What insects appear when it s raining?

Dragonflies, as well as small insects such as mosquitoes.

The insects that appear after heavy rains are called longhorns. The longhorn beetle is a general term for the multiphagous suborder longhorn beetle, with chewing mouthparts and long antennae, often exceeding the length of the body, with more than 20,000 species worldwide. There are some species that are pests whose larvae live in wood and can cause damage to trees or buildings.

The longhorn beetle is a herbivorous insect, which will harm woody plants, most of the pine, cypress, willow, elm, walnut, citrus, apple, peach and tea, etc., some cotton, wheat, corn, sorghum, sugarcane and hemp, etc., a few wood, buildings, houses and furniture, etc., are the main pests on forestry production, crop cultivation and building wood.

Prevention methods: 1. Implement quarantine: It is strictly forbidden to introduce dangerous longhorn beetles from abroad, outside the province, cities and counties through logs, packaging wood and insect-bearing trees.

2. Insect-resistant tree species: Different garden tree species and varieties have significant differences in resistance to longhorn beetles, and tree species or varieties with light damage should be selected.

3. Strengthen garden management: combined with pruning and pruning, timely pruning and treatment of insect dead branches; Trees with weak growth are susceptible to the damage of longhorn beetle, so forest management should be strengthened to promote the vigorous growth of trees and reduce the damage. Trees that are about to die or have died are cut down in time every year before the adults fly out, and the dead trees in the forest are thoroughly cleaned and treated.

4. Planting bait tree trapping: The adult beetle beetle to eat the bark to supplement nutrition, and has a strong selectivity to the tree species, which can be used to plant a certain number of bait trees to trap the adult beetle, and carry out pesticide or artificial control and adult occurrence monitoring.

It is going to rain, generally it rains more at low pressure, and less rain at high pressure, that is, the clouds with more moisture rise, the temperature decreases, and the gaseous water condenses into liquid water.

In the case of low pressure, the ability of insects to fly decreases, and the relative humidity is high, while insects have internal cavities like humans, and the air pressure of the inner cavity does not change quickly, and the antennae of many insects can feel the relative humidity and the difference in pressure between the inside and outside the body.

1.Insects that eat grass and vegetable leaves usually hide on the back of the leaves to avoid being washed away by the raindrops that are about to rain.

2.And winged insects, butterflies, beetles, butterflies, bees, and generally find a hidden place to hide, such as tree holes, nests, and the eaves of abandoned buildings.

3.Ants and termites will move to higher places, or raise the hole and repair the hole to prevent rain from washing, 4 and burrowing or cockroaches will crawl to dry places, because too humid for insects, will condense water droplets, which is not conducive to activity.

5.Many flies, bed bugs, etc. will choose a place to shelter from the rain, usually after the rain stops, there is a place where the sun shines.

6.Mosquitoes and moths generally do not fly, generally because of low air pressure, or when they encounter the wind, it is difficult to fly.

Swallows fly low, small fish come out of the water, ants move (run high), turtles sweat, dragonflies fly low, butterflies fly under leaves, and so on and so .........forth

Not all insects will have a performance that people can see. Especially in winter, the insects are dormant.

Climb high, or fly low.

Earthworms: Because they use ** to breathe, they live in moist soil.

Snails: live in damp places.

The temperature of cicadas is generally between 25° and 32°, and no matter how high the temperature is, it is not suitable for survival.

The humidity should not be too wet.

The temperature of mosquitoes is between 24° and 25°, and the humidity is high, which belongs to the medium temperature and humidity type.