In this study,spherical traps were used to attract and kill the Chinese citrus fly,Bactrocera minax.The control efficiency of the traps was estimated under various factors,including different experimental location,citrus variety,suspension density and suspension time.Results revealed that the flies could be attracted and killed by the spherical traps in different citrus orchards and the control efficiency in naval orange orchards and mandarin orange orchards reached 97.5% and 100%,respectively.In addition,the control efficiency was closely associated with the appropriate suspension density and proper time.It is suggested that the optimum time for the control of B. minax adults by the spherical traps was from middle May to early June.According to the density and luxuriant level of citrus trees,we advised that 15 traps be suspended per 666.7 m2 of land.In conclusion,the spherical trap not only can monitor the population dynamic of B. minax in the field,but also can control this serious insect pest effectively.