Bombyx mori (scientific name: bombyx mori) is an insect of Lepidoptera, which is the main raw material source of silk and occupies an important position in human economic life and cultural history. Originated in China, South China and Taiwan Province Province, commonly known as silkworm baby or silkworm girl.
The English name of silkworm is "silkworm" (meaning "filariasis") because it weaves cocoons with silk. Cocoons are made of 300-900 meters long silk. Today, China's cocoon and silk production and export both account for more than 70% of the world's total, and it has become a cocoon and silk power that can dominate the world's cocoon and silk price trend.
Silkworm eggs: Silkworms reproduce with eggs. Silkworm eggs look like fine sesame seeds, about 1 mm wide and about 0.5 mm thick. A female moth can lay 400 ~ 500 silkworm eggs. 1700 ~ 2000 silkworm eggs weigh about 1g and have a diameter of 0.2cm. The color of silkworm eggs is light yellow or yellow at first. After 1 ~ 2 days, it turns into light red bean color and red bean color, and after 3 ~ 4 days, it turns into gray green or purple.
No longer changing, this is called fixing color. The outer layer of silkworm eggs is a hard eggshell with yolk and serosa inside. Embryos in fertilized eggs constantly absorb nutrients during development and gradually develop into ant silkworms, which crawl out of the eggshell and turn white or light yellow after the eggshell is empty.