| 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). |
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