Beitrag zum eingeschleppten Schwarzen Nutzholzborkenkäfer Xylosandrus germanus. Biologie und Schadenpotential an im Wald gelagertem Rundholz im Vergleich zu Xyloterus lineatus und Hylecoetus dermestoides | The Imported Japanese Scolytid beetle Xylosandrus germanus: Biology and Damage Potential for Stored Round Timber Compared to Xyloterus lineatus and Hylecoetus dermestoides

In 1995, significant damage caused by Xylosandrus germanus (Blandford) was reported on round timber, both with bark and decorticated, of Norway spruce and fir. The insecticides used against Xyloterus lineatus and Hylecoetus dermestoides (L.), showed an insufficient to no effect againstX. germanus. Between 1996 and 1998, the development of the populations were investigated, the effectiveness of insecticides tested and the influence of felling date, decortication and storage site investigated in correlation with the intensity of damage. The decreasing population density, the activity of the insects as well as recommendations for felling and removal of round timber are illustrated and discussed.