One of my apple trees has what looks like a spider web/silk net wrapped around the last 6 to 8 leaves on one branch. Those leaves have become brown and shriveled.
Inside there are "tons" of very tiny caterpillars moving around. I've attached two pics. I don't want to ruin a good thing, but I also want to prevent a bad thing from happening before it's too late. I don't know if these are just a bunch of caterpillars turning into future butterflies (good thing), or an angry horde of caterpillars that will consume my apple tree and all my hopes and dreams. That last part would be bad, to clarify.
Thanks in advance for your experienced guidance.