Response of two tephritid species, Bactrocera oleae and Ceratitis capitata, to different emission levels of pheromone and parapheromone

► An optimum pheromone release rate has been found in Bactrocer oleae ► This optimum does not exist in Ceratitis capitata parapheromone trimedlure. ► Optimum release rate of 1.28 mg/day of spiroacetal has been found for B. oleae. ► Release rate of trimedlure over 2.4 mg/day does not increase C. capitata catches. ► These findings are essential for monitoring and attract and kill techniques.