Cooley Spruce Gall Adelgid vs Say's Stink Bug

Side-by-side species comparison

Attribute Cooley Spruce Gall Adelgid Say's Stink Bug
Scientific Name Adelges cooleyi Chlorochroa sayi
Order Hemiptera Hemiptera
Family Adelgidae Pentatomidae
Size 0.5-1 mm 13-17 mm
Habitat Forests Farmland
Diet Gall Makers Sap Feeders
Regions North America, Europe North America
Conservation Not Evaluated Least Concern

Cooley Spruce Gall Adelgid

A gall-forming adelgid that alternates between spruce and Douglas-fir. Cone-shaped galls on spruce tips are its most recognizable sign.

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Did You Know?

The pineapple-shaped galls it forms on spruce tips are often mistaken for small cones.

Say's Stink Bug

A bright green stink bug common in arid and semi-arid habitats of western North America. It can be a significant pest of dry-farmed crops.

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Did You Know?

It overwinters in large aggregations under sagebrush bark, sometimes numbering in the thousands.