“…Behavioural evidence suggests that parasitoids possess similar abilities to detect and distinguish different olfactory stimuli from plants (e.g. Thorpe & Caudle, 1938;Monteith, 1955Monteith, , 1966Arthur, 1962;Read et al, 1970;Schuster & Starks, 1974;Nettles, 1979Nettles, , 1980Elzen etal., 1983Elzen etal., , 1984aElzen etal., , b, 1986Elzen etal., , 1987, as well as volatile chemical stimuli from other host microhabitats (e.g. Thorpe & Jones, 1937;Vet, 1983Vet, , 1985Vet & van Opzeeland, 1984.…”