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Sticker of Red-legged purseweb spider
Bug card No. 1146 of 1,500

Red-legged purseweb spider

Sphodros rufipes
Name means: “red foot”
Eats: Other bugs and small animalsSpidersForests and woods8 legsNot an insect, but a bug cousin

The red-legged purseweb spider is a sturdy black spider. The males have bright red legs, as if they were wearing red stockings. It lives in a silk tube against a tree trunk and grabs bugs right through the wall of its tube.

Fun fact: spiders are not insects. Insects have six legs, spiders have eight. Everyone calls them bugs anyway!
Lives in
The southern and eastern United States, sometimes further north, on tree trunks in woods
Length
1.5 to 2.5 cm (0.59 to 0.98 in)
Top speed
about 1.9 km/h (1.2 mph)
On foot, estimate
Can it hurt you?
Can bite or sting
What does it eat?
It eats insects and other small bugs that walk or land on its silk tube.
For real!Photo of Red-legged purseweb spider
Picture by unknown author. CC BY 2.0, via Wikimedia Commons.

How big is it?

How long is it?

Red-legged purseweb 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 Red-legged purseweb spider compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

Females can live up to 7 years, which is very long for a spider.

2

Only the males leave home, to go looking for a female. That is when you are most likely to see one.

3

The babies stay in their mother's web for up to a year before moving out.

you asked

Most asked questions about Red-legged purseweb spider

?Why do some have red legs?

Only the males have bright red legs. The females are dark all over.

?How big is the red-legged purseweb spider?

Females are about 2,5 centimetres long, males about 1,5 centimetres.

For bug experts

Scientific name
Sphodros rufipes
Named by
Latreille, 1829
Group
Spiders
Family
Atypidae
Classification
Arachnida > Araneae > Atypidae
Lives on
North America

Where the facts come from

  1. Sphodros rufipes (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 unknown author. CC BY 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: Forests and woods