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Sticker of Woodlouse spider
Bug card No. 1477 of 1,500

Woodlouse spider

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

The woodlouse spider has an orange-red front and legs and a shiny pale back end. It has only six eyes and really big jaws for its size. It hunts at night and its favourite food is woodlice.

Fun fact: spiders are not insects. Insects have six legs, spiders have eight. Everyone calls them bugs anyway!
Lives in
Started around the Mediterranean, now on most continents, under logs, stones and plant pots
Length
0.9 to 1.5 cm (0.35 to 0.59 in)
Top speed
about 1.5 km/h (0.93 mph)
On foot, estimate
Can it hurt you?
Can bite or sting
What does it eat?
It mostly eats woodlice, using its big jaws to get past their hard armour. It also catches silverfish, earwigs, millipedes and crickets.
For real!Photo of Woodlouse spider
Picture by Matthew Lindsey. CC BY 4.0, via Wikimedia Commons.

How big is it?

How long is it?

Woodlouse spider about 1.5 cm long (0.59 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 2.5 grains of rice in a rowcould run across a dinner table in 2.4 secondsmoves 28 times its own body length every second

How big is Woodlouse spider compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

It does not spin a web to catch food. It walks around at night and hunts.

2

In the daytime it hides in a little silk tent in old wood or under a stone.

3

It is so strong for its size that it can even beat other spiders and centipedes.

4

The mother keeps up to 70 eggs in a silk bag and is thought to look after her babies.

you asked

Most asked questions about Woodlouse spider

?What does a woodlouse spider eat?

Mostly woodlice, but also other small crawling creatures like silverfish and earwigs.

?Where do woodlouse spiders live?

Under logs, rocks, bricks and plant pots in warm places, sometimes even in houses.

For bug experts

Scientific name
Dysdera crocata
Group
Spiders
Family
Dysderidae
Classification
Arachnida > Araneae > Dysderidae
Lives on
Europe, Asia, Africa, North America, South America, Australia and Oceania
Also known as
Woodlouse hunter, Sowbug hunter, Pillbug hunter, Slater spider

Where the facts come from

  1. Woodlouse 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 Matthew Lindsey. CC BY 4.0, 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