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Sticker of Giant Fijian longhorn beetle
Bug card No. 0570 of 1,500

Giant Fijian longhorn beetle

Xixuthrus heros
Eats: WoodBeetlesRainforests and jungles6 legs

The giant Fijian longhorn beetle is one of the biggest insects alive today. Its body alone can be about 15 centimetres long, as long as a pencil. It lives in the rainforests of one island in Fiji, and it has very strong jaws.

Lives in
Only the island of Viti Levu in Fiji, in lowland rainforest
Length
15 cm (5.9 in)
Top speed
about 0.98 km/h (0.61 mph)
On foot, estimate
Can it hurt you?
Can bite or sting
It has powerful jaws that can give a strong pinch, so it is best not to pick it up. When scared it hisses loudly.
What does it eat?
Its babies grow up inside the rotting wood of very big old trees and eat it.
For real!Photo of Giant Fijian longhorn beetle
Picture by KarlM at English Wikipedia. CC BY-SA 3.0, via Wikimedia Commons.

How big is it?

How long is it?

Giant Fijian longhorn beetle about 15 cm long (5.9 in)A crayon about 9 cm (3.5 in)A banana about 18 cm (7.1 in)A house cat about 50 cm (20 in)
as long as 5 toy building bricks in a rowabout as long as your handcould run across a dinner table in 3.7 seconds

How big is Giant Fijian longhorn beetle compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

When it feels threatened, it makes a loud hiss by squeezing air out from under its wing cases.

2

It is active at night and flies long distances to find a partner and good trees.

3

Its babies need huge trees at least 80 centimetres thick, and such trees are very rare.

4

It is rare and endangered, because its forests are being cut down.

5

In 2001 scientists found that what they thought was one kind of beetle was really two different kinds.

you asked

Most asked questions about Giant Fijian longhorn beetle

?How big is the giant Fijian longhorn beetle?

Its body is about 15 centimetres long, not counting its legs and long feelers.

?Is the giant Fijian longhorn beetle dangerous?

It is not venomous, but its strong jaws can pinch hard, so leave it alone.

?Why is the giant Fijian longhorn beetle endangered?

The big old trees it needs are being cut down, and storms and other animals also harm it.

For bug experts

Scientific name
Xixuthrus heros
Group
Beetles
Family
Cerambycidae
Classification
Insecta > Coleoptera > Cerambycidae
Lives on
Australia and Oceania
Also known as
Giant Fijian long-horned beetle

Where the facts come from

  1. Giant Fijian long-horned beetle (Wikipedia, CC BY-SA 4.0): what it looks like, where it lives, what it eats, sizes and fun facts, retold in simple words.
  2. Picture by KarlM at English Wikipedia. CC BY-SA 3.0, Wikimedia Commons. The round sticker of this bug is cut from the same picture.

If we got something wrong, sorry, we are bug fans, not a science journal. Tell us at [email protected] and we will fix it.

More from the same group: Beetles

Also at home here: Rainforests and jungles