We collected several caterpillars while on a nature walk the other day. Of course we had to bring them home and see what they were going to "grow up to be"!
We constructed them a large double-cup home and made sure to poke several small holes on the top. The cups were taped together so we had no escapees! We also added several stalks of the plant they were found on, all creatures need to eat!
After 2 days, three of our guests had gone into Chrysalis.
I released the others back outside and then we waited ....
and waited ....
After 6 days... we have our first butterfly!
A chrysalis is the pupal stage of butterflies. The term is derived from the metallic gold-coloration found in the pupae of many butterflies, referred to by the Greek term χρυσός (chrysós) for gold.
When the caterpillar is fully grown, it makes a button of silk which it uses to fasten its body to a leaf or a twig. Then the caterpillar's skin comes off for the final time. Under this old skin is a hard skin called a chrysalis.
On emerging the butterfly uses a liquid which softens the shell of the chrysalis. Additionally, it uses two sharp claws located on the thick joints at the base of the forewings to help make its way out. Having emerged from the chrysalis, the butterfly will usually sit on the empty shell in order to expand and harden its wings. However, if the chrysalis was near the ground (such as if it fell off from its silk pad), the butterfly would find another vertical surface to rest upon and harden its wings (such as a wall or fence).
Moth pupae are usually dark in color and either formed in underground cells, loose in the soil, or their pupa is contained in a protective silk case called a cocoon.
It is important to differentiate between pupa, chrysalis and cocoon. The pupa is the stage between the larva and adult stages. The chrysalis is a butterfly pupa. A cocoon is a silk case that moths, and sometimes other insects, spin around the pupa.