Entomologist Charles Sartwell collecting Ips oregonis from corrugated paper rearing cage. Note vent next to emergence jar. Pringle Falls Field Station, La Pine, Oregon.
Photo by: Ken H. Wright Date: 1963
Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Portland Station Collection; La Grande, Oregon. Image: PS-2867
To learn more about this photo collection (as documented by Torgersen and Wickman) 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.