I spotted at least a dozen of the polydamas swallowtail caterpillars on my Dutchman pipe this morning.

These are among my favorites as they eat in clusters when they are younger, only devouring the youngest leaves. Often times when you walk in the garden you see leaves falling, as they chomp away on certain parts, letting the rest fall to the ground.

The female butterfly will lay anywhere between 10 to 14 yellow, to orange eggs in clusters, typically on newly developed stems, or growing tips of its host plant. The caterpillars go through four instars, anywhere from 19 to 24 days, before they are ready to form its chrysalis. The colors of the caterpillars are a bit different during the first instar, with tan and small tubercles. Once the caterpillar molts into the second instar, they become dark brown with larger tubercles.