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Colorado State University

Colorado State University is one of our nation's leading research universities with world-class research in infectious disease, atmospheric science, clean energy technologies, and environmental science. It was founded in 1870 as the Colorado Agricultural College, six years before the Colorado Territory became a state.

Colorado State University, located in Fort Collins, Colorado, is situated on nearly 5,000 acres of land, including the main campus, a foothills campus, an agricultural campus, and a mountain campus (Pingree Park). Colorado State also has 4,600 acres for research centers, Cooperative Extension offices, and Colorado State Forest Service stations.
Remove Filters: Bark Beetles and Phloem Feeding Insects(X) Conifer(X) Whitney Cranshaw(X)
36 Images of 6 Subjects View Subject List View Image Details View Thumbnails

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Image Subject Name Scientific Name Description
5443180 spruce beetle Dendroctonus rufipennis Tree mortality along White River in Rio Blanco County. This area was near the epicenter of the massive outbreak of this insect in the late 1940s. Photograph taken July 27, 2011.
5443181 spruce beetle Dendroctonus rufipennis Tree mortality along White River in Rio Blanco County. This area was near the epicenter of the massive outbreak of this insect in the late 1940s. Photograph taken July 27, 2011
5443183 spruce beetle Dendroctonus rufipennis Tree mortality along White River in Rio Blanco County. This area was near the epicenter of the massive outbreak of this insect in the late 1940s. Photograph taken July 27, 2011
1455159 blue spruce engraver Ips hunteri
1326058 blue spruce engraver Ips hunteri Crown dieback symptom if infestation
1326057 blue spruce engraver Ips hunteri Early crown fading symptom of infestation
1326060 blue spruce engraver Ips hunteri
1326059 blue spruce engraver Ips hunteri
5382172 mountain pine beetle Dendroctonus ponderosae Female in gallery with eggs  
5382173 banded elm bark beetle Scolytus schevyrewi Dead adult in gallery with larval tunneling being initiated.  
5382164 mountain pine beetle Dendroctonus ponderosae Fresh pitch tubes  
5382165 mountain pine beetle Dendroctonus ponderosae Adult killed in “pitch-out” of ponderosa pine.  
5382166 mountain pine beetle Dendroctonus ponderosae Fresh pitch tubes  
5382167 mountain pine beetle Dendroctonus ponderosae Fresh pitch tubes  
5382168 mountain pine beetle Dendroctonus ponderosae Adult excavating tunnel.  Although this tree is still producing pitch, it has been heavily attacked by mountain pine beetle, and this adult beetle is excavating a larval gallery, treading the oozing pitch.  
5382169 mountain pine beetle Dendroctonus ponderosae Adult excavating tunnel.  Although this tree is still producing pitch, it has been heavily attacked by mountain pine beetle, and this adult beetle is excavating a larval gallery, treading the oozing pitch.  
5382170 mountain pine beetle Dendroctonus ponderosae Fresh pitch tube  
5382171 mountain pine beetle Dendroctonus ponderosae Adult killed in “pitch-out” of ponderosa pine  
5382162 mountain pine beetle Dendroctonus ponderosae Female in gallery with eggs  
5382045 cedar bark beetles Phloeosinus spp. Twig die-back from maturation feeding by adult cedar bark beetles.  
5382042 cedar bark beetles Phloeosinus spp. Twig die-back from maturation feeding by adult cedar bark beetles.  
5382043 cedar bark beetles Phloeosinus spp. Twig die-back from maturation feeding by adult cedar bark beetle.  The opening to the feeding site is at the center of the picture.  
5382044 cedar bark beetles Phloeosinus spp. Twig die-back from maturation feeding by adult cedar bark beetle.  The area of the feeding site has been cut away and exposed.  
5303006 red turpentine beetle Dendroctonus valens
5303007 red turpentine beetle Dendroctonus valens
5303092 mountain pine beetle Dendroctonus ponderosae Recently killed and fading lodgepole pine. Rabbit Ears’ Pass, Routt County, Colorado. September 3, 2007
5303093 mountain pine beetle Dendroctonus ponderosae Recently killed and fading lodgepole pine. Rabbit Ears’ Pass, Routt County, Colorado. September 3, 2007
5303094 mountain pine beetle Dendroctonus ponderosae Recently killed and fading lodgepole pine. Rabbit Ears’ Pass, Routt County, Colorado. September 3, 2007
5303095 mountain pine beetle Dendroctonus ponderosae Recently killed and fading lodgepole pine. Rabbit Ears’ Pass, Routt County, Colorado. September 3, 2007
5303096 mountain pine beetle Dendroctonus ponderosae Fresh pitch tubes produced within 6 weeks. Rabbit Ears’ Pass, Routt County, Colorado. September 3, 2007
5303097 mountain pine beetle Dendroctonus ponderosae Old pitch tubes produced previous year. Rabbit Ears’ Pass, Routt County, Colorado. September 3, 2007
5303098 mountain pine beetle Dendroctonus ponderosae Fresh pitch tubes produced within 6 weeks. Rabbit Ears’ Pass, Routt County, Colorado. September 3, 2007
5303100 mountain pine beetle Dendroctonus ponderosae Old pitch tubes produced previous year. Rabbit Ears’ Pass, Routt County, Colorado. September 3, 2007
5082085 mountain pine beetle Dendroctonus ponderosae pitch out that successfully killed adult attempting to tunnel
5082087 mountain pine beetle Dendroctonus ponderosae dead adult in pitch out produced in tree defense
1455160 blue spruce engraver Ips hunteri Adults on penny

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