In response to T. urticae infestation, the second receiver plants that had been placed 30 cm apart from the infested VOCos- receiver plants for 1 day were more attractive to P. persimilis, in comparison to those that had been placed near the infested VOCwt-receiver plants (P,0.05, binomial test; Figure 6). How- ever, when the second receiver plants had been kept with the infested VOCos-receiver plants for 1 week, P. persimilis was less attracted