9/25/2011Â Â I found this caterpillar crawling on the ground – Buffalo County, Wisconsin
9/26/2011Â I kept it in a container with willow leaves to eat.
Late in the fall, when it had stopped eating (and all the willow leaves were gone), and the weather was cold, I put the caterpillar in a plastic container with some wood chips.Â I put the plastic container in a clay flowerpot, sunk up to its rim in the ground, and covered with a clay saucer with a rock on top to keep animals out.Â I left it there for the winter.Â When I took the container out at the end of March, 2012, the caterpillar was crawling around inside.Â I put it back into a jar, with the wood chips, and a sprig of willow.
5/3/2012Â Â Caterpillar and wood chips
5/3/2012Â Â Willow with feeding damage from the caterpillar
5/23/2012Â Â I noticed that the caterpillar had pupated.Â I think it had actually happened earlier, but I hadn’t realized because the caterpillar had shed its whole skin.Â I wasn’t looking very closely, and I thought the skin was the live caterpillar.
5/23/2012Â Â Another view of the pupa
5/23/2012Â Â Shed skin
5/23/3012Â Â Shed skin
6/11/2012Â Â Â Adult hatched
6/11/2012Â Â Â Adult
6/11/2012Â Â Â I released the adult
Buffalo County, Wisconsin