The cloudless sulphur, phoebis sennae, has been one of the most challenging butterflies to photograph in the garden. Today I was able to capture a few good photos of her laying eggs on my cassia tree.

I read that under the yellow scales of their wings, hides a yellow-green layer of scales.

The caterpillars will eat leaves from both the cassia, and senna plants, both members of the pea family. I have noticed that the caterpillars change colors throughout their instars, which I read is dependent on the color of leaves, blooms they eat. If the leaves are green, the caterpillar is dominantly green. If the consume yellow blooms they change to that color.