White "Worms" in Tree: Beetle Larvae (Borers)

Friend removing dead branch: 2-inch white "worms" clustered in tree. Homeowner fears they'll infest house wood.

ID: Wood-Boring Beetle Larvae

• Most borers attack dead, dying, or stressed trees. Healthy trees resist.
• Larvae = "worms" (grubs) with distinct heads, legs (often reduced).
• Don't infest seasoned lumber (too dry). Exception: powderpost beetles (tiny).

What You Saw

Likely cerambycid (longhorn) beetle larvae or similar. Photo needed for certainty.

House Risk: Near Zero

• Firewood brought indoors: beetles may emerge but won't reinfest.
• Structural infestation requires specific conditions (moisture, wood type).

If more found, photograph. No treatment needed for tree removal.