Lepidoptera: Tortricidae Choristoneura occidentalis
Freedman
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| Adult Douglas-fir |
Adult
Douglas-fir B.B. Hostetler |
Green
form adult white fir July 1960 W.C. Guy |
Larvae
& defoliation white fir Malheur NF, OR 1985 I.R. Ragenovich |
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| Larva
on shoot Douglas-fir Mt. Hood NF, OR June 1956 V.M. Carolin, R.B. Hope |
Sixth-instar larva | Sixth-instar
larva white fir Santa Fe NF, NM |
Defoliation |
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| Defoliation Santiam Pass Willamette NF, OR |
Defoliation | Defoliation Umatilla NF, OR |
Defoliation |
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| Insecticide
application by helicopter Mt. Hood NF, OR July 1989 W.M. Ciesla |
Larva hanging by silk strand | 100% defoliation
for 2 years Malheur NF, OR 1983 D.B. Twardus |
Topkill |
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| Defoliation | Defoliation Ochoco NF, OR W.M. Ciesla |
Defoliation Deschutes NF, OR 1992 A. Eglitis |
Eggs R.E. Sandquist |
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| Fifth-instar
larva A. Eglitis |
This webpage was reformatted on May 27, 2008.