1. It usually takes 10- 15 days for silkworm pupae to become moths. When a silkworm chrysalis becomes a moth, it is usually unnecessary to feed it. In a few days, the moth will be born. At this time, you can put the paper under it, so that the silkworm eggs will be spread on the paper towel, and then the moth will gradually die.

The life span of a silkworm is only 40 days. The female moth will be bigger and the male moth will be smaller.