What's That Bug? does not endorse extermination

Can you id this guy?
Dear Bugman,
Found this critter near the bank of the Potomac River in Brunswick, Maryland on August 5th. He was about an inch and a half to two inches long and he was moving pretty fast. Thanks.
Regards, Harvey

Hi Harvey,
At first we thought you had a Tiger Moth, or a Tussock Moth caterpillar, but now we believe this is an American Dagger Moth, Acronicta americana, one of the Noctuids or Owlet Moths. It feeds on Maple and other hardwood forest tree leaves.

What's That Bug? does not endorse extermination

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