The amount of the binary blend loaded onto red rubber septa significantly affected the number of T. atristriga captured (Treatment, F2,12 = 28.9, P < 0.01) (Figure ). Increasing the dose from 0.1 to l mg resulted in a significant increase in the number of males caught (P < 0.01). Furthermore, increasing the dose to 10 mg resulted in a significant reduction in the number of males caught, compared with the 1-mg dose (Figure ).