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Pin Oak Webbing on Branches: Harmless Bark Lice

Silvery webbing moving up thick Fort Myers pin oak branches = bark lice (psocids/tree cattle). They eat lichens, fungi, dead matter—not the tree. Webbing is protective.

No Control Needed

Beneficial scavengers.
If webbing bothers you: blast with hose.
Insecticides kill them but aren't warranted.

Populations cycle seasonally. See Auburn guide.

Trees: Live Oak Covered in Fine Webbing? Bark Lice Are Harmless; Pin Oak Recovery After Improper Mulching and Soil Buildup; Dead Pin Oak Standing Time: St. Louis Timeline; Pin Oak Webbing on Branches: Harmless Bark Lice; Black Wet Areas on Oak Trunk: Borer Damage, Not Fatal; Iron Chlorosis in Pin Oaks: Diagnosis and Soil Treatment; Oak Trunk Webbing: Harmless Bark Lice; White Webbing on Oak Trunk and Branches: Harmless Bark Lice; Red Oak and Pin Oak Near House: Placement Concerns; Pin Oak: Pyramidal Form, Brilliant Scarlet Fall Color

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