Dave Powell's Images
Title: SilviculturistOrganization: USDA Forest Service
Unit: Umatilla National Forest
Country: United States
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Lepidoptera(X)
| 21 Images of 7 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 0976064 | cone worms | Dioryctria spp. | Salida Ranger District |
| 0976065 | western spruce budworm | Choristoneura freemani | distant view of mortality |
| 0806072 | western spruce budworm | Choristoneura freemani | Group of three trees showing some budworm resistance; South Platte Ranger District, Pike National Forest, south-central Colorado |
| 0806075 | western spruce budworm | Choristoneura freemani | sitting on needle. |
| 0806071 | western spruce budworm | Choristoneura freemani | Starr Ridge area mortality. Bear Valley Ranger District, Malheur National Forest, northeastern Oregon |
| 1212015 | Douglas-fir tussock moth | Orgyia pseudotsugata | Indian Creek area, Heppner RD, Umatilla NF, 2001 |
| 0806073 | western spruce budworm | Choristoneura freemani | two trees side by side; one dead, one alive; Both trees were exposed to intense feeding by western spruce budworm; one was completely defoliated, whereas the other sustained relatively minor damage, suggesting by their proximity that some sort of genetic resistance may be involved. Starkey Experimental Forest, Wallowa-Whitman National Forest, northeastern Oregon |
| 1210057 | sugar pine tortrix | Choristoneura lambertiana | seedling with damaged top |
| 1212014 | Douglas-fir tussock moth | Orgyia pseudotsugata | Heppner RD, Umatilla NF |
| 0806070 | western spruce budworm | Choristoneura freemani | with 4-foot topkill from defoliation. Malheur National Forest, northeastern Oregon |
| 0806065 | western spruce budworm | Choristoneura freemani | Saplings & small poles with topkill from defolliation. Malheur National Forest, northeastern Oregon |
| 0976066 | western spruce budworm | Choristoneura freemani | 1951 |
| 0806066 | western spruce budworm | Choristoneura freemani | Mortality. Aldrich Mountains, Bear Valley Ranger District, Malheur National Forest, northeastern Oregon |
| 0806064 | western spruce budworm | Choristoneura freemani | seedling missing about 50% of its foliage from defoliation. Malheur National Forest, northeastern Oregon |
| 1210076 | fall webworm | Hyphantria cunea | Webs in foliage |
| 1207039 | larch casebearer | Coleophora laricella | larch defoliated by casebearer near the junction of the Mt. Emily road and interstate 84. |
| 1212097 | white satin moth | Leucoma salicis | Elk Flat, Walla Walla RD, Umatilla NF |
| 1212098 | white satin moth | Leucoma salicis | Distant view of forest damaged by satin-moth defoliation; Elk Flat, Walla Walla RD, Umatilla NF |
| 1212099 | white satin moth | Leucoma salicis | Close-up view of stand with defoliation; Elk Flat, Walla Walla RD, Umatilla NF |
| 1359042 | western spruce budworm | Choristoneura freemani | View of unsalvaged area about 10 years after the end of a major outbreak, near Owens Creek project area, North Fork John Day Ranger District, Umatilla National Forest, northeastern Oregon |
| 0806076 | western spruce budworm | Choristoneura freemani | Airplane applying DDT during a 1951 suppression project on Umatilla National Forest, northeastern Oregon |
