Please tell me the characteristics of insects. Name some insects you know.

(1) The body is obviously divided into three parts: head, chest and abdomen, and each part is composed of several links. The head is composed of six links, and there are no traces of joints in adulthood. The chest consists of three parts: the front chest, the middle chest and the back chest. The abdomen consists of 3 ~ 12 links, most of which are 10 ~ 65438+.

(2) Adults have three pairs of segmented feet, which grow on three thoracic segments. Animals with less than three pairs of feet or more than three pairs of feet are not insects, which is the most obvious sign to identify insects. )

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

(4) Insects have a pair of segmented antennae on their heads, which have the functions of touch and smell, and are used for finding the way, finding food, identifying the direction and courtship.

(5) There is no skeleton in the insect body, but there is a shell on the surface of the adult insect body, which is called exoskeleton.

Insects include scarabs, longicorn beetles, shovel-shaped scarabs, nanji, ladybugs, etc.

Hope to adopt. Thank you.