This work is linked to the thesis statement, in which we dealt with spruce bark beetle bionomics. Guest Bionomics we expanded on the practical analysis of the impact of weather, air temperature and bark temperature on the spatiotemporal spread of spruce bark beetle in mountain forests. Spruce bark beetle has long been considered the most important biotic pest of spruce stands on the Slovak and in recent years. Damage achieved extraordinary dimension. Changing climatic conditions, particularly temperature increases rainfall deficit accelerate its phenological development with what is directly related to number of generations in the course of subsequent extent of damage to spruce stands. The aim of this work is to summarize existing knowledge about climate contingent during the development stages of the spruce bark beetle Compare theoretical course of phenological development of real condition monitoring of high mountain forests Belianske Tatras. The time course of theoretical developmental stages we modeled according to the temperature of the air temperature under the bark measured at the study sites. Real state was evaluated by regular peeling bark to refute a trap close to the measuring devices and also on the basis of capture in pheromone traps. The spatial spread of bark beetles we measured on the basis of the area of damage from aerial photographs from different time periodsWe found that bark beetle had in 2016 two generations of fvd 6 on two generations of fvd 7. A significant difference was found between the evolution of the population in stand-up stands to refute unprocessed bark beetle spread-out was recorded unmixed spruce stands.The surprising finding is that it is an active and even bark beetle on the forest line, the trend continued at high temperature means high risk for until now intact spruce stand.