Interactive Bugs

The Borneo rainforest · Beetles

Jewel beetle

Chrysochroa

A slim, bullet-shaped beetle of dazzling metallic green, with a red-copper stripe down each wing case.

Size
3 to 5cm long
Look for it
All year round
Where
Forests of South-East Asia

My spotter's list

Scurries after you, then takes off with a flash. Move your pointer and see.

When to look

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Jewel beetle

Good to know

Six things about the jewel beetle

Shine

Shining like metal

Its colour comes from layers in its shell that bend the light, so it never fades, even after the beetle dies.

Art

Used as jewels

The wing cases of jewel beetles have been used in jewellery and decoration for centuries. A shrine in Japan made about 1,300 years ago is covered with thousands of them.

Sun

A lover of sunshine

It flies in the hottest part of the day, high round the tops of trees.

Hide

Hidden by its shine

Oddly, the glitter works as camouflage: among sunlit, glossy leaves it is very hard to pick out.

Grub

Years in the wood

The grub bores into dead and dying wood, and takes several years to grow up.

Shape

Built like a bullet

Its smooth, tapering shape lets it take off in an instant.

The real thing

Photos of the jewel beetle

Jewel beetle, photo 1
Photo: Ramesh Shenai Jr., CC BY 4.0, Wikimedia Commons
Jewel beetle, photo 2
Photo: Ramesh Shenai Jr., CC BY 4.0, Wikimedia Commons
Jewel beetle, photo 3
Photo: Didier Descouens, CC BY-SA 4.0, Wikimedia Commons

Photos are from Wikimedia Commons, used under the free licences shown. They have been resized, and cropped where they appear in link previews.

Out and about

How to spot one

On a hot, sunny day, watch the tops of trees at a woodland edge for green sparks circling in the sun.

Lend a hand

How to help

It needs old and dying trees for its grubs. Leaving dead wood standing helps.

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