The fifth and final instar finds the larvae attached to a branch or the ceiling of the cage, struggling skillfully to shed their skin, underneath which is a hardened shell, otherwise known as the pupa, or chrysalis.
Viienda ehk viimase kasvujärgu ajal kinnitub vastne oksa või puurilae külge ning püüab osavalt väljuda kestast, mille all on kõva koor ehk nukukest.