Flight activity of the spruce bark beetle Ips typographus in Southern Sweden

The outbreak of Ips typographus after the storm in January 2005 that felled ca 75 million m 3 in southern Sweden is now in its 4th year.So far ca 3 million m 3 of spruce forest have been killed.Since 2005 we have been studying flight activity and development of Ips typographus at two research stations in southern Sweden, Asa and Tönnersjöheden which are located in the storm-felling area.In spring 2005, four window traps were placed in a storm-felled spot with remaining wind-falls and four other traps in a shaded position at the nearby stand edge at both study sites.The traps were baited with pheromones and fresh logs and were emptied weekly from April through September.The traps remained at the same sites in all years, and new logs were added each spring.The catches contain many beetle species but here only the spruce bark beetle is discussed.