Oak Trunk Webbing: Harmless Bark Lice

White, tightly woven webbing covering large trunk area on oak. Neighbors' oaks unaffected. Townhouse setting.

ID: Bark Lice (Psocids)

Webbing from high populations in humid conditions. Covers trunk, branches, even roots—but not foliage.

Zero Harm

Feed on algae/fungi/debris on bark. "Nature's cleaning crew." Webbing degrades naturally.

If Must Remove

• Soapy water spray (2 tbsp/gal).
• Water blast (they rebuild fast).
• Insecticide (unnecessary).

Best: ignore. They'll disappear with drier weather.