The experiment was carried out in 2012 on the plots in the High Tatra National Park (TANAP) – district Tatranská Javorina where the population density of European spruce bark beetle Ips typographus L. (Coleoptera: Curculionidae, Scolytinae) has reached epidemic level. In total 40 traps of four different types were used to observe the swarming dynamic of I. typographus and effectiveness of differently placed pheromone traps (outer traps, traps in the middle of the line). Results showed that beetles had produced two generation per year. Lindgren funnel trap and our prototype LOS trap were identified as the most effective pheromone traps for capturing I. typographus. The hypothesis that the number of beetles captured in traps placed on the outer side of the trap line will be higher wasn't confirmed.