The eastern larch beetle in Alaska.

Richard A. Werner

doi:10.2737/PNW-RP-357

Treesearch

The eastern larch beetle in Alaska.

Informally Refereed

Authors:

Richard A. Werner

Year:

1986

Type:

Research Paper

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-RP-357

Source:

Res. Pap. PNW-RP-357. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 20 p

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Abstract

The eastern larch beetle (Dendroctonus simplex LeConte) exists throughout the range of tamarack (Larix laricina (Du Roi) K. Koch) in interior Alaska where it has a 1-year life cycle. Beetles overwinter as adults in the bark of the trunk below snowline in infested trees. Tamarack trees that are slow growing because of repeated defoliation by larch bud moth (Zeiraphera sp.) or that inhabit cold wet river bottom sites underlain with permafrost are usually susceptible to attack by eastern larch beetles.

Keywords

insects, insect populations, eastern larch beetle, tamarack, interior Alaska

Citation

Werner, Richard A. 1986. The eastern larch beetle in Alaska. Res. Pap. PNW-RP-357. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 20 p