Responses of adult Thrips palmi to volatiles produced by 50 adult males or females of the same species in a Y-tube olfactometer.

aAll test and source insects were adults. Virgin females were 1–3 d post-emergence. Other adults were of mixed age.bAll odour sources consisted of 50 live adults of mixed age.cThe percentage of individual thrips that chose the odour side out of the total that made a choice.dExact probability based on null hypothesis of equal preference for the two sides.