Cooley Spruce Gall Adelgid vs Glassy-winged Sharpshooter
Side-by-side species comparison
| Attribute | Cooley Spruce Gall Adelgid | Glassy-winged Sharpshooter |
|---|---|---|
| Scientific Name | Adelges cooleyi | Homalodisca vitripennis |
| Order | Hemiptera | Hemiptera |
| Family | Adelgidae | Cicadellidae |
| Size | 0.5-1 mm | 12-14 mm |
| Habitat | Forests | Woodlands |
| Diet | Gall Makers | Sap Feeders |
| Regions | North America, Europe | Southeastern US, California, introduced to Tahiti and Hawaii |
| 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.
Did You Know?
The pineapple-shaped galls it forms on spruce tips are often mistaken for small cones.
Glassy-winged Sharpshooter
A large leafhopper that spreads Pierce's disease bacteria devastating to grapevines. It feeds on xylem sap and can process 300 times its body weight in fluid daily.
Did You Know?
It excretes so much liquid while feeding that it produces a fine rain beneath infested plants.