What are the characteristics of insects and what are the characteristics of insects?

The characteristic of insects is that the body is divided into three parts: head, thorax and abdomen, one pair of antennae, three pairs of feet, two pairs of wings, and compound eyes. These are the basic characteristics of insects.

Some insects have strange ears, such as crickets' ears, which are tympanic-shaped bumps below the knee of each of their forefeet, which can sense the sounds of other crickets courting; Moths have ears on their abdomen and can feel the sound of bats approaching.

Most insects have a pair of antennae in the middle and upper part of both compound eyes, which are the main sensory organs of the insects, helping them detect obstacles ahead and find food and mates. Some insects also often use their antennae to communicate with their companions.

The mouthparts are the mouths of insects that are responsible for feeding. Because of different foods, different insects also have different types of mouthparts, such as the chewing mouthparts of locusts, the stinging and sucking mouthparts of mosquitoes and cicadas, and the licking and sucking mouthparts of houseflies.

1. The insect body is divided into three parts: head, thorax and abdomen, each part is composed of a number of links, the head is formed by the healing of 6 links, the adult body has no traces of knots, the chest is composed of three segments of the anterior thorax, the middle thorax and the back thorax, and the abdomen is composed of 3 to 12 links, most of which are 10 to 11 segments;

2. Insects have three pairs of segmented feet, which grow on three thoracic segments, and animals with less than three pairs or more than three pairs of legs are not insects, which is the most obvious sign of identifying insects;

3. Most insects have two pairs of wings on their chests, and some species of insects have evolved to have only one pair of wings, such as butterflies, and some species of insect wings have completely degenerated, such as fleas and lice;

4. The insect has a pair of segmented antennae on its head, which have the role of touch and smell, and are used to explore the way, find food, identify the direction and courtship;

5. There is no bone in the insect body, and the adult has a shell on the surface of the body, which is called the exoskeleton.

Insects include butterflies, bees, beetles, caterpillars, moths, flies, mosquitoes, etc., among which butterflies have a wide variety of colors, bright colors, body slippery rent disadvantages or patterns on the wings, bees belong to the class of insects, with queen bees, male peaks, worker bees and other individuals, and beetles are insects with hard shells, such as beetles, beetles, etc.

1. Butterflies

Butterflies are insects, there are many kinds of butterflies, there are more than 14,000 species in the world, and more than 1,200 species in China, the appearance of butterflies is beautiful, the colors of the wings are rich, and the body and wings of some butterflies also have a variety of colored markings.

2. Bees

Bees are insectaceous animals, bees belong to social insects, with queen bees, male peaks, worker bees and other individuals, of which the queen bee is responsible for laying eggs, can produce 800-1300 eggs a day, male peak is responsible for mating with the queen bee, and worker bees need to be responsible for nectar collection, water, pollen and nest door protection.

3. Beetles

Beetle is a general term for Coleopteran insects, which refers to insects with a hard shell on the outside of the body, thick and hard forewings with, and membranous wings after the Shin family, such as beetles, longhorns, weevils, etc., the body size of beetles is different, the smallest is less than 1 cm, and the largest is more than 20 cm.

Insects: locusts, butterflies, bees, grasshoppers, clans, grasshoppers, pupa, silkworms, cicadas, centipedes, bed bugs, moths, caterpillars, mosquitoes, chiro, dragonflies, flies, cockroaches, beetles, flies, crickets, termites, scorpions, spiders, grasshoppers, mealworms, etc. Insects are the most abundant animal group on the planet, accounting for more than 50% of all living species, and their tracks are found in almost every corner of the world.

Insect structure. The body of an insect is divided into three parts: head, thorax, and abdomen. Adults usually have 2 pairs of wings and 6 legs, the wings and feet are located on the thorax, and the body is composed of a series of body segments, which are further assembled into 3 segments.

A pair of antennae are head-born, and the bones are wrapped around the body; The form of life is varied, and it is spread all over the world. It is one of the most diverse arthropods.

Insects play an important role in the biosphere. Insect flowers need the help of insects in order to spread pollen. And honey collected by bees is also one of people's favorite foods. In some parts of Africa, Southeast Asia, and South America, insects themselves are the food of the natives.