Mating success in different types of crosses between the E and Z strains from France in the presence – in a separate compartment communicating <i>via</i> a grid – <i>vs.</i> in the absence of either a rubber septum loaded with synthetic pheromone or two virgin females belonging to the same strain a

aCross types are described as female×male. bWithin each cross type, only percentages followed by a different letter were significantly different from each other (Fisher's exact test, p<0.05).