Insects

Dendroctonus pseudotsugae

Douglas-fir beetle (Dendroctonus pseudotsugae)
Latin Name Dendroctonus pseudotsugae
Common Name Douglas-fir beetle
Biology

Coleoptera (Curculionidae, Scolytinae); adults bore into Douglas-fir phloem; larvae feed in galleries; associated with fungal symbionts; univoltine.

Damage

Adults and larvae disrupt phloem transport, causing tree decline and death; reduces timber quality.

Distribution Regions

Western North America (e.g., U.S. Pacific Northwest, British Columbia, Canada).

Monitoring

Pheromone trapping (aggregation pheromones); monitoring weakened trees; trap logs.

Recommended Traps

Multiple-funnel traps baited with aggregation pheromones (e.g., frontalin).

Literature review

Semiochemical evidence

The cited publications support the exact compound-species relationship. Formulation, ratio, loading, release rate and field lifetime depend on a validated lure protocol and are not inferred here.

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