Tussock Moth Apr 2026

: They serve as a primary food source for birds, beetles, and wasps. Their droppings (frass) also return vital nitrogen to the soil.

The (family Lymantriidae) is best known for its larval stage—strikingly hairy caterpillars decorated with dense, brush-like tufts called "tussocks" . While they are essential members of their ecosystems, they are often recognized for the skin irritation their hairs can cause and the significant defoliation their outbreaks can bring to forests. The Caterpillar: "Danger Fluff" tussock moth

: Those fuzzy hairs aren't just for show; they are urticating hairs (barbed bristles) that can break off into the skin, causing a burning, itchy rash known as dermatitis. : They serve as a primary food source

: These voracious eaters can skeletonize leaves, sometimes stripping entire trees during outbreak years. Common hosts include Douglas-firs, oaks, and maples . While they are essential members of their ecosystems,