Cocoon?

Asked September 12, 2018, 5:24 PM EDT

Wondering if you can identify this. I live in door county, Wi and found this cocoon in a bush. It is whiteish color and about 2" x 1-1/2" long. There are leaves stuck to it and something is alive and moving inside. Heavy for it's size. Just curious. Thank you

Iowa entomology wisconsin

1 Response

Hello!

Very neat find! It's hard to be 100% based just on the cocoon, but I can tell you it's definitely something from the family Saturniidae (the giant silk moths). This group includes luna moths, cecropia moths, polyphemus moths and others. They are large and spectacular insects.
If I had to guess what is inside, I would say a polyphemus moth. If you want to try and rear it out so you can find out for sure, here is a guide on how to do so: https://butterflywebsite.com/articles/raising-saturniid-moths.cfm