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Photo#1809674
Brown leaf cocoon in Tulip Poplar Tree, Cashton, WI

Brown leaf cocoon in Tulip Poplar Tree, Cashton, WI
Cashton, Vernon County, Wisconsin, USA
May 5, 2020
Size: 1-2.5”
We bought tulip poplar trees in Cashton, WI two weeks ago and thought these were dead leaves. Just figured out they are cocoons. Wondering if it’s something to keep or get rid of, if it’s invasive or harmful. I run a child care center in my home and it would be cool to watch them hatch, but nervous about what it may be.

Moved

Looks Like A Silkmoth
Looks to be a Silkmoth cocoon. Harmless, though possibly out of range for the most likely species (Callosamia angulifera). Looks vacated though. If you shake it can you hear a pupa rattling inside?

 
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I believe they will be a Promethea Silk moth, I don’t know if they rattle, but the feel full. From what I read, they may not hatch until July! Hopefully, our daycare kids won’t squish them by then! They are low because it’s a new tree!

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