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Malacosoma californicum
Numerous caterpillars (moth larvae) of various shades of beige-brown and averaging about 2 inches long, encased in silken webbing.
Pacific Northwest montane forest.
Spotted devouring the vegetation within their "tents" in a near-ground shrub and along an overhead tree branch, part of an infestation extending from low shrubs to tree canopies in the Newhalem Campground in North Cascades National Park.
Your welcome Allen. Great second pic - showing the destructive impact these caterpillars have.