Pityogenes bidentatus

Beetles are 1.8-2.5 mm long. It has two generations per year. Adults of the first generation fly in May-June, and those of the second generation in July-August. The male bores nuptial chambers, where 3 up to 7 females are attracted. Females seek out galleries steeply cut into the surface of wood. In wood is also visible the nuptial chamber. Egg galleries usually branch out from the nuptial chamber forming a star-shape pattern. An outbreak can appear after windbreaks and then it can also severely damage young pine trees and treetops of older ones. It attacks pines with thinner bark, tree trunks in younger stands, twigs and treetops in older ones.