There are small things in the room like dragonflies and ladybugs that can fly

According to the description, there are small insects in the room like dragonflies and ladybugs that can fly, probably for the following reasons:

1.May be thrips, smaller, 1-2mm long, yellow-brown or dark brown. They fly quickly, are adept at avoiding light, and tend to be active at night or on cloudy days.

2.It may be a fruit fly with a small size, 2-4 mm long, and a red or yellowish brown body. They love to breed on rotting fruits or plants and will also look for food in their rooms.

3.It may be a small silverfish, small in size, 3-5 mm long, with a reddish-brown or black body. They will eat away in wood or bark and will also look for food in their rooms.

These insects are not directly harmful to humans, but they may cause some inconveniences, such as biting on clothing or food. If you don't want them to breed in the room, you can do the following:

1.Keep the room clean, clean up the garbage in time, avoid rotting fruits, plants, etc. leaving food residues, and reduce the breeding grounds of insects.

2.Close windows and doors to prevent insects from flying indoors.

3.The use of insecticides or insect repellents, sprayed on the corners of the room, walls, windows, etc., can effectively repel or kill insects.

4.If there are a large number of insects, you can contact a professional insecticide company for comprehensive insecticide treatment.

From your **, this insect is called tobacco beetle. Tobacco beetle is a moth, and it is not harmful to people. Tobacco beetles are ovate, about 3 mm long, reddish-yellow to reddish-brown.

The firstborn is below the anterior thorax and cannot be seen on the back. The dorsal plate of the prothorax is highly convex and rounded. Compound eyes are large and black.

antennae 11-segmented, serrate. The notches on the elytra are not conspicuous and are not arranged in longitudinal rows.

Tobacco beetle is a worldwide storage pest with a complex diet.

There are no signs that dragonflies will appear in large numbers during the breeding and foraging season, and they will fly everywhere. Flying into the house was just an accident. Or maybe it's just to escape the bad weather conditions.

Nature has evolved so that the vast majority of insects have their own waterproofing measures on their wings, and these waterproofing measures are highly reliable and practical. Insects must have the ability to maintain their ability to fly in climates with all kinds of humidity in order to be able to survive in the harsh natural environment.

survived.

Extension: Air humidity before rain.

It is very large, and the humid water vapor will wet the wings of the insects, causing the insects to become heavier, and at the same time, the weather is very stuffy, and the higher the air is, the thinner it is, the more difficult it is to breathe, so the insects have to fly low in order to survive. Dragonflies are also an insect that can reach rainy days.

Its wings will also get wet, so it should fly low.

Another reason is that dragonflies feed on most insects, and when it rains, insects fly low, so dragonflies also fly low, because in this way they can hunt for more food, in other words, dragonflies fly low to find food. There are also small birds that feed on flying insects, such as swallows, which are just as good as dragonflies.

It's not that insects can't fly high in humid air, but to prevent rain and hail.

And thunder and lightning hurt themselves, instinctively lowering the flight altitude before the rain.

Insects that do not fly when they encounter humid air, even if they have appeared in history, have long been eliminated by nature.

It should be that caenagrion belongs to the class of insects, dragonflies, and bundle wings, collectively referred to as 蟌 (cōng). It is small in size and has wings bundled above its back when resting. A flying insect with an elongated and weak body, resembling a small dragonfly, but not a dragonfly.

There are more than 650 species of this relatively primitive insect in China, accounting for about 10% of the total number of dragonfly insects in the world.

Adults called damselfly often move near waters, so they can be seen flying in mountains, streams and even lakeside ponds. Adult damselflies look very delicate and weak, but they are carnivorous, and they mostly hunt less active insects such as aphids.

The larvae of damselfly live in water and feed on small animals in the water. The most obvious feature of the bean maid larvae is the trap made of the lower lip, which resembles a mask, but also like a beggar along the street, so it is often jokingly called the water beggar in the countrysideIn fact, it is quite similar to the larvae of dragonflies in appearance, and the main differences are:

The juvenile body of the dragonfly is stout, and the tail gills at the end of the abdomen do not have tail gills but breathe with rectal gills; The juvenile of the damselfly has a slender body and three tail gills at the end of the abdomen. Unlike dragonfly larvae, damselfly juveniles have three tail gills on their abdomen, while dragonflies do not.