The effect of different aggregation pheromones on attraction ofCarpophilus hemipterus(L.),C. mutilatusErichson, andC. humeralis(F.) was demonstrated in olfactometer and field trials in Israel. Aggregation pheromones act as synergists to attractCarpophilusspp. to host volatiles. Captures in traps baited with the pheromone–host volatiles combinations were higher than in traps baited with host volatiles alone.Carpophilusspp. aggregation pheromones are not entirely species-specific, and pheromones belonging to one species may also enhance attraction of other species. This cross-attraction is not surprising because congeners do have pheromone components in common. Thus, pheromones ofC. lugubrisMurray andC. freemaniDobson enhanced attraction ofC. hemipterusto host volatiles, whereasC. humeralisattraction to host volatiles was enhanced by the pheromones ofC. hemipterusandC. lugubris.C. mutilatusexhibited a high degree of activity to its own pheromone. Aggregation pheromones ofCarpophilusspp. do not have any effect onHaptoncus luteolus(Erichson). The possibility of using host volatiles–pheromone combinations for monitoring and perhaps even for control of these pests (by mass-trapping or disruption of egg laying and mating) appears very promising.