Acta Scientiarum Polonorum
Silvarum Colendarum Ratio et Industria Lignaria

Abstract The stumps left after trees damaged by lightning were invaded by 20 species of insects, mainly characteristic for weakened trees. Among them the Scots pine (Pinus sylvestris) stumps inhabited by Rhagium inquisitor were the most abundant (79%). Norway spruce (Picea abies) stumps were inhabited in 48% both by Xyloterus lineatus and Hylurgops palliatus. Stumps of other trees such as silver fir (Abies alba), Douglas fir Pseudotsuga menziesii, European beech (Fagus sylvatica) and pedunculate oak (Quercus robur) were inhabited in 23-27% by Rhagium inquisitor (Abies alba), Xyloterus domesticus (Pseudotsuga menziesii), Rhagium mordax (Fagus sylvatica) and Agrilus biguttatus (Quercus robur). No signs of insects activity were found in European larch (Larix decidua) stumps. Beside the mentioned species of insects, the presence of Cryphalus piceae in fir stumps and Phaenops cyanea in pine stumps was observed despite, that these species usually inhabit in fact higher parts of trees.