“…For many aphid species, sex pheromones were identified as a mixture of two monoterpenes, (+)-(4aS,7S,7aR)-nepetalactone and (-)-(1R,4aS,7S, 7aR)-nepetalactol (Table 1), in ratios that vary according to the species (Pickett et al, 1992). These volatile compounds have been shown to attract female parasitoids in the field (Hardie et al, 1991(Hardie et al, , 1994) and elicit oriented flights by A. ervi and Aphidius eadyi Starý females when they are added to a piece of filter paper next to V. faba plants in the lab (Glinwood et al, 1999). Other examples of attraction to aphid sex pheromones include the parasitoids Praon volucre (Haliday) (Hymenoptera: Aphidiidae) and D. rapae (Gabrys et al, 1997), and the predators Chrysopa cognata McLachlan (Neuroptera: Chrysopidae) (Boo et al, 1998), and Chrysopa oculata Say (Neuroptera: Chrysopidae) .…”