Pupae will become silkworm moths. Silkworm pupae will grow into moths. Silkworm pupae will become moths when they grow up. When the silkworm chrysalis just pupates, its body color is light yellow, its body is tender and soft, and it will gradually turn yellow, brown or brown, and the pupa skin will become hard. After 12 to 15 days, the pupa becomes soft again. When the pupa skin is a little wrinkled and turns brown, the pupa will become a moth.