Yellow Butterfly on Red Flowers

This is a Cloudless Sulphur, Phoebis sennae. It's one of several butterflies in the Family Pieridae which includes Whites, Yellows and Sulphurs, that we often see in our area of Florida. This one is happily enjoying the bright red flowers of the Tropical Sage. I often see them on Red Penta and Pagoda Plant flowers as well.