[katieHaylor (OP)]

Amir asks:

Where are flies or mosquitoes in autumn and winter?
We don't see them during these seasons, they show up in spring and summer.

Can you help?

[miniguy]

I assume they die off but leave their eggs/larvae behind in the soil and water which will hatch in the spring.

[Janus]

Life span of a typical flay ~1 month. Life span of a female mosquito ( under optimum conditions) ~ 2 months. ( the males only live 10 days)  So as, miniguy said, they lay their eggs, die off, and in spring, the next generation arises.

[Paul.D]

The lifespan of a male mosquito is up to 10 days, and then it dies after mating. The males never make it past the fall. The female mosquitoes spend the colder months inactive in protected places, such as hollow logs or animal burrows. It is fair to say the mosquito enters a period of dormancy, similar to a bear or squirrel hibernating for the winter. She can hibernate for up to six months.

Certain mosquitoes can survive the winter in the larval and pupal stage. All mosquito larvae and pupae require water, even in winter. As the water temperature drops, the mosquito larvae enter a state of diapause, suspending further development and slowing metabolism. Development resumes when the water warms again.

[Bored chemist]

"Where do flies and mosquitoes go in winter?"
Not far enough!

[rami999]

they die
and then the next generation bite you haha