Sex Attractants in Frass Produced by Male Ips confusus in Ponderosa Pine

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Science  28 Oct 1966:
Vol. 154, Issue 3748, pp. 509-510
DOI: 10.1126/science.154.3748.509


The attractant response of Ips confusus to frass produced by male beetles boring in ponderosa pine can be reproduced, in a laboratory bioassay, by a combination of compound I with either compound II or compound III, all isolated from frass. The same response by both sexes was elicited by mixtures of synthesized compounds. Compound I is (—)-2-methyl-6- methylene7-octen-4-ol; compound II, (+)-cis- verbenol; and compound III, (+)-2-methyl-6-methylene-2,7-octadien-4-ol.