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Sticker of Mediterranean black widow
Bug card No. 0903 of 1,500

Mediterranean black widow

Latrodectus tredecimguttatus
Name means: “with thirteen spots”
Eats: Other bugs and small animalsSpidersGardens and meadows8 legsNot an insect, but a bug cousin

The Mediterranean black widow is a shiny black spider with thirteen little red spots on its round back. It lives in dry grassy places and fields around the Mediterranean Sea and in Central Asia. It is shy, but it is one of the spiders that you must never touch.

Fun fact: spiders are not insects. Insects have six legs, spiders have eight. Everyone calls them bugs anyway!
Lives in
Around the Mediterranean Sea and in Central Asia, in grassland, steppes and fields
Length
0.4 to 1.5 cm (0.16 to 0.59 in)
females are much bigger than males
Top speed
about 1.5 km/h (0.93 mph)
On foot, estimate
Can it hurt you?
Dangerous: look, do not touch
What does it eat?
It catches insects in its web, even ones bigger than itself.
For real!Photo of Mediterranean black widow
Picture by No machine-readable author provided. Kork~commonswiki assumed (based on copyright claims).. Public domain, via Wikimedia Commons.

How big is it?

How long is it?

Mediterranean black widow 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 Mediterranean black widow compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

Its scientific name means with thirteen spots. The spots are usually red, but can be yellow or orange.

2

In Kazakhstan it is called karakurt, which means black bug.

3

The famous bug scientist Fabre wrote about watching it rush at insects bigger than itself.

you asked

Most asked questions about Mediterranean black widow

?How can you recognise a Mediterranean black widow?

It is black with thirteen spots on its back, usually red.

?How big is the Mediterranean black widow?

Females are about 7 to 15 millimetres long. Males are smaller, about 4 to 7 millimetres.

For bug experts

Scientific name
Latrodectus tredecimguttatus
Group
Spiders
Family
Theridiidae
Classification
Arachnida > Araneae > Theridiidae
Lives on
Europe, Asia
Also known as
European black widow, Karakurt, Malmignatte

Where the facts come from

  1. Latrodectus tredecimguttatus (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 No machine-readable author provided. Kork~commonswiki assumed (based on copyright claims).. Public domain, 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