Female sex pheromone components of the box tree pyralid, Glyphodes perspectalis, in Korea: Field test and development of film-type lure

• Z11-16Ald and E11-16Ald were identified as female sex pheromone of G. perspectalis.
• The most effective ratios of Z11-16Ald to E11-16Ald were 5:1 and 7:1 in field test.
• A uni-trap was found to be more effective than delta and wing traps.
• Photo-setting resin showed potential as a pheromone releasing device.

The box tree pyralid, Glyphodes perspectalis, is the most destructive pest of the box tree in Korea and was recently introduced into Europe. The previously known as EAG active components of this moth, (Z)-11-hexadecenal (Z11-16:Ald), (E)-11-hexadecenal (E11-16:Ald), and (Z)-11-hexadecenol (Z11-16:OH) have been detected from the extracts of female abdomen. The ratios of these three compounds identified in female moth were 5.2:1:0.2 in 2010 and 6.5:1:0.2 in 2011. During field bioassays, it was found that the male moths were not attracted to Z11-16:Ald or E11-16:Ald when used alone; however, they were attracted to a mixture of the above. The most effective ratios of Z11-16:Ald to E11-16:Ald were 5:1 and 7:1. A small amount of Z11-16:OH inhibited male moth attraction in field bioassays. Further, a uni-trap was found to be more effective in catching the moth than delta and wing traps were. In field bioassays using 2 different types of lures, significantly more male G. perspectalis were caught to film-type lures (50.5 ± 4.4/trap) than those to rubber septum lures (35.8 ± 5.2/trap).

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