I am doing as I always do: unable to decide which photo is best or more engaging, I post all. There were a few of these caterpillars about this year. As far as I can tell, this is not an invasive or noxious or pesky species. It can defoliate a bush or two once in awhile, but it doesn't seem to get out of control. What I don't know is if the spines on the caterpillar will irritate the skin if touched. Therefore, the rule is "don't touch caterpillars." I especially tell the kids this. I don't want any nasty rashes popping up on the kids!