The caterpillar is shiny red. It has a silver stripe edged with black on each side of the body. It has silver spots edged with black along the top of the body. There are six rows of black spines. The head has two long black spines with clubbed ends. The chrysalis is dark brown or tan. It has gold eyes and short gold spines. On the wing cases, it has a black marking shaped like a "T". It has 1-3 broods per year.