Mountain Shieldbug vs San Jose Scale
Side-by-side species comparison
| Attribute | Mountain Shieldbug | San Jose Scale |
|---|---|---|
| Scientific Name | Canthophorus impressus | Diaspidiotus perniciosus |
| Order | Hemiptera | Hemiptera |
| Family | Cydnidae | Diaspididae |
| Size | 4-6 mm | 1-2 mm diameter |
| Habitat | Tundra & Arctic | Orchards |
| Diet | Root Feeders | Fruit Feeders |
| Regions | Scandinavia, Scotland, northern Russia, alpine Europe | Worldwide temperate regions |
| Conservation | Least Concern | Not Evaluated |
Mountain Shieldbug
A small, dark brown to black burrowing shieldbug found in Arctic and alpine habitats. It has a broadly oval body with a prominent scutellum. Adults live at the base of plants and in soil crevices.
Did You Know?
This shieldbug emits a strong defensive odor when disturbed, which is particularly pungent in cold Arctic air.
San Jose Scale
A tiny armored scale insect that forms gray encrustations on the bark and fruit of apple, pear, and stone fruit trees. It was one of the first pests to prompt quarantine legislation.
Did You Know?
Its discovery in San Jose, California in 1880 led to the first plant quarantine law in the United States.