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Аннотация: The flight periods of bark beetles and the insect attack on pine logs, felled at intervals of 20 days from January to June, were studied by using window traps and by marking fresh entrance holes in the logs followed by autumn inspection. The periods of flight and attack had similar patterns. Blastophagus piniperda and B. minor, as well as several other bark beetle species, had relatively short periods of flight and attack, while especially Pityogenes chalcigraphus had a long flight period with less accentuated peak. Trypodendron lineatum had a flight pattern with one early and one late peak.
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