How long can dragonflies live?

Dragonflies are the general name of dragonflies and dragonflies. They are incomplete metamorphosis insects. There are more than 5000 species in the world and more than 300 species are distributed in China. Among them, there are many common dragonflies, such as Biwei fly, yellow mole and long-leaf mole. Let's take a look at how long dragonflies can live.

How long can dragonflies live?

The larvae of dragonflies take at least a year to stay in the water, and the whole larval stage varies according to different species and seasons, ranging from one month to three or four years, and those who take longer have to endure seven or eight years before they can emerge as adults. The life span of adults of dragonflies is only 1/10 of that of larvae, and they can only live for about one to eight months. Nevertheless, dragonflies have a long life among insects.

Where did the dragonfly go in winter?

Dragonflies have basically completed their entire life cycle before winter, but their eggs are placed in plants, in dead wood or even in dry soil, or dropped on the surface of the water, depending on the species. The eggs of most species of dragonflies in temperate regions do not hatch after birth and may take several months to hatch. This period of non-hatching is called "diapause". The purpose is to allow dragonflies to spend the cold winter in egg form.

Is dragonfly a beneficial insect or a pest?

The dragonfly is an incomplete metamorphosis insect. The juvenile "Shuizhi" lives in the water, breathes through the rectal trachea Gill and preys with a very developed face cover. It usually takes more than 11 times to molt, and it takes 2 or more years to climb out of the water along the aquatic plant, and then molt and feather into an adult. Young worms can prey on wigglers or other small animals in the water, and sometimes the same kind also eat each other. Both adults and larvae are carnivorous and eat more pests. Adults can not only prey on mosquitoes and flies, but also prey on butterflies, moths, bees and other pests.