Abstract
A female-produced sex pheromone ofSyndipnus rubiginosus Walley (Hymenoptera: Ichneumonidae), a parasitoid of the yellowheaded spruce sawfly,Pikonema alaskensis (Rohwer) (Hymenoptera: Tenthredinidae), was isolated and identified from hexane extracts of 250 virgin females. Column chromatography (Florisil), gas chromatography, mass spectrometry, high performance liquid chromatography, and ozonolysis indicated the structure was ethyl (Z)-9-hexadecenoate. The optimum male response is at 300–1000 ng (3–10FE). No cross-attraction betweenS. rubiginosus and the sympatric sawfly parasitoidS. gaspesianus (Provancher) could be demonstrated.
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Hymenoptera: Ichneumonidae.
Paper No. 13,232 Scientific Journal Series, Minn. Agric. Exp. Stn., St. Paul, Minnesota 55108. Research supported by C.K. Blandin Foundation of Grand Rapids, Minnesota.
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Eller, F.J., Bartelt, R.J., Jones, R.L. et al. Ethyl (Z)-9-hexadecenoate a sex pheromone ofSyndipnus rubiginosus, a sawfly parasitoid. J Chem Ecol 10, 291–300 (1984). https://doi.org/10.1007/BF00987857
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DOI: https://doi.org/10.1007/BF00987857