Bug Wiki
Sticker of Northern jewelled spider
Bug card No. 3033 of 4,939

Northern jewelled spider

Gasteracantha fornicata
Eats: Other bugs and small animalsSpidersRainforests and jungles8 legsNot an insect, but a bug cousin

The northern jewelled spider is a small spider with a hard, spiny back that looks like a little jewel. The female has bold yellow or white stripes across her dark body. She sits in the middle of her round web and waits for insects to come close.

Fun fact: spiders are not insects. Insects have six legs, spiders have eight. Everyone calls them bugs anyway!
Lives in
Rainforests of north-eastern Australia, in Queensland
Length
0.2 to 1.2 cm (0.08 to 0.47 in)
Top speed
about 1.3 km/h (0.81 mph)
On foot, estimate
What does it eat?
It catches small flies, bees, moths, grasshoppers and dragonflies in its web.
For real!Photo of Northern jewelled spider
Picture by Amos T Fairchild. CC BY-SA 3.0, via Wikimedia Commons.

How big is it?

How long is it?

Northern jewelled spider about 1.2 cm long (0.47 in)A grain of rice about 6 mm (0.24 in)A toy building brick about 3.2 cm (1.3 in)
as long as 2 grains of rice in a rowcould run across a dinner table in 2.8 secondsmoves 30 times its own body length every second

How big is Northern jewelled spider compared to YOU?

Just maths in your browser. Nothing is saved or sent anywhere.

How fast is it?

cool stuff

Fun facts

1

In 1775 it became the very first Australian spider to get a scientific name.

2

Its bright stripes attract insects. To a bee, the white-striped spiders look just like flowers.

3

Females can be up to 12 millimetres long, but males are only about 2 millimetres.

4

The spines on its hard back help protect it from animals that might eat it.

5

It decorates its round web with little tufts of silk.

you asked

Most asked questions about Northern jewelled spider

?Why does the jewelled spider have stripes?

Its bright stripes help attract insects to its web, and may warn predators that it is not a good meal.

For bug experts

Scientific name
Gasteracantha fornicata
Named by
Fabricius, 1775
Group
Spiders
Family
Araneidae
Classification
Arachnida > Araneae > Araneidae
Lives on
Australia and Oceania

Where the facts come from

  1. Gasteracantha fornicata (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 Amos T Fairchild. CC BY-SA 3.0, Wikimedia Commons. The sticker of this bug is drawn from this 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.

Bug Wiki honey jar For grown-ups: Bug Wiki is free, with no ads and no tracking. A small tip helps keep it online.Leave a tip

More from the same group: Spiders

Also at home here: Rainforests and jungles

Honey jarfor grown-ups