1958. Colonizing Laricobius erichsonii predators on balsam woolly adelgid infested subalpine fir. Biological control. Willamette Pass, Oregon.
Colonizing Laricobius erichsonii predators on balsam woolly adelgid infested subalpine fir. Biological control. Willamette Pass, Oregon.
Photo by: Ken H. Wright
Date: May 1958
Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection.
Collection: Portland Station Collection; La Grande, Oregon.
Image: PS-2015
To learn more about this photo collection see:
Wickman, B.E., Torgersen, T.R. and Furniss, M.M. 2002. Photographic images and history of forest insect investigations on the Pacific Slope, 1903-1953. Part 2. Oregon and Washington. American Entomologist, 48(3), p. 178-185.
For more information about Chermes see:
ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/86...
Mitchell RG. 1962. Balsam woolly aphid predators native to Oregon and Washington. Technical Bulletin 62. Agricultural Experiment Station, Oregon State University. 63 p.
For additional historic forest entomology photos, stories, and resources see the Western Forest Insect Work Conference site: wfiwc.org/content/history-and-resources
Image provided by USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth
1958. Colonizing Laricobius erichsonii predators on balsam woolly adelgid infested subalpine fir. Biological control. Willamette Pass, Oregon.
Colonizing Laricobius erichsonii predators on balsam woolly adelgid infested subalpine fir. Biological control. Willamette Pass, Oregon.
Photo by: Ken H. Wright
Date: May 1958
Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection.
Collection: Portland Station Collection; La Grande, Oregon.
Image: PS-2015
To learn more about this photo collection see:
Wickman, B.E., Torgersen, T.R. and Furniss, M.M. 2002. Photographic images and history of forest insect investigations on the Pacific Slope, 1903-1953. Part 2. Oregon and Washington. American Entomologist, 48(3), p. 178-185.
For more information about Chermes see:
ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/86...
Mitchell RG. 1962. Balsam woolly aphid predators native to Oregon and Washington. Technical Bulletin 62. Agricultural Experiment Station, Oregon State University. 63 p.
For additional historic forest entomology photos, stories, and resources see the Western Forest Insect Work Conference site: wfiwc.org/content/history-and-resources
Image provided by USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth