Butterflies and moths wrap themselves in a chrysalis or cocoon, respectively, in their ____ stage.

noun

1. An intermediate usually quiescent stage of a metamorphic insect (such as a bee, moth, or beetle) that occurs between the larva and the imago, is usually enclosed in a cocoon or protective covering, and undergoes internal changes by which larval structures are replaced by those typical of the imago

noun

1. The developmental stage of a metamorphic insect prior to entering the pupal stage see pupa

   "a prepupa of a moth"