Ips cembrae is the most important bark beetle pest of larches and has had several local outbreaks in recent decades in Europe. In this study, we compared the numbers of I. cembrae captured by pyramid-trap piles, trap trees, pheromone traps, and poisoned and baited tripods. We also studied how the properties of trap trees and trap logs (volume, sun exposure, and position relative to the ground once deployed) affected the trapping of I. cembrae. We found that both sexes avoided infestation at the bottom of the logs and more than 15 times the number of beetles were captured by traditional trap trees than by pheromone traps or baited and insecticide-treated tripods. The number of I. cembrae per trap tree did not decrease with trap volume; therefore, it is appropriate to use traps of small dimensions. Baited tripods, pyramid-trap piles, and pheromone traps could be useful for detection of the beginning of flight activity, but trap trees are the most useful for reducing I. cembrae numbers.

中文翻译：

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Ips cembrae（鞘翅目：Curculionidae）捕获方法的比较：捕获最多的甲虫的小型陷阱树

Ips cembrae是最重要的幼虫树皮甲虫，近几十年来在欧洲发生了几次局部暴发。在这项研究中，我们比较了金字塔陷阱桩，陷阱树，信息素陷阱以及有毒和诱饵的三脚架捕获的I. cembrae的数量。我们还研究了圈套树和圈套原木的性质（体积，日光照射和部署后相对于地面的位置）如何影响I. cembrae的圈套。我们发现，两性避免了原木底部的侵扰，并且传统的陷阱树捕获的甲虫数量是信息素陷阱或诱饵和经杀虫剂处理的三脚架捕获的甲虫数量的15倍以上。I. cembrae的数量每个陷阱树都没有随着陷阱数量的减少而减少；因此，使用小尺寸的疏水阀是合适的。诱饵的三脚架，金字塔形陷阱桩和信息素陷阱可用于检测飞行活动的开始，但是陷阱树对于减少I. cembrae数最有用。