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Sticker of Money spider
Bug card No. 0935 of 1,500

Money spider

Erigone atra
Eats: Other bugs and small animalsSpidersGardens and meadows8 legsNot an insect, but a bug cousin

The money spider is a tiny black spider, only about 2 millimetres long. It lives in grassy fields and meadows. Its special trick is flying: it lets out a silk thread and floats away on the wind like a little kite.

Fun fact: spiders are not insects. Insects have six legs, spiders have eight. Everyone calls them bugs anyway!
Lives in
North America, Europe and across Asia to Japan, most of all in Western Europe
Length
1.8 to 2.8 mm (0.07 to 0.11 in)
Top speed
about 0.63 km/h (0.39 mph)
On foot, estimate
What does it eat?
It catches tiny animals, including aphids that harm farmers' crops.
For real!Photo of Money spider
Picture by Michael Hohner ( Mhohner ). CC BY 3.0, via Wikimedia Commons.

How big is it?

How long is it?

Money spider about 2.8 mm long (0.11 in)A grain of rice about 6 mm (0.24 in)
2 of them in a row are as long as one grain of ricecould run across a dinner table in 5.7 secondsmoves 63 times its own body length every second

How big is Money spider compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

Flying on silk threads is called ballooning, and it lets the spider travel very far to find a new home.

2

It is a helper for farmers, because it eats aphids on crops.

3

It has eight eyes in two rows of four.

4

It is one of the most common spiders of its kind, but it looks so much like its cousins that it is hard to tell them apart.

5

In winter it moves to taller plants, where it is better hidden and warmer.

you asked

Most asked questions about Money spider

?How does a money spider fly?

It lets out a long silk thread that catches the wind and carries it through the air.

?How big is a money spider?

Only about 2 to 3 millimetres long, smaller than a grain of rice.

For bug experts

Scientific name
Erigone atra
Named by
Blackwall, 1833
Group
Spiders
Family
Linyphiidae
Classification
Arachnida > Araneae > Linyphiidae
Lives on
North America, Europe, Asia
Also known as
Dwarf spider

Where the facts come from

  1. Erigone atra (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 Michael Hohner ( Mhohner ). CC BY 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: Spiders

Also at home here: Gardens and meadows