“…Cruz López et al 1995, Guerenstein and Guerin 2004, Manrique et al 2006, Rojas et al 2002, Schofield 1979a. Thus, a parsimonious use of this odorant by these insects has been proposed (Guerenstein and Guerin 2001, Guerenstein and Lazzari 2009) because it is used by triatomines as, at least, host attractant and alarm signal depending on its concentration, sensory (in particular odour blend) context and the physiological state of the perceiving bug. It should be noted that odorants tested singly are often effective only within a narrow range of concentrations (Barrozo andLazzari 2004a, Guerenstein and.…”