Pacific foldingdoor spider
Antrodiaetus pacificus
Name means: “lives in caves, because the genus name comes from Greek words for a cave and a way of life”
This dark brown spider lives in a burrow with a door. All day it keeps the door shut. When it gets dark, it opens up and waits at the entrance for a beetle to walk past.
Fun fact: spiders are not insects. Insects have six legs, spiders have eight. Everyone calls them bugs anyway!
Lives in
The Pacific coast of North America, from San Francisco Bay to Alaska, in cool damp forests
Length
1.1 to 1.3 cm (0.43 to 0.51 in)
females are a little bigger than malesWhat does it eat?
It catches small animals that wander past its burrow, mostly beetles.
How big is it?
How long is it?
🍚as long as 2 grains of rice in a row🍽️could run across a dinner table in 2.6 seconds⚡moves 30 times its own body length every second
How big is Pacific foldingdoor spider compared to YOU?
Just maths in your browser. Nothing is saved or sent anywhere.
How fast is it?
A tortoise about 0.3 km/h (0.19 mph)
Pacific foldingdoor spider about 1.4 km/h (0.87 mph)
A person walking about 5 km/h (3.1 mph)
A kid running fast about 13 km/h (8.1 mph)
cool stuff
Fun facts
1
It is the spider of its kind that lives farthest north in North America.
2
It digs its burrow in soft sand, moss or rotting wood.
3
The mother keeps her eggs safe inside the burrow, and the spider spends the winter there too.
4
It is busiest in late summer.
you asked
Most asked questions about Pacific foldingdoor spider
?What does the foldingdoor spider eat?
Mostly beetles that walk past the door of its burrow at night.
For bug experts
- Scientific name
- Antrodiaetus pacificus
- Named by
- Simon, 1884
- Group
- Spiders
- Family
- Antrodiaetidae
- Classification
- Arachnida > Araneae > Antrodiaetidae
- Lives on
- North America
Where the facts come from
- Antrodiaetus pacificus (Wikipedia, CC BY-SA 4.0): what it looks like, where it lives, what it eats, sizes and fun facts, retold in simple words.
- Picture by G. Blagoev, Centre for Biodiversity Genomics. CC BY-SA 3.0, Wikimedia Commons. The sticker of this bug is drawn from this picture.
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