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Sticker of Lace-webbed spider
Bug card No. 0818 of 1,500

Lace-webbed spider

Amaurobius similis
Name means: “similis means similar, because it looks very much like its cousin Amaurobius fenestralis”
Eats: Other bugs and small animalsSpidersHouses and farms8 legsNot an insect, but a bug cousin

The lace-webbed spider is a dark reddish brown spider that lives in and around houses. On its back it has a dark wedge shaped mark with a yellow edge. It spins a lacy web in holes in walls, fences and window frames.

Fun fact: spiders are not insects. Insects have six legs, spiders have eight. Everyone calls them bugs anyway!
Lives in
Europe and the Caucasus, and now North America, mostly on and around buildings
Length
0.6 to 1.2 cm (0.24 to 0.47 in)
females are bigger than males
Top speed
about 1.3 km/h (0.81 mph)
On foot, estimate
What does it eat?
It catches insects that get tangled in its lacy web.
For real!Photo of Lace-webbed spider
Picture by AJC1. CC BY-SA 2.0, via Wikimedia Commons.

How big is it?

How long is it?

Lace-webbed 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 Lace-webbed spider compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

It has a look-alike cousin. Scientists need a microscope to tell the two apart for sure.

2

It is often found near windows.

3

Its legs have darker rings on them.

4

Away from houses, it sometimes lives under tree bark in the woods.

you asked

Most asked questions about Lace-webbed spider

?Where do lace-webbed spiders live?

In holes in walls, fences and window frames, mostly around houses.

?How big is a lace-webbed spider?

Females are about 9 to 12 millimetres long and males are a bit smaller.

For bug experts

Scientific name
Amaurobius similis
Group
Spiders
Family
Amaurobiidae
Classification
Arachnida > Araneae > Amaurobiidae
Lives on
Europe, Asia, North America

Where the facts come from

  1. Amaurobius similis (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 AJC1. CC BY-SA 2.0, 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: Houses and farms