A T. urticae adult female was transferred onto a VOCos/ VOCwt-exposed lima bean leaf square (10610 mm) on a wet cotton-laid petri dish (90 mm diameter). Each dish containing 10 leaf squares was incubated in a climate-controlled room at 25uC with a photoperiod of 16 h, and the number of eggs laid by each female was counted every 24 hours for up to 3 days.