Polygraphus poligraphus Linnaeus, 1758

[Hungarian Version]

Csóka, György and Kovács, Tibor (1999): Xilofág rovarok - Xylophagous insects. Hungarian Forest Research Institute. Erdészeti Turományos Intézet, Agroinform Kiadó, Budapest, 189 pp.


Mn: Firkáló fenyoszú  /  En: Small spruce bark beetle

2-3 mm. Bivoltine, but in favourable years up to three generations may develop. Foodplants are spruce (Picea) and occasionally fir (Abies) and pine (Pinus). The 1.5-2 mm wide, 3-8 branched, star-shaped egg gallery begins from the bark. The irregular larval tunnels are in the inner bark, the pupal chambers are in the bark. In outbreaks it can cause death of single trees and groups of trees. Palaearctic species, also common in Hungary.

 

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