Jeff Foott / Information sign about Mountain pine beetle sign. Rocky Mountain National Park, USA, October. The current outbreak of mountain pine beetles has been particularly aggressive. This is due to climate c...

Jeff Foott / Mountain pine beetle ( Dendroctonus ponderosae) trying to enter Lodgepole Pine tree, Grand Teton National Park, USA, August. The current outbreak of mountain pine beetles has been particularly aggres...

Jeff Foott / Dead Lodgepole Pine trees killed by Mountain pine beetle (Dendroctonus ponderosae) that have blown down creating a fire hazard. USA, July. The current outbreak of mountain pine beetles has been part...

Jeff Foott / Mountain pine beetle (Dendroctonus ponderosae) entrance hole into Lodgepole Pine tree with sap / pitch tube, USA, August. The current outbreak of mountain pine beetles has been particularly aggressive...

Jeff Foott / Sign forbidding collection of firewood from trees killed by Mountain pine beetle larvae (Dendroctonus ponderosae) in order to prevent spread of beetle. Custer State Park, South Dakota, USA, July. The...