I was out trimming branches from a large cherry tree on my property and while in the tree I felt a burning sensation on my arm. I look to my arm and there is a strangely colored furry caterpillar on my arm chewing on me. It had a red face, patterned green and yellow body, and a bushy yellow tail, about 1 inch in size.
My wife is gravely concerned because she seems to think it is highly venomous, she flicked it off my arm and now I cant find it to take a picture. This occurred about an hour ago and my upper arm is starting to burn. It feels similar to a hornet sting. I am located in western Pennsylvania.
Is this truly something to be concerned about or am I possibly having an allergic reaction? Any idea what kind of caterpillar might have bit me? Are there any highly venomous caterpillars in western PA?