Bug Wiki
Sticker of Bridge spider
Bug card No. 0185 of 1,500

Bridge spider

Larinioides sclopetarius
Name means: “it is called the bridge spider because it likes to build its webs on bridges”
Eats: Other bugs and small animalsSpidersPonds, rivers and shores8 legsNot an insect, but a bug cousin

The bridge spider is a big grey orb-web spider with a white outline around its head and dark markings on its body. It loves bridges, boats and buildings near water, especially near lamps. The light draws in insects, and that means dinner.

Fun fact: spiders are not insects. Insects have six legs, spiders have eight. Everyone calls them bugs anyway!
Lives in
Europe and North America, on bridges, boats and buildings near water
Length
1 to 1.4 cm (0.39 to 0.55 in)
females; males are 8 to 9 mm
Top speed
about 1.4 km/h (0.87 mph)
On foot, estimate
What does it eat?
It catches small flying insects in its web at night. Most of its food is tiny midges.
For real!Photo of Bridge spider
Picture by Mario Bassini. CC BY 4.0, via Wikimedia Commons.

How big is it?

How long is it?

Bridge 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 2.6 secondsmoves 28 times its own body length every second

How big is Bridge spider compared to YOU?

Just maths in your browser. Nothing is saved or sent anywhere.

How fast is it?

cool stuff

Fun facts

1

Its round web can be up to 70 centimetres across.

2

In the best spots near lights, as many as 100 of these spiders can live in one square metre.

3

It hides during the day and sits in the middle of its web at night, waiting for food.

4

Spiders living near lights are often healthier and have more babies than those in the dark.

5

It likes metal things like steel bridges and is hardly ever seen on plants.

you asked

Most asked questions about Bridge spider

?Why are there so many spiders on bridges?

Lamps over water attract lots of insects, and bridge spiders build their webs there to catch them.

?What does the bridge spider eat?

Small flying insects, mostly tiny midges.

For bug experts

Scientific name
Larinioides sclopetarius
Named by
Clerck, 1757
Group
Spiders
Family
Araneidae
Classification
Arachnida > Araneae > Araneidae
Lives on
Europe, North America
Also known as
Gray cross-spider

Where the facts come from

  1. Larinioides sclopetarius (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 Mario Bassini. 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: Ponds, rivers and shores