Influence of moisture, diameter and bark thickness of traps on the emergence behaviour of Chaetoptelius vestitus (Insecta, Coleoptera, Scolytidae) ANTONIOS P. FRAGOULIS Department of Zoology, School of Biology, Aristotle University, 541 24 Thessaloniki, Greece   Abstract This paper concerns the influence of inside moisture, diameter and bark thickness of traps (cut branches from the tree Pistacia vera L.) on the emergence and dispersal flight of the new adult bark insects of Chaetoptelius vestitus. Data showed that there is a difference in the time of emergence and flight of the new adults among traps of different inside moisture, diameter and bark thickness.   < back .