Platinum Beetle
Chrysina limbata
Chirality and Light
Their shine is a result of circularly polarized light. The beetle’s shell is made of microscopic layers that only reflect light spinning in a specific direction (left-handed), a phenomenon almost unique to the Chrysina genus.
A Living Mirror
The Platinum Beetle reflects light across almost the whole visible range, which is why it looks like polished metal. This makes it one of the most reflective biological surfaces on Earth, rivaling man-made mirrors.
The "Invisibility" Paradox
You might think a silver beetle would stand out, but in the dappled light of the rainforest, they act as mirrors of their surroundings. By reflecting the green leaves and brown bark around them, they become chameleons.
Field notes
| Range | Central America |
|---|---|
| Lifespan | 1 to 2 years |
| Size | 25 mm to 35 mm |
| Weight | Approximately 1.5 g to 2.0 g |
| Colour | Polished Silver/Platinum |
| Diet | Herbivorous |
| Family | A member of the Scarabaeidae family (Jewel Scarabs) |
In the book
The Platinum Beetle is number 97 of the 101 creatures in Glowing Bugs. Its two pages show it from three sides, at its true size, with a map of where it lives. The plate is an artistic interpretation and does not show the true colours of the living animal.
