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Phoebis sennae
Caterpillar: Primarily green; yellow stripes on either side running the length of the body; dark markings above yellow stripe. The largest one that I've seen is about 2 inches long. Butterfly: Light green and yellow with brown speckles on wings.
Have been finding the caterpillars on coffee senna plant.
Chesterbperry - thanks for the ID. I added a picture of the butterfly. I put a caterpillar in a bug jar to see what the butterfly would look like.