Where do the flies go in winter?

In summer, the weather is warm and there is plenty of food. Flies can live for 7 ~ 2 1 day. But in winter, the weather is cold and there is no food, so a large number of flies are frozen to death.

In winter, a small number of flies become pupae, larvae and adults.

Fly habit

In biology, flies are typical "completely abnormal insects". Its life goes through four stages: egg, larva (maggot), pupa and adult, and the morphology of each stage is completely different.

Egg white, banana-shaped or oval, about 1 mm long. There are two ridges on the back of the eggshell, and the membrane between the ridges is the thinnest, from which the larvae emerge when hatching. The development time of egg stage is 8 ~ 24 hours, which is related to environmental temperature and humidity. Eggs do not develop below 65438 03℃ and die below 8℃ or above 42℃. In the following range, the incubation time of eggs is shortened with the increase of temperature: 20 hours at 22℃. At 25℃, it takes 16 ~ 18 hours. At 28℃, it takes 14 hours. At 35℃, it only takes 8 ~ 10 hour. The humidity of growth substrate also affects the hatching rate of eggs: when the relative humidity is 75% ~ 80%, the hatching rate is the highest. When it is lower than 65% or higher than 85%, the hatching rate is obviously reduced.