Bark Beetle Complex
Insect Pest
High Threat
Identification & Biology
Multiple bark beetle species (Ips, Dendroctonus) attack drought-stressed conifers. Trees show fading needles, boring dust at base, and die within weeks. Decades of drought and fire suppression have created vulnerable forests.
Current Status
Ongoing - drought-weakened trees are highly susceptible.
States affected:
Arizona
Nevada
New Mexico
What Homeowners Should Do
Water conifers deeply during drought. Thin overcrowded stands. Remove infested trees promptly. Preventive bark spray (carbaryl, permethrin) on high-value trees before beetle flight season.
Identification Photos
Related Threats
Check Your Trees
Enter your zip code to see which pests and diseases threaten trees in your area.
Search by Zip Code