wet environment because they are all outdoors.

The weather is sultry, and there are many mosquitoes before it rains, which is related to the living habits of mosquitoes. Insects such as mosquitoes have chemotaxis, that is, they have a certain tendency and avoidance reaction to some chemicals with special smells. In addition, mosquitoes also like to move in dark and humid places. With the tentacles of eyes and head and three pairs of sensitive sensors on feet, it can receive warm and humid smells, exhaled carbon dioxide, evaporated sweat and other secretions as "smell language". Before the hot weather or rain, the humidity in the air is high and the light is weak, so the substances secreted by human skin can not be quickly volatilized due to the hot weather. These conditions have a trapping effect on mosquitoes and can be smelled in the wind. So before the rain, when the weather is sultry, people feel that there are a lot of mosquitoes.

Mosquitoes generally appear in April every year and reach the peak in the middle and late August. When the climate gets cold in autumn and the temperature drops below 10 degrees Celsius, mosquitoes will stop breeding and go into hibernation until they wake up the next spring. The most suitable temperature for mosquitoes is about 30 degrees Celsius. They can't stand the mosquito's living and breeding environment, so they must have water, so there are groundwater, shallow pits, sewage, gullies, water in containers, water in flowerpots, water in sewers and ditches ... There are water storage places such as bottles, patios, awnings, sewers and floor drains at home, which may make mosquitoes breeding places.