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What is this molting from?
(i.imgur.com)
Let us help you identify that mysterious object you’ve found.
Currently in CHALLENGE mode: If you've got something obscure knocking about, post a picture, and let's see how we do. Please prefix such posts with "CHALLENGE:" so we know we've got a fighting chance.
It's a cicada nymph shell. Not sure what species but since you said you're in Massachusetts it's might be "Dog Day" Cicada (Tibicen linnei) since it's the most common cicada found there.