Aspen Burrowing Insect: Likely Earwigs, Not Primary Pests

Description

Insects burrowing into aspen bark, leaving holes. Slender, antenna-like fork on tail. Under lumber piles. Thrips-like but with "fork."

Probable ID: Earwigs

• Forceps (pinchers) on rear = "fork."
• Nocturnal, hide in cracks/lumber by day.
• Omnivorous: decaying matter, some live plant tissue.
• Usually minor bark nibbling — not primary tree killers.

Action

1. Collect specimens → garden center/nursery for confirmation.
2. If earwigs: reduce harborages (lumber piles, mulch against trunk).
3. Traps: Rolled newspaper/cardboard tubes at base overnight → shake into soapy water.
4. Bait: Carbaryl granules (if damage significant).

Key Distinction

Are they causing decline or just sheltering? Aspen decline in West often from drought + cankers + borers — not earwigs.