spruce gall aphid


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Noun1.spruce gall aphid - a variety of adelgidspruce gall aphid - a variety of adelgid      
Adelges abietis
Adelges, genus Adelges - type genus of the Adelgidae: plant lice
adelgid - any of various insects that feed and form galls on conifers
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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Spiny brown growths resembling hollow cones that form at branch tips on Colorado spruce are caused by an insect called Cooley spruce gall aphid. However, since the insects rarely affect the health of the tree, spraying is not recommended.
What to do in your garden in July. (Checklist Mountain)

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