Nuka Passage, Kenai Peninsula, Alaska, United States


Spruce Aphid (Elatobium abietinum) Damage


Spruce aphid damage mapped during aerial detection survey since 1987. Years with heavy aphid outbreaks are distinguished by color. Spruce aphids were confirmed on the Kenai Peninsula for the first time in 2015. (Courtesy of U.S. Forest Service)
Spruce Aphid Damage Nuka Passage (Photo by Nathan Lojewski)
Spruce aphids feeding on the needles of Sitka spruce. Feeding damage causes the needles to turn yellow, then brown, then fall off. (Courtesy of U.S. Forest Service)

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