Matt/PA the pic you posted of a mature Tent Caterpillar is actually the mature Forest Caterpillar variety. The tent variety is similar to that, but with a solid white stripe.
Cool.......learn something new everyday on here.
So they are both tent nesting types but one is just more destructive and a little different in appearance?
Edit: I see it now. I think I was thinking of the row of white dots just down from the solid stripe. The ones my dad has are definitely the tent variety and the pic I showed sure is the forest tent variety.
This link shows them side by side too:
http://www.tent-caterpillar.com/