larvae chew off the silk on the ventral part of the case and fasten it, using silk, to a rock when ready to pupate. inside of the case, the larva will spin a brown, silken cocoon where it will pupate. this life stage last for about month, unless they are in diapause. the pupae are exarate and decticous, this means that the pupa are capable of using their mandibles. chewing the silk holding the case to the rock, the pupa will then float to the surface. inside is a pharate (young, unsclerotized) adult that will emerge and undergo sclerotization.