| 2108070 |
mountain pine beetle |
Dendroctonus ponderosae |
IUFRO Field Trip 2005, Prince George, British Columbia, Canada |
| 2108033 |
southern pine beetle |
Dendroctonus frontalis |
Ron Billings with large SPB killed pine log. Olancho Region, Honduras |
| 2108034 |
southern pine beetle |
Dendroctonus frontalis |
Ron Billings and Vicente Espino examining pine tree |
| 2108035 |
southern pine beetle |
Dendroctonus frontalis |
Ron Billings in SPB spot |
| 2108004 |
southern pine beetle |
Dendroctonus frontalis |
July 14, 1983, Public hearing at Four Notch Proposed Wilderness Area, Sam Houston National Forest, Texas; Ned Fritz, center, with glasses (Texas Committee on Natural Resources) and George Russell (Lone Star Chapter Sierra Club) seated to his left, protesting US Forest Service plans to control SPB infestations on the Four Notch Proposed Wilderness Area. |
| 2108075 |
mountain pine beetle |
Dendroctonus ponderosae |
IUFRO Field Trip 2005, Prince George, British Columbia, Canada |
| 2108067 |
mountain pine beetle |
Dendroctonus ponderosae |
IUFRO Field Trip 2005, Prince George, British Columbia, Canada |
| 2108068 |
mountain pine beetle |
Dendroctonus ponderosae |
IUFRO Field Trip 2005, Prince George, British Columbia, Canada |