This is pretty cool, because we have almost the entire cycle (I just don’t have photos of the eggs). It’s a White-rayed Patch butterfly, Chlosyne ehrenbergii, and caterpillar, and chrysalis, all in Cuernavaca Mexico at an altitude of 1580 meters, in October 2014. They even picked the plant as Buddleja cordata, the genus of which is called Butterfly Bush. In Spanish the name is “Mariposa parche negra”. It grew out of a drain, and I tried to kill it for a few years fearing it would block the drain but I failed. So it grew to a few meters in diameter and these butterflies were over it for years, until a particularly heavy load of caterpillars ate enough of it that it didn’t recover.