Pupa

What is a Pupa?

A pupa is a special stage in the life of some insects. It is when they change from their young form, called a larva, into an adult. Insects that have this stage are called holometabolous insects. They go through four main stages: starting as an egg, then becoming a larva, then turning into a pupa, and finally emerging as an imago, the adult insect.

During the pupal stage, the insect’s body changes dramatically inside a protective case. This transformation is controlled by special chemicals in the insect’s body. The process of becoming a pupa is called pupation.

Different Names for Pupae

Pupae can have different names depending on the type of insect. For example, the pupa of a butterfly is called a chrysalis. The pupa of a mosquito is sometimes called a tumbler. These pupae may also be protected by additional structures like cocoons, nests, or shells.

How Pupae Stay Safe

Pupae are usually still and cannot move, so they can be vulnerable. To stay safe, many pupae are covered with a cocoon, hide in leaves or soil, or stay underground. Some butterflies are protected by ants during their pupal stage.

Fun Facts About Pupae

• The pupal stage can last for weeks, months, or even years, depending on the insect and the temperature.
• For example, monarch butterflies spend eight to fifteen days as pupae.
• When the insect is ready to become an adult, it leaves the pupal case. Most butterflies do this in the morning, but mosquitoes usually do it at night.