Bug Wiki
Sticker of Pennsylvania grass spider
Bug card No. 1040 of 1,500

Pennsylvania grass spider

Agelenopsis pennsylvanica
Name means: “it was first described in Pennsylvania, and its web is shaped like a funnel”
Eats: Other bugs and small animalsSpidersGardens and meadows8 legsNot an insect, but a bug cousin

The Pennsylvania grass spider builds a flat web with a funnel at one end, like a little tunnel. It sits at the opening of the funnel and waits. When an insect lands on the web, it rushes out super fast to grab it.

Fun fact: spiders are not insects. Insects have six legs, spiders have eight. Everyone calls them bugs anyway!
Lives in
Across much of the United States, in open grassy places, often near water
Length
0.7 to 1.4 cm (0.28 to 0.55 in)
females are usually bigger than males
Top speed
about 1.4 km/h (0.87 mph)
On foot, estimate
What does it eat?
It eats many kinds of insects, like true bugs, beetles, flies, ants, bees, grasshoppers and crickets.
For real!Photo of Pennsylvania grass spider
Picture by D. Gordon E. Robertson. CC BY-SA 3.0, via Wikimedia Commons.

How big is it?

How long is it?

Pennsylvania grass 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 Pennsylvania grass spider compared to YOU?

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

How fast is it?

cool stuff

Fun facts

1

It lives alone and does all its hunting from its funnel web.

2

Young spiders show different personalities: some are bold and some are shy.

3

Its front middle eyes are its biggest eyes.

4

It likes damp places, so you find more of them near rivers and floodplains.

5

Sometimes the female eats the male when they meet to mate.

you asked

Most asked questions about Pennsylvania grass spider

?What does a grass spider eat?

Insects that land on its web, such as beetles, flies and grasshoppers.

?How big is the Pennsylvania grass spider?

It is about 7 to 14 millimetres long.

For bug experts

Scientific name
Agelenopsis pennsylvanica
Group
Spiders
Family
Agelenidae
Classification
Arachnida > Araneae > Agelenidae
Lives on
North America
Also known as
Pennsylvania funnel-web spider

Where the facts come from

  1. Agelenopsis pennsylvanica (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 D. Gordon E. Robertson. 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