When does the the caterpilllar turn to a crysilist?

The caterpillar transforms into a chrysalis during the pupal stage of its life cycle, which occurs after it has reached a certain size and has fed sufficiently. This process, known as pupation, involves the caterpillar finding a secure place to attach itself, where it sheds its skin and forms the chrysalis. Inside the chrysalis, the caterpillar undergoes significant transformation, eventually emerging as a butterfly. This stage typically lasts several days to weeks, depending on the species and environmental conditions.