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Mountain Pine Beetle

Updated 2019-10-29
  • Photo 1

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    The gray trees in this picture are lodgepole pine killed by mountain pine beetle. This picture was taken near Willow Creek Pass in north-central Colorado in 2012, approximately 10 years after the outbreak began in this area.
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  • Photo 2

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    A dead mountain pine beetle at the base of a tree. The beetles are about the size of a grain of rice.
    Photo 2
  • Photo 3

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    A mountain pine beetle being ‘pitched out’ after unsuccessfully attacking a tree.
    Photo 3
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    Newly-established trees are prevalent in mountain pine beetle-attacked forests.
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