
Conifer Sawfly Cocoon (Family Diprinonidae)
In this shot, you can see a circular pattern of puncture holes near the top of the cocoon. I'm not sure why they are there - if it's normal or if it's from a parasitoid.
I think this is a conifer sawfly cocoon. It may be Diprion similis. The cocoon was brown, fibrous, and cylindrical. There was no cover, which indicates that an adult sawfly chewed the circular hole when leaving the cocoon.
Habitat: White pine (Pinus strobus) in a meadow
No species identified
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