Figure 1.

Structurally coloured scales from fossil (a–d) and modern (e–h) Hypera diversipunctata. (a,e) Light micrographs of the fossil specimen (an isolated elytron) (a) and of a complete modern specimen (e). (b–d, f–h) Light micrographs of fossil (b–d) and modern (f–h) scales showing bifurcate morphology and domains of different hues. Arrow in (g) indicates seta with multi-hued domains. Images in (d) and (h) were obtained under identical lighting conditions. Scale bars, (a,e) 2 mm; (b,d) 50 µm; (c,f–h) 25 µm. (Online version in colour.)