What are the morphological characteristics of mosquitoes?

Common floaters are actually adult forms of mosquitoes. Its body length varies from species to species, about 5 ~ 15 mm, and its body is thin and long, and its surface is covered with scales. Mosquitoes, like other insects, can be divided into three parts: chest and abdomen. Each of the three chest segments has a pair of feet, the middle chest back has a pair of wings, and the wings on the back chest back degenerate into a pair of balance bars.

Adult mosquitoes have a spherical head, a pair of compound eyes on both sides, a pair of antennae between the eyes, and wheel hairs on the head of the antennae. The ring patterns of female mosquitoes are sparse and short, while those of male mosquitoes are dense and long, which is easy to distinguish. It has a long beak under its head, which is a sucking mouthpiece for mosquitoes to suck blood. Male mosquitoes have degenerated mouthparts and can't suck blood, but can only suck plant juice. It can be seen that the biting mosquito is a female mosquito rather than a male mosquito.

The eggs laid by female mosquitoes are very small, about 1 mm long, and their shapes vary from species to species. They must hatch into larvae in water. The newly laid eggs are grayish white, but soon turn black or brown, often floating on the water or sinking at the bottom of the water. Larvae, commonly known as rags, is long and flat, with clear boundaries between head, chest and abdomen. Every time it molts, it grows up and finally becomes a pupa. Mosquito pupa is a movable pupa, which looks like a comma and is divided into two parts: chest and abdomen. The former is swollen and the latter is long and narrow. The pupal stage is very short, and when the temperature is suitable, it will emerge as an adult mosquito after 1 ~ 2 days.