Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 99. (Budapest 2007)

Bálint, Zs., Horváth, Z. E. , Kertész, K. , Vértesy, Z. ; Biró, L. P.: Observations on scale structures and spectroscopic properties of Polyommatus lycaenid butterflies (Lepidoptera: Lycaenidae)

Figs 7-12. Male individuals of Polyommatus taxa investigated by spectroscopy, showing dorsal surfaces scanning electron micrographs showing structural blue colour generating cover scales with pepper-pot structures: 7 — P. erotides (STAUDINGER, 1892) individual, 8 — P. erotides scale, 9 — P. ariana (MOORE, 1865) individual, 10 = P. ariana scale, 11 = P. icarus (ROTTEMBURG, 1775) individual, 12 = P. icarus scale