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Figure 1 | Zoological Letters

Figure 1

From: Combined pigmentary and structural effects tune wing scale coloration to color vision in the swallowtail butterfly Papilio xuthus

Figure 1

Wing coloration of Papilio xuthus. A, B Dorsal and ventral view of a spring form female. The numbers refer to the wing areas from where scales were taken (scale bar: 2 cm). C Reflectance spectra measured with a microspectrophotometer from single scales in situ of the numbered areas of A and B. D Absorbance spectra of scales embedded in immersion oil; c: a cream scale (from area 1); o: orange scale (area 2); k: black scale (area 3), b: blue scale (area 4); scales of area 5 are not included (scale bar: 20 μm). The thin curves are from small measurement areas (15 × 15 μm2) near the tip and middle parts of a few different scales. The bold curves represent the averaged spectra (of 4, except for the black: 2). The deep-yellow curves are from cream-colored (c) scales on the dorsal hindwing, from area 1, and the yellow spectra are from pale-cream-colored (p) scales located on the ventral hindwing, opposite to the dorsal area 1.

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