1, head
There are eleven wrinkles on the top of the male silkworm's head, which are the head, tail and nine joints in the middle. Female silkworms have nine wrinkles, which are head, tail and seven knots in the middle.
2, the body
The female silkworm's body is milky white, while the male silkworm has several black and gray fine lines.
Step 3: feet
Silkworms have seven pairs of feet, three in front and four in the back. Male silkworms have hair on their feet, while female silkworms have no hair on their feet.
4. Abdomen
On the ventral surface of the eighth and ninth ventral nodes of the female silkworm tail, there are a pair of milky white dots, which are called reproductive anterior disk and reproductive posterior disk respectively. On the other hand, the male silkworm has an oval dot in the center of the ventral junction of the eighth and ninth abdominal segments, which is called a vesicle.
Living habits of silkworms:
Silkworm is an oligophagous insect. Besides mulberry leaves, you can also eat Zheye, Elm, crow onion, dandelion and lettuce leaves. The essential nutrients of silkworm include protein, carbohydrates, lipids, vitamins, inorganic salts and water. Mulberry leaves are the most suitable natural food for silkworms.
After eating mulberry, the larvae grow rapidly. Under suitable temperature conditions, a silkworm molts once every 6-9 days, and it takes about 24-32 days to eat 20-30 grams of mulberry leaves (5-6.2 grams of dry matter). Generally, after four times of sleep and molting, its weight increases about 1000 times when it grows extremely. Spinning cocoon is an instinct for silkworm to adapt to the environment.