Abstract: Aphid sex pheromone is released from oviparae of female aphid from their hind tibiae and received by male aphid's secondary rhinaria on their antennae. A number of aphid sex pheromones comprised of a synergistic mixture of the monoterpenoids (-)-(1R, 4aS, 7S, 7aR)nepetalactol and (+)-(4aS, 7S, 7aR)nepetalactone in different ratios. This paper reviews the aphid sex pheromone work. The following aspects are included: (1) the composition of aphid sex pheromone. (2) secretion and aception of aphid sex pheromone. (3) the role of aphid sex pheromone in aphid species isolation.

Key words: aphid sex pheromone, nepetalactol, neptalactone, reproductive isolation