What's the Difference Between a Cocoon and Chrysalis?

While pupa can refer to this naked stage in either a butterfly or moth, chrysalis is strictly used for the butterfly pupa. A cocoon is the silk casing that a moth caterpillar spins around it before it turns into a pupa. ... This is the larva's final molt as it transforms to a chrysalis.

Do butterflies make cocoons or chrysalis?

Butterflies make a chrysalis, while other insects—like the tobacco hornworm caterpillar—makes a cocoon and becomes a moth. They will stay and transform over time into a butterfly or a moth. Most butterflies and moths stay inside of their chrysalis or cocoon for between five to 21 days.

Why do they call it a chrysalis and not a cocoon?

The main difference between a chrysalis and a cocoon is that the latter is a life stage, while a cocoon is the actual casing around the caterpillar as it transforms. Chrysalis is the term used to refer to the stage during which the caterpillar transforms into the butterfly.