(442.99 KB, 1600x2000)
(482.08 KB, 1600x2000)
(246.73 KB, 400x500)
>>/1115/ > Pls post photos of the beetle with a polarizer! Sorry that took a while. Here's a ded specimen of the common green rose chafer Cetonia aurata in sunlight and through a right circular polarizer filter. The iridescent green reflected from the beetle's carapace is a structural color and entirely left-polarized light due to the molecular structure of its chitin cuticula. Those beetles are the only objects in nature known to do this. Why - we just don't know. Most of those beetle species don't seem to react to polarized light. Only some South American beetles maybe do. https://pubmed.ncbi.nlm.nih.gov/16564066/ https://pubmed.ncbi.nlm.nih.gov/22155007/ https://pubmed.ncbi.nlm.nih.gov/20302426/