Pupa
A pupa (plural: pupae or pupas) is part of becoming an adult for some insects, like some butterflies, moths, beetles, flies, and bees. The pupal stage comes after being a larva; the next stage is adulthood.
The pupa stage of a butterfly, called a chrysalis (plural "chrysalids"), is a well-known example of a pupa because they are often found in the open.
Insects
Developmental biology
Zoology