Amazing looking cats.

That is a cool looking caterpillar!

I don't think it is the adult, but I did find pics of an orange beetle with black polk a dots that uses A. lanaria as a host. LOL.

I don't know what they are, Geni, but they might be faithful beauty moth/composia fidelissima cats or another type of composia. The picture of the faithful beauty moth cat in my book shows a bright rose pink caterpillar, but it says they can be pink-red, scarlet or fiery red-orange. The black dots with setae arising from them, and a few long white hairs on the front and back of their bodies is also the same as composia. There is at least one other type of composia, that is c. credula, that it could be. Faithful beauty moths eat, among other leaves, echites and cynanchum, cynanchum being in the milkweed family, so that agrees.
Maybe if you Google composia credula, you can find a picture of a caterpillar.
Sherry

gcertain is your pine needle milkweed still growing?