Beetle Elytra — Jewel Beetle Iridescence at 4:1
369.00 $
A jewel beetle (Buprestidae) elytra photographed at 4:1 macro — the sculptured surface showing the pit-row pattern that is both structural and iridescent, the multilayer interference of the cuticle producing vivid green and gold structural colour.
Description
Jewel beetles (Buprestidae) produce the most brilliant structural colour in the insect world through a multilayer thin-film interference system in the exocuticle — alternating layers of high and low refractive index materials whose combined optical thickness is tuned to reflect specific wavelengths. At 4:1 macro, the elytra surface structure is fully resolved: the characteristic pit rows that run longitudinally along the elytra surface create a regular texture whose geometric regularity contributes to the coherence of the reflected light. The structural colour shifts across the elytra surface as the surface normal direction changes — areas facing the light source appear as vivid emerald green, while areas at steeper viewing angles shift toward gold. The pit interiors show a different colour than the pit ridges due to the different angle of the multilayer stack relative to the incident light.
