Silkworm is a LEPIDOPTERA insect, and its life can be divided into four stages: egg, larva, pupa and adult.
Silkworms just hatched from eggs are black and hairy, like ants, called ant silkworms. Ants and silkworms eat mulberry leaves and grow up slowly. After a while, it fell asleep. After a day or two, it shed a layer of skin and began to eat mulberry leaves, and its body continued to grow. Repeat this four times to reach maturity. It takes about a month from the first sleep to the fourth sleep. After eating a catty of mulberry leaves, my body grew forty times and my weight increased by about nine thousand times.
Extended data:
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Introduction:
Refers to silkworms raised in spring. The feeding period is often influenced by many factors, such as ground temperature, climate, farmland operation and so on, especially the germination of mulberry trees. Ants are usually collected in early May, and in warm places, it is in late April. The cocoon shape of spring silkworm is larger, the cocoon silk is thicker and the silk quality is generally better. This is also the raw material of silk, one of China's specialties.
Because there are more mulberry trees and the climate is warm, sericulture is the main economic subject in the south, so the economic model of "mulberry fish pond" has appeared in some villages. Cocoon has many colors, but yellow and white are more common, and red and blue are rare. Colored silk is mostly man-made.
Baidu encyclopedia-spring silkworm