What is the definition of insect in moths, locusts, centipedes, spiders, which are insects and which

Insects are usually small to very small segmented animals that belong to one of the members of the arthropods. Insects generally have the following characteristics:

1) The body is clearly divided into three parts: head, chest, and abdomen, and each part is composed of several links. The head is formed by the healing of 6 links, and there are no traces of knots in the adult body. The thorax is composed of three segments: anterior, mid, and posterior thorax.

The abdomen consists of 3 12 segments, most of which are 10 11 segments.

2) Adults have three pairs of segmented feet, each on which they grow on three thoracic segments. (Animals with fewer than three pairs or more than three pairs of legs are not insects, which is the most obvious sign of identifying an insect.) ）

3) Most adults have two pairs of wings on their chests, some species of insects have evolved to have only one pair of wings (e.g., mosquitoes, flies), and some species of insects have completely degenerated wings (e.g., fleas, lice).

4) Insects have a pair of segmented antennae on their heads, which have the sense of touch and smell, and are used for pathfinding, feeding, direction identification, and courtship.

5) Insects do not have bones in their bodies, and adults have a shell on their body surface, called "exoskeletons".

Moths, locusts are insects.

Spiders belong to the arachnids of the phylum Arthropods, and centipedes belong to the myriapoda of the phylum Arthropods.

An insect is an insect that has six legs or six or more.

Spiders and centipedes are not insects.

Spiders belong to the class Arachnid, which is the most abundant predatory natural enemy in terrestrial ecosystems, and its role in maintaining the stability of agricultural and forestry ecosystems cannot be ignored. The body is 1 90 mm long, and the body is divided into two parts: cephalothorax (anterior) and abdominal (posterior), and the cephalothorax is covered with dorsal armor and chest plate.

Centipedes belong to the class Lamipoda, centipedes are terrestrial arthropods, the body is composed of many body segments, each segment has long legs, so it is a multi-legged creature. Centipede, also known as Tianlong, centipede, less-spiny centipede, Wu Gong, maggot, etc., is a venomous, predatory terrestrial arthropod.

The body of an insect 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 in the thorax, and the body is composed of a series of body segments, which are further assembled into 3 segments (head, thorax and abdomen). 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 are constructed differently from vertebrates in that their bodies are not supported by an endoskeleton and are covered with a shell made of chitin. This shell is divided into sections to facilitate movement, like a knight's armor.

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.

But insects can also pose a threat to humans, such as locusts and termites. And some insects, such as mosquitoes, are also transmitters of diseases. Some insects are capable of harming humans through venom or bites. For example, wasps inject venom into intruders with their stings.

No, the biggest feature of insects is that they have three pairs of legs and two pairs of wings, spiders belong to a separate arachnid, and centipedes belong to myriapoda. Both of them are arthropods.

It doesn't belong. Insects are divided into three parts: head, thorax, and abdomen, with only three pairs of legs.

They all belong to the phylum Arthropods.

Spiders belong to the class Arachniformes.

Centipedes belong to the class Myriapoda.

Insects belong to six general groups.

No, because insects only have six legs.

Spiders and centipedes are not insects, although they both have the word "worm" on the edge. The basic characteristics of insects are that adults generally have 2 pairs of wings and 3 pairs of legs, while spiders and centipedes have 4 or more pairs of legs and do not have wings. In the taxonomic order of biology, spiders belong to the class Arachnids and centipedes belong to the class Labiopoda, both of which belong to the phylum Arthropod like the class Insecta, so spiders and centipedes are close relatives of insects, although they are not insects.

Insects, which are invertebrates in the animal kingdom, are the most numerous animal groups on the planet, and their tracks can be found in almost every corner of the world. Currently, there are about 1 million species of insects known to humans, but many species are still to be discovered. There are many kinds of insects with different morphologies, and in terms of scientific classification, insects are included in the phylum Arthropods, and they have common characteristics of arthropods.

Insecta is not only the largest class in the phylum Arthropods, but also the largest in the animal kingdom. Not only are there many species of insects, but the number of individuals of the same species is also staggering.

Amputees with 2 pairs of wings, 3 pairs of legs, and a pair of antennae.

The body of locusts, crickets, bees, and mosquitoes can be divided into three parts: head, chest, and abdomen, two pairs of wings, three pairs of legs, and exoskeletons outside the body are insects, while spiders have 4 pairs of legs, centipedes have many pairs of legs, and they have no wings, so they are not insects, but they all belong to arthropods

So the answer is:

There are some insects that have been given special names because of their natural appearance, lifestyle, or other characteristics. For example:

1.Bees: Bees are well-known working insects and are known as "worker bees" for their professionalism and ability to collect pollen.

2.Butterflies: Butterflies are beautiful and fascinating insects that get their name from the special contours and colors of their wings. Bees are generally referred to as "moths".

3.Ants: Ants, with their abilities, have a special place in human society. They are social insects, and they are called "Ann Ants" by Ambush.

4.Praying Mantis: The praying mantis is a well-known predatory insect, known for its form, fancy, and speed. They are known as "fairy mantises".

5.Centipede: The centipede is long and flattened and is known as the "centipede".

6.Dragonfly: Dragonfly can complete complex flight actions such as ascent, level flight, high-speed flight, and descent in the air. Due to the very high vibration frequency of their wings, they are called "flying tiger dragonflies".

These unique names allow us to get closer and better about these insects, while also making them more interesting and compelling.