We recently got two pine trees (not sure what kind) from a local nursery (Queens NY) and planted them in pots in our backyard (sadly there is no actual ground available to plant them). One of the trees looks very healthy, but when examining it the other day, I noticed some very fine soft webbing in the branches and on the trunk. I am very new to gardening (and thus very happy to have found this forum), but I'm guessing it's some kind of silkworm? I haven't seen any actual silkworms, or damage to the tree, but I don't want to wait for this to become a problem. I have attached two photos, one is a thick web on the trunk, the other is a looser web in the branches (it's wet because I had just sprayed down the tree).
Anybody know what this may be, or what the best treatment (if any) is needed?