Metamorphosis: Blowflies and dazzling disguise
Discovery 
About this episode
<p>Blowflies may be some of the most reviled insects on the planet, but as Erica McAlister discovers, they are central to the surprisingly long tradition of forensic entomology and how there's more than meets the eye in the distinctive structural colour of the morpho butterfly wing, whose dazzling sheen is a key for camouflage and commerce.</p><p>(Photo: A fly on a leaf. Credit: Christina Bollen/Getty Images)</p>
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