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How does western spruce budworm feeding affect western larch?

This pictorial describes how western spruce budworm larvae feed on young western larch and the trees' responses to this damage. Larvae feed not only on the current year's foliage-their usual diet on most coniferous hosts-but also sever stems of current year's shoots. Multiple-topped, bushlike trees…

Author(s): David G. Fellin, Wyman C. Schmidt

Keywords: Lepidoptera (-forest damage), shoot damage, western spruce budworm, Choristoneura occidentalis Freeman, western larch, Larix occidentalis Nutt

Source: Gen. Tech. Rep INT-GTR-7. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station. 25 p.

Year: 1973