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Large Green and brown? caterpillar

Large Green and brown? caterpillar
Stillwater Township, Fairview Lake , Sussex County, New Jersey, USA
July 20, 2018
Size: Approx. 3.5 inches
This caterpillar showed up (dead) one morning on the deck of an east shore Fairview Lake cottage, Stillwater Twp., Sussex County, NJ, a few days ago. For size, note that it is on a 4 x 4 inch post top. So it appears to be more than three inches long. Perhaps brown color due to it being dead or is that normal coloration.
ID would be appreciated since I don't think it is a Tomato Hornworm?

Moved from ID Request.

It is one of the giant silk moths (probably luna or polyphemus). Your caterpillar was basically full grown- sad to see it didn't make it. They are facing many challenges including habitat loss, pesticides, and invasive species -especially a tachnid fly that was released to control gypsy didn't work but the fly apparently has a particular taste for silk moth caterpillars. Green color is the color of a healthy caterpillar.

"Hornworm" is a generic reference to sphinx moth caterpillars (can also be large)- most are not pests and are very interesting as caterpillars and moths.



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