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The gall adelgid (Adelges cooleyi) is an adelgid species that produces galls in spruce trees. They infect the new buds of native spruce trees in the foothills of the Rocky Mountains in the spring. They also attack blue spruce to a lesser degree. The insects complete two generations within the year.
The blue spruce (Picea pungens), also commonly known as Colorado spruce or Colorado blue spruce, is a species of spruce tree native to North America in Arizona, Colorado, Idaho, New Mexico, Utah and Wyoming. [4] It is noted for its blue-green colored needles, and has therefore been used as an ornamental tree in many places far beyond its native ...
It is the primary pest of Norway Spruce. Another similar species, the Cooley spruce gall adelgid, is indigenous to North America. This adelgid usually affects Colorado Blue, Sitka, Englemann, and Oriental spruces. [4] The eastern spruce gall adelgid (Adelges abietis Linnaeus) is an introduced species that feeds only on spruce. At least in 1985 ...
Mayetiola piceae, the spruce gall midge, is a species of gall-forming flies in the Cecidomyiidae family. An outbreak of spruce gall midge occurred in northern Alberta and adjacent areas in the Northwest Territories in 1992 (Brandt 2000). [ 1 ]
The spruce grouse (Canachites canadensis), also known as Canada grouse, spruce hen or fool hen, [2] [3] is a medium-sized grouse closely associated with the coniferous boreal forests or taiga of North America. It is the only member of the genus Canachites.
Spruce–fir forests can be found in cold regions at high latitudes or high altitudes throughout the Northern Hemisphere. [1] This includes both areas throughout the high latitude boreal forest of Canada and Russia, [2] [3] as well as mountain ranges at lower latitudes, such as the Rocky Mountains in North America, the Tian Shan in Asia, and the Carpathian Mountains in Europe.
An Eastern Hemlock branch at the Kortright Centre for Conservation.. Tsuga canadensis, also known as eastern hemlock, [3] eastern hemlock-spruce, [4] or Canadian hemlock, and in the French-speaking regions of Canada as pruche du Canada, is a coniferous tree native to eastern North America.
Life in a Gall: The Biology and Ecology of Insects that Live in Plant Galls. Collingwood, Vic.: CSIRO Publishing. ISBN 978-0643106437. Redfern, Margaret (2011). Plant Galls. London: Collins. ISBN 978-0002201445. Russo, Ron (2007). Field Guide to Plant Galls of California and Other Western States. Berkeley, California: University of California ...
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