Pristiphora abietina
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Author(s): Petr Kapitola, State Phytosanitary Administration
Source: IPM Images
Pristiphora abietina (Christ, 1791) - (little spruce sawfly)
This sawfly is a serious pest of spruce in central Europe, causing outbreaks that last from several years to several decades. The damage can result in a growth reduction of up to 30% on the attacked trees. P. abietina breeds on Norway spruce (Picea abies), where the females lay eggs on the emerging shoots in spring and the larvae feed exclusively on the young needles. In the summer the fully grown larvae drop to the ground and spin a cocoon at the base of the trees.
There is one generation per year and the larvae overwinter as diapausing prepupae in the cocoons. Pupation takes place the following spring, but can be delayed by one or more years. Entomopathogenic fungi and predators appear to be significant mortality factors for the larvae spinning cocoons on the ground (Führer et al., 2001).
Synonyms:
Lygaeonematus abietina
Pristiphora pini
| Vernacular names | |
|---|---|
| • Deutsch: | Kleine Fichtenblattwespe Fichtenblattwespe |
| • English: | little spruce sawfly lesser spruce sawfly gregarious spruce sawfly |
| • Español: | nemato de la picea |
| • Français: | tenthrède de l'épinette némate de l'épicéa |
