We have those too. I’ve seen them crawling and also laying dead on the driveway and cars.. but these silk worms are different. They are tiny and blow out of the Oaks and they hang from these very thin silk webs. When you walk , it feels like you’re walking into a spiderweb. They’re everywhere. And they drop these little tiny black balls of crap when they shit . Smaller than the Gypsy moths. They’re not defoliating .. but almost every Oak leaf of all species are eaten to some degree. Whether it’s a few holes in the leaf , or most of the leaf is gone.