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Living jewels  E-mail
Beetles are sometimes called "living jewels" in reference to the diverse array of iridescent colours they display. The optical effects are produced by photonic crystals and sophisticated reflectance mechanisms, as these images show. (Images from Journal of the Royal Society Interface, DOI: 10.1098/rsif.2008.0354.focus; provided by Ainsley Seago)

This picture shows a predatory tiger beetle

Living jewels
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