What's That Bug? does not endorse extermination

chrysalis or cocoon
Location: Mountains of North Carolina
December 2, 2011 9:51 am
Found on Physocarpus , a North American native shrub.
What is inside it?
Thank you for your help.
Signature: Carol

Cocoon of a Giant Silkmoth

Dear Carol,
This is the cocoon of a Giant Silkmoth in the family Saturniidae.  A Cocoon is generally a silken structure that is spun, possibly incorporating leaves, branches or the hairs from the caterpillar in its construction.  The cocoon helps to protect the naked pupa inside.  The pupa of a butterfly is often called a chrysalis.  We hope that helps some with the proper terminology.  We believe this may be a Polyphemus Moth Cocoon (see BugGuide) or possibly a Luna Moth Cocoon (see bugguide), though the cocoons of the Luna Moth generally fall to the ground among leaf litter where a blanket of snow helps to insulate them from the cold.

Cocoon of a Giant Silkmoth

What's That Bug? does not endorse extermination
Location: North Carolina

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