By: Marissa Cheyne. Spruce Beetle (Dendroctonus rufipennis) Hosts- Engelmann spruce, rarely lodge pole pine Attack Trees less than 12 inches diameter.

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Presentation transcript:

By: Marissa Cheyne

Spruce Beetle (Dendroctonus rufipennis) Hosts- Engelmann spruce, rarely lodge pole pine Attack Trees less than 12 inches diameter Red-Brown boring dust on bark through Mid May- July

Red Turpentine Beetle (Dendroctonus valens) Host: Ponderosa and lodge pole pine. Can infest any pine species Beetle gallery Largest & Weakest Trees are attacked: Trees also injured by fire, logging, and other damages Very Large Red Pitch tubes

Western Pine Beetle (Dendroctonus brevicomis) Host: Ponderosa Pine Kills trees that are less than 6 inches

Mountain Pine Beetle (Dendrotonus ponderosae) Hosts: All Native and introduced species of pines Kills trees less than 5 inches

Douglas Fir Beetle (Dendroctonus pseudotsugae) Hosts: Douglas Fir, Western Larch Attack trees less than 12 inches

Ambrosia Beetle (Trypodendron spp) Hosts: True Firs, Spruce, Douglas Fir, Hemlock, Larch, Pine Attacks tree that are weak, dying or recently cut

Works Citied Leatherman, D.A.. ""Mountain Pine Beetle"." Colorado State University. Colorado State University Extension, Web. 19 Nov Seybold, S.J.. ""Bark Beetles"." UCIPM Online. UC ANR, Web. 14 Nov Hagle, Susan. "Bark Beetles and Wood Borders". Missoula, Montana: U.S. Department of Agriculture Forest Service, Print.