Why are there no mosquitoes and flies in winter?

In winter, the number of mosquitoes and flies will decrease obviously, but it will not disappear completely. This is mainly because the low temperature environment in winter is not suitable for their survival and reproduction.

First of all, mosquitoes are not extinct in winter, but their numbers are greatly reduced. Because there are many kinds of mosquitoes, some mosquitoes will lay eggs in tree holes for the winter, and some mosquito larvae will hide in the water under the ice for the winter. At the same time, some mosquitoes choose to stay indoors with heating on to avoid the cold. For mosquitoes, as long as the indoor temperature is suitable, they can survive, but the activity will be reduced.

Secondly, the situation of flies is similar to that of mosquitoes. They will produce pupae in autumn, and after dormancy in winter, they will appear as flies in spring. So we seldom see flies in winter, mainly because they have entered the pupa state.

Generally speaking, although there are few mosquitoes and flies in winter, it does not mean that they freeze to death. With the coming of spring, they will start their activities again.