Dendroctonus rufipennis, the spruce beetle, is a species of bark beetle native to British Columbia, Newfoundland and Labrador, Nova Scotia, Ontario, Quebec, Northern Manitoba, the Yukon, Alaska, Colorado, Wyoming, Montana, and Maine. They are known to destroy forests of spruce trees[1] including Engelmann, White,[2] Sitka, and Colorado blue spruce.[3] Adults average 4 to 7 mm in length.[4]
Dendroctonusrufipennis, the spruce beetle, is a species of bark beetle native to British Columbia, Newfoundland and Labrador, Nova Scotia, Ontario, Quebec...
the oldest needles. Another insect pest is the spruce beetle (Dendroctonusrufipennis) which bores under the bark. It often first attacks trees which...
engelmannii) trees due to episodic outbreaks of the spruce bark beetle (Dendroctonusrufipennis). During the 1940s much of the subalpine zone of Northwest Colorado...
insect pests in forest-destroying plagues: the spruce-bark beetle (Dendroctonusrufipennis) in Yukon and Alaska; the mountain pine beetle in British Columbia;...
in the outer inch of the tree under the bark. Spruce beetles (Dendroctonusrufipennis) have destroyed swathes of spruce forest in western North America...
the spruce bud moth (Zeiraphera canadensis), and spruce beetle (Dendroctonusrufipennis). As well, other budworms, sawflies, and bark beetles, gall formers...
susceptible to attack by other pests such as the spruce beetle (Dendroctonusrufipennis). Serious defoliation can kill the tree. Wikimedia Commons has...
The galleries constructed within spruce trees by spruce beetles (Dendroctonusrufipennis) are under threat from multiple species of fungus which reduce...
Kawuneeche Valley are mountain pine beetle (Dendroctonus ponderosae) and spruce beetle (Dendroctonusrufipennis). In recent years, these species have devastated...
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