Bug Wiki
Sticker of Barn spider
Bug card No. 0098 of 1,500

Barn spider

Araneus cavaticus
Eats: Other bugs and small animalsSpidersHouses and farms8 legsNot an insect, but a bug cousin

The barn spider is a yellow and brown spider with striped legs and a big round tummy. It loves to build its round web in barns, sheds and other wooden buildings. It is the real-life spider behind Charlotte in the book Charlotte's Web.

Fun fact: spiders are not insects. Insects have six legs, spiders have eight. Everyone calls them bugs anyway!
Lives in
Canada and the United States, in barns, sheds, porches and on boats
Length
2 to 2.5 cm (0.79 to 0.98 in)
Top speed
about 1.9 km/h (1.2 mph)
On foot, estimate
What does it eat?
It catches insects in its sticky web and wraps them up in silk straight away.
For real!Photo of Barn spider
Picture by No machine-readable author provided. Abrahami assumed (based on copyright claims).. CC BY-SA 2.5, via Wikimedia Commons.

How big is it?

How long is it?

Barn spider about 2.5 cm long (0.98 in)A grain of rice about 6 mm (0.24 in)A toy building brick about 3.2 cm (1.3 in)A crayon about 9 cm (3.5 in)
as long as 4 grains of rice in a rowcould run across a dinner table in 1.9 secondsmoves 21 times its own body length every second

How big is Barn 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 Charlotte's Web, Charlotte's full name is Charlotte A. Cavatica, after the barn spider's scientific name.

2

It builds its web in the dark, at night, and then hides in a silk-lined hiding spot nearby.

3

Usually only the females build webs.

4

If you puff air at it, it may bounce up and down in its web, maybe to look bigger and scarier.

5

It can tell what has landed in its web just by feeling the silk shake.

you asked

Most asked questions about Barn spider

?Is the barn spider the spider from Charlotte's Web?

Yes. Charlotte in the book is a barn spider, and her full name comes from its scientific name.

?How big is a barn spider?

About 2 centimetres long, and big ones can grow a bit over 2.5 centimetres.

For bug experts

Scientific name
Araneus cavaticus
Group
Spiders
Family
Araneidae
Classification
Arachnida > Araneae > Araneidae
Lives on
North America

Where the facts come from

  1. Barn spider (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 No machine-readable author provided. Abrahami assumed (based on copyright claims).. CC BY-SA 2.5, 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 hello@bugwiki.app and we will fix it.

More from the same group: Spiders

Also at home here: Houses and farms