Dave beat me to it. (Hey, I have to sleep at some point.)
Their caterpillars are those Wooly Bear kind. I've seen them a few times and we did raise one at the museum just for kicks one time. I think it was winter and things were kind of slow. That is a little unusual about it being on the floor. I would say either it's very new or very old. When I release new butterflies at the museum lots of them head for the cement even though I have instituted a "Zero tolerance policy" on landing on the ground. No one wants to be stepped on!