This is one of the Prominent moths, Family Notodontidae. When resting, prominents either hold their wings like a roof over the body or roll them, causing the moth to look like a stick . Larvae of some species are oddly shaped and look like parts of the host plant. Others are brightly colored and striped. Some are serious forest pests. Most prominents overwinter as larvae, pupating in a cell in the soil or in a loose cocoon on the ground in the spring .
You did not say where you are located? That may or may not help figure out which prominent species it is .
Thanks for the size compared to lighter...it can be very helpful.
Found this one too!! by: Anonymous
Hi I found this critter this morning in Northern Saskatchewan. What is it???