Found this stunning guy on a rose bush leaf. It’s about an inch long. I live in SW Oregon, in a forest. This caterpillar was in my garden which has a variety of flowers, fruits and vegetables. It’s the only one I saw, and I’ve never seen one like it before.
Your caterpillar is the paddle caterpillar which is known as the funerary dagger moth.
This insect is found over North America but has been found spotty in the Midwest. Common in the northwest but uncommon in other areas.
The caterpillars feed on leaves of alder, apple, birch, blueberry/huckleberry (Vaccinium spp.), cottonwood, dogwood, elm, hazel, hickory, maple, oak, and willow.