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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.
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Image Subject Name Scientific Name Description
5406082 walnut twig beetle Pityophthorus juglandis Lindgren funeling trapping of walnut twig beetle in Wheat Ridge, colorado. tree died during spring 2009.
5406059 walnut twig beetle Pityophthorus juglandis Pupae within trunk.
5406060 walnut twig beetle Pityophthorus juglandis Larvae and pupa. The geosmithia fungal associate is sporulating profusely around the pupal cells.
5406061 walnut twig beetle Pityophthorus juglandis Beetle gallery in Arizona wlanut. Callus tissue borders and confines this point of injury.
5406063 walnut twig beetle Pityophthorus juglandis External view of beetle gallery in Arizona walnut. Callus tissue borders and confines this point of injury.
5406064 walnut twig beetle Pityophthorus juglandis Logs skinned with a draw knife. These logs were highly attractive to adults, but larval survival was not noted in the skinned logs.
5406065 walnut twig beetle Pityophthorus juglandis Logs debarked with a chain saw. Numerous larvae successfully completed development in this log.
5406058 walnut twig beetle Pityophthorus juglandis Adult beetles withini nuptial chamber.
5406083 Thousand Cankers Disease Geosmithia morbida First in a series of two. Black walnuts that have recently died from thousand cankers disease. Photgraph taken June 11, 2009. Dieback was noted in September 18, 2008.
5406077 Thousand Cankers Disease Geosmithia morbida Canker produced following introduction of Geosmithia(isolate 12-181) into Northern california walnut seedling. Associated with walnut twig beetle.
5406078 Thousand Cankers Disease Geosmithia morbida Canker produced one week following introduction of Geosmithia (isolate 12-181) into southern California walnut seedling. Sporulation of the fungus is occuring at the edges of the wound.Associated with walnut twig beetle.
5406079 Thousand Cankers Disease Geosmithia morbida Canker produced approximately 5 weeks following introduction of Geosmithia (isolate 12-181) into Southern California walnut seedling. Sporulation of the fungus is occuring at the edges of the wound.
5406080 Thousand Cankers Disease Geosmithia morbida Canker produced approximately five weeks following the introduction of Geosmithia (isolate 12-181) into black walnut seedling. Associated with walnut twig beetle.
5406081 Thousand Cankers Disease Geosmithia morbida Canker produced approximately five weeks following introduction of Geosmithia (isolate 12-181) into black walnut seedling. Associated with walnut twig beetle.
5406074 Thousand Cankers Disease Geosmithia morbida Introduction of Geosmithia into wound during evaluation of Juglans susceptability to fungal pathogen of thousand cankers. Assocaited with walnut twig beetle.
5406075 Thousand Cankers Disease Geosmithia morbida Evaluation of Juglans seedlings for susceptibility to Geosmithia, the fungal pathogen of thousand cankers. Associated with walnut twig beetle.
5406076 Thousand Cankers Disease Geosmithia morbida Canker produced by control inoculation (1.2 PDA agar) of Norhtern california walnut. Normal wounds with no canker development results from this inoculation. Associated with walnut twig beetle.
5406068 Thousand Cankers Disease Geosmithia morbida Black walnut recently killed by thousand cankers  disease. Associated with walnut twig beetle.
5406069 Thousand Cankers Disease Geosmithia morbida Black walnuts recently killed by thousand cankers. Symptoms were first noted two years prior and trees recieved multiple applications of soil-applied imidacloprid.associated with walnut twig beetle.
5406070 Thousand Cankers Disease Geosmithia morbida large hybrid walnut fell after succumbing to thousand cankers disease. Associated with walnutt wig beetle.
5406071 Thousand Cankers Disease Geosmithia morbida Large hybrid walnut fell after succumbing to thousand cankers disease.
5406072 Thousand Cankers Disease Geosmithia morbida Wounding of walnut with hollow cone punch to determine susceptibility to Geosnithia fungus. Associated with walnut twig beetle.
5406067 Thousand Cankers Disease Geosmithia morbida Crown thinning and dieback associated with end stage thousand cankers disease. Asociated with walnut twig beetle.

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