Fig. 2
From: Coloration principles of the Great purple emperor butterfly (Sasakia charonda)
Electron micrographs of various wing scales. a-c Blue scales. d-f White scales. g-i Orange-yellow scales. j-l Red scales. m-o Brown scales. a-o Dorsal wing scales. p-r Greenish ventral wing scales. Left and middle columns: scanning electron microscopy (p and q left half: from the abwing side; right half: from the adwing side), right-hand column: transmission electron microscopy; scale bars: 20 μm (left column), 2 μm (middle and right columns). The numbers 1–6 in a, d, g, j, m, and p correspond to the numbered areas in Fig. 1b, e