I've never seen the adult in my area.

Move again to where you like it. I was doing a bulk move by request. I don't know anything about these guys.

This looks like Platarctia parthenos. I don't think this is Pyrrharctia isabella.

Platarctia parthenos larvae do not have setae this bristly. Their setae are longer, more like Arctia caja.

All the Platarctia parthenos larvae i have seen so far look exactly like this one. Mind you, this is not a commonly encountered species as an adult or as a larva. Arctia caja larvae look very different and they do not have the black protuberances on their body that cause those metallic reflections.

Latelly I have been researching these Arctia caja and Platarctia parthenos. Here is an image I found:

Note the big white spots. Arctia caja does not have white spots this big.

That image shown is © Jason Dombroskie from the Moth Photographers Group.

I agree with you, but i have never seen Platarctia parthenos larvae with those white spots. There is some variation between different populations. Both pictures are similar in that those small tubercles are present. Their colour can be black or white apparently. Arctia caja has very long hairs and spiracles visible. Younger instars are generally dark reddish.

The hairs were short and bristly. I still think it's a wooly bear. I wish I had collected it!