what is this caterpillar?
I found this caterpillar in Santa Barbara, California. I found it interesting that it matched the color of the plant I found it on. I have looked around a bit on the web to identify it without any luck. Can you help? Also, any idea which plant it is eating? Thank you!!
This is a Cloudless Sulphur Caterpillar, Phoebis sennae, also called the Senna Sulphur. The butterfly is a large, clear yellow, fast flying species. The plant is Senna. As a means of camouflage, the caterpillars are often green when feeding on the leaves, and yellow when feeding on the blossoms.