Physokermes (genus)
From Pestinfo-Wiki
| Literature database |
|---|
| 12 articles sorted by: |
| • year (recent ones first) |
| • research topics |
| • countries/regions |
| • host plants |
Physokermes sp. on spruce (click on image to enlarge it)
Author: Andrea Battisti, Universita di Padova
Source: IPM Images
Author: Andrea Battisti, Universita di Padova
Source: IPM Images
Physokermes Targioni-Tozzetti, 1868 - (spruce bud scales)
This genus of soft scales contains around 10 species which infest mainly spruce trees. Several species have spread to other countries, causing outbreaks and considerable damage. For example, Physokermes hemicryphus is native to Europe and regarded there to be an important source of honeydew for bees and other insects. On the other hand, it is considered a pest in North America.
| Vernacular names | |
|---|---|
| • Deutsch: | Fichtenquirlschildläuse |
| • English: | spruce bud scales |
The mature females are spherical, reddish brown and bud-like with a diameter of 3-6 mm. There is one generation per year and the 2nd instars overwinter.
Type species: Physokermes hemicryphus
Currently, the following species have been entered into the system:
