We have chrysalis

Well we didn't have caterpillars for very long, they formed a chrysalis overnight. The caterpillars kept lumping up to the roof of the tank and then attached themselves.

Then in the morning we saw that they had changed and are now tucked into the world of their chrysalis.

Butterflies such as these ones (Lemon Emigrant) hatch from a chrysalis. The chrysalis is a life stage made of a hardened protein. A cocoon is generally spun with silk and perhaps leaves or sticks, by the pupa of moths.

It's really lovely to be watching this process and the transformation into a butterfly.