Those tan patches on the tree bark are gypsy moth egg masses. I saw a lot of them when I hiked last week in an area that was particularly hard hit. The eggs will hatch next spring and the caterpillars will devour what leaves the trees have managed to put out.
The normally cool, shady trail was harshly sunlit, because there was so little canopy. Grass was growing in places where the sun now penetrates. Many of the pines were completely denuded.
Here’s another look at those eggs. If you see any on trees or outdoor furniture on your property, scrape them off. And keep your fingers crossed that next year, the infestation won’t be as terrible as this year’s.