The eggs are bright orange. The black caterpillar is banded with white and yellow stripes. It has a row of yellowish-tan spots near the top of the body. There are six black, fleshy filaments. The first pair is near the head. The second pair is on the thorax. The third pair is at the end of the abdomen. The chrysalis is very similar to the Monarch's chrysalis. It is very hard to tell the difference between them. It has 3 or more broods per year.