“…For many insects these hydrocarbons serve additional roles including contact sex pheromones and species, caste and nestmate recognition cues Blomquist et al, 1987;Espelie et al, 1991;Howard, 1993). Cuticular hydrocarbons have been shown to be important components in the process of nestmate recognition for ants, honey bees and termites Brill et al, 1986;Bonavita-Cougourdan et al, 1987;Vander Meer et al, 1989a;Getz and Page, 1991;Breed and Julian, 1992). Additional evidence that these surface hydrocarbons play an important role in nestmate recognition is provided by the fact that several heterospecific insects that are able to integrate into social insect colonies have cuffcular hydrocarbon profiles that are congruent with those of their hosts (Howard et al, 1980(Howard et al, , 1990Vander Meer and Wojcik, 1982;Espelie and Hermann, 1988;Vander Meer et al, 1989b).…”