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Published byDana Alexia Barton Modified over 9 years ago
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By: Marissa Cheyne
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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
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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
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Western Pine Beetle (Dendroctonus brevicomis) Host: Ponderosa Pine Kills trees that are less than 6 inches
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Mountain Pine Beetle (Dendrotonus ponderosae) Hosts: All Native and introduced species of pines Kills trees less than 5 inches
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Douglas Fir Beetle (Dendroctonus pseudotsugae) Hosts: Douglas Fir, Western Larch Attack trees less than 12 inches
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Ambrosia Beetle (Trypodendron spp) Hosts: True Firs, Spruce, Douglas Fir, Hemlock, Larch, Pine Attacks tree that are weak, dying or recently cut
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Works Citied Leatherman, D.A.. ""Mountain Pine Beetle"." Colorado State University. Colorado State University Extension, 3 2012. Web. 19 Nov 2012.. Seybold, S.J.. ""Bark Beetles"." UCIPM Online. UC ANR, 08 2012. Web. 14 Nov 2012.. Hagle, Susan. "Bark Beetles and Wood Borders". Missoula, Montana: U.S. Department of Agriculture Forest Service, 1987. 34-45. Print.
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