 By chewing on plant tissues, the rose chafer induces the release of volatile compounds from the plant.Using their antennae, rose chafers can detect the plant compounds in the air and orient themselves in the direction of the feeding conspecific, leading to an aggregation of the beetles.Male rose chafers also orient themselves preferentially toward virgin females as opposed to mated females, though it is unknown whether they are detecting pheromones released by virgin females, or the release of plant volatiles induced by the feeding virgin females.