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To identify odors attracting <jats:italic>Medetera signaticornis,<\/jats:italic> a species in Europe, headspace samples were collected at several time-points through different stages of <jats:italic>I. typographus<\/jats:italic> attacks on logs of Norway spruce (<jats:italic>Picea abies<\/jats:italic>). The headspace samples were analyzed using combined gas chromatography and mass spectrometry (GC\u2013MS), and gas chromatography coupled with electroantennographic detection (GC-EAD) to determine compounds that stimulate <jats:italic>M. signaticornis<\/jats:italic> antennae. Antennae of <jats:italic>M. signaticornis<\/jats:italic> males and females were found to detect (\u2013)-<jats:italic>cis<\/jats:italic>-verbenol, (\u2009+)-<jats:italic>trans<\/jats:italic>-verbenol and myrtenol, which are known to be produced by bark beetles. Antennal responses were also observed for verbenene, isoterpinolene, \u03b1-pinene oxide, camphor, pinocamphone, terpinene-4-ol, myrtenal, borneol, \u03b1-terpineol, geranyl acetone, and verbenone, which are primarily produced by microorganisms, and \u03b1-pinene, \u03b1-fenchene, \u03b2-pinene, camphene, 3-carene, limonene, \u03b3-terpinene, and terpinolene, known spruce tree compounds. In field experiments testing two synthetic blends containing 18 antennal active and two additional compounds 2-methyl-3-buten-2-ol and ipsdienol we observed significant attraction of <jats:italic>M. signaticornis<\/jats:italic> within 24\u00a0h. These attractive blends can form the basis for development of <jats:italic>Medetera<\/jats:italic> monitoring lures for use in future forest and pest management.<\/jats:p>","DOI":"10.1007\/s10886-023-01405-6","type":"journal-article","created":{"date-parts":[[2023,1,31]],"date-time":"2023-01-31T03:50:16Z","timestamp":1675137016000},"page":"451-464","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Odors Attracting the Long-Legged Predator Medetera signaticornis Loew to Ips typographus L. 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