When I start a new "Round" I am sometimes not sure what new caterpillars I have, so here is a list if you are looking for something specific or doing a search:
Round 1 - Small Tortoiseshell Butterflies - (ST)
Round 2 - An unknown caterpillars that unfortuantely didn't make past a pupa.
Round 3 - Cinnabar Moths - (CM)
Round 4 - Peacock Butterflies - (PB)