Pheromone differences between sibling taxa Diachrysia chrysitis (Linnaeus, 
1758) and D. tutti (Kostrowicki, 1961) (Lepidoptera: Noctuidae)

Löfstedt, C.; Hansson, B. S.; Toth, M.; Szocs, G.; Buda, V.; Bengtsson, M.; Ryrholm, N.; Svensson, M.; Priesner, E.

doi:10.1007/bf02065993

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Pheromone differences between sibling taxa Diachrysia chrysitis (Linnaeus, 1758) and D. tutti (Kostrowicki, 1961) (Lepidoptera: Noctuidae)

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Löfstedt, C., Hansson, B. S., Toth, M., Szocs, G., Buda, V., Bengtsson, M., et al. (1994). Pheromone differences between sibling taxa Diachrysia chrysitis (Linnaeus, 1758) and D. tutti (Kostrowicki, 1961) (Lepidoptera: Noctuidae). Journal of Chemical Ecology, 20(1), 91-109. doi:10.1007/bf02065993.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0014-5E26-C

Abstract

The noctuid sibling taxa Diachrysia chrpsitis s. str. and D. tutti, of yet uncertain taxonomic status, have previously been shown to possess differences in morphology and to be attracted to different mixtures of the two presumed pheromone components (Z)-5-decenyl acetate and (Z)-7-decenyl acetate. Typical D. tutti males (clearly broken forewing marking) are known to respond to a 2:100 mixture of the two isomers, whereas D. chrysitis males (unbroken marking) are attracted to a 100:10 mixture. We investigated female pheromone production and male electroantennographic (EAG) response in Diachrysia families raised in the laboratory from held-collected gravid females. Extracts of individual females from typical D. tutti and D. chrysitis families were subjected to gas chromatography with simultaneous flame ionization and electroantennographic detection. All females produced mixtures of Z5- and Z7-10:OAc, but female D. chrysitis produced predominantly Z5-10:OAc