Exstrom Laboratories
Scientific Instruments
Copyright 2005-2020
Exstrom Laboratories LLC
Authors: Stefan and Richard Hollos
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Creative Commons Attribution 4.0 International License.
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Macro/Micro Picture of the Day
August 23, 2020
Cooley Spruce Gall
Here is a Cooley spruce gall found on a blue spruce in Longmont, Colorado. These galls resemble pineapples and are produced by a tiny aphid-like insect called a Cooley spruce gall adelgid. The insects require a Douglas fir to complete their life cycle.
Equipment used: Canon EOS Rebel T5i with a standard zoom lens (EF-S 18-55 mm).