we have uploaded to our homepage      http://www.nanotechnology.hu our new paper entitled Zs. Bálint, K. Kertész, G. Piszter, Z. Vértesy, and L. P. Biró: THE WELL-TUNED BLUES: THE ROLE OF STRUCTURAL COLOURS AS OPTICAL SIGNALS IN THE SPECIES RECOGNITION OF A LOCAL BUTTERFLY FAUNA (LEPIDOPTERA: LYCAENIDAE: POLYOMMATINAE); J.R.Soc.Interface 9, 1745(2012)