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Sticker of Fencepost jumping spider
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Fencepost jumping spider

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

The fencepost jumping spider is a flat, furry, grey-brown spider. Like all jumping spiders, it does not catch food in a web. It sneaks up on insects and pounces on them.

Fun fact: spiders are not insects. Insects have six legs, spiders have eight. Everyone calls them bugs anyway!
Lives in
Europe and Asia, and now also south-west Canada, on tree bark, fences and walls
Length
0.6 to 1.4 cm (0.24 to 0.55 in)
Top speed
about 1.2 km/h (0.75 mph)
On foot, estimate
What does it eat?
It hunts small insects by creeping up and jumping on them.
For real!Photo of Fencepost jumping spider
Picture by Luc Viatour. CC BY-SA 3.0, via Wikimedia Commons.

How big is it?

How long is it?

Fencepost jumping spider about 1.4 cm long (0.55 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 2.5 grains of rice in a rowcould run across a dinner table in 3 secondsmoves 24 times its own body length every second

How big is Fencepost jumping spider compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

It builds a little nest under the bark of dead trees. Up to 100 nests can sit side by side.

2

When two spiders meet, the weaker one lifts its front legs and slowly backs away to show it gives up.

3

Scientists found that what happens to a young spider shapes its personality.

4

Its flat body is perfect for squeezing into cracks under bark.

you asked

Most asked questions about Fencepost jumping spider

?How big is the fencepost jumping spider?

Females are about 7,5 to 14 mm long, males about 6 to 8 mm.

?Where can I find a fencepost jumping spider?

On tree bark, wooden fences and walls of buildings, especially on pine and spruce trees.

For bug experts

Scientific name
Marpissa muscosa
Group
Spiders
Family
Salticidae
Classification
Arachnida > Araneae > Salticidae
Lives on
Europe, Asia, North America

Where the facts come from

  1. Marpissa muscosa (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 Luc Viatour. 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 hello@bugwiki.app and we will fix it.

More from the same group: Spiders

Also at home here: Gardens and meadows