It generally takes about 65,438+04-65,438+08 days for a silkworm to change from a pupa to a moth. When the silkworm chrysalis just pupates, it is soft and yellow, and then it will gradually turn yellow, brown or brown, and the pupa skin will start to harden. When the pupa becomes soft again, the pupa skin is wrinkled and brown, it will generally become a silkworm moth.

Silkworm moths are similar in shape to butterflies. It has white scales, a small spherical head, protruding compound eyes and tentacles, and three pairs of feet and two pairs of wings in the chest. However, because the two pairs of wings are very small, it has lost the ability to fly. Usually, just because a silkworm moth flaps its wings doesn't mean it can fly. Tapeworms and male moths are somewhat different in appearance. The female moth is large and slow-moving, while the male moth is small and fast-moving, and the antenna has long pinnate branches.

Introduction to silkworm chrysalis

Silkworms need about 50 days from cocoon formation to emergence. Silkworms have to go through eggs, ants, mature silkworms, cocoons and moths in their life. Growth and development are related to temperature, humidity and food. The incubation period is10 ~1day, the larval stage is about 25 days, the pupal stage is between 14 ~ 18 days, and the moth stage is 3 ~ 5 days. After eclosion, silkworm moths will not eat any more. After about an hour, its wings become hard, and then it will mate. Each time, the female moth lays 300-400 eggs.

After the female moth is born, its tail will emit a special smell to lure the male moth to mate. After mating, the male moth will die. Generally, after mating for 3-4 hours, the female moth can give birth to fertilized eggs, and then the female moth will slowly leave after laying eggs.

The above contents refer to Baidu Encyclopedia-Silkworm Pupa (Silkworm-shaped).