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Sticker of Square-ended crab spider
Bug card No. 4149 of 4,939

Square-ended crab spider

Sidymella angularis
Eats: Other bugs and small animalsSpidersForests and woods8 legsNot an insect, but a bug cousin

The square-ended crab spider lives only in New Zealand. Its back end looks cut off square, and its bumpy grey, yellow or brown body looks just like a bit of bark. It does not spin a web to catch its food.

Fun fact: spiders are not insects. Insects have six legs, spiders have eight. Everyone calls them bugs anyway!
Lives in
Only New Zealand, from Northland to Stewart Island, in forests and gardens
Top speed
about 0.3 km/h (0.19 mph)
On foot, estimate
What does it eat?
It eats insects, and sometimes other small spiders.
For real!Photo of Square-ended crab spider
Picture by Shaun Lee. CC BY 4.0, via Wikimedia Commons.

How fast is it?

cool stuff

Fun facts

1

It waits very still and grabs passing insects with its strong, spiny front legs.

2

If danger comes, it can play dead and drop to the ground on a silk thread.

3

If it lands upside down, it flips itself back over by pushing with its legs and using its square back end like a pivot.

4

Mother spiders lay flat egg sacs under dead leaves and often stand guard over them.

5

It is the most common square-ended crab spider in New Zealand and is often found on ferns.

you asked

Most asked questions about Square-ended crab spider

?Does the square-ended crab spider make a web?

No. It waits quietly and grabs insects with its strong front legs.

?Where does the square-ended crab spider live?

Only in New Zealand, from gardens to native forest.

?What does the square-ended crab spider eat?

Insects, and sometimes other small spiders.

For bug experts

Scientific name
Sidymella angularis
Named by
Urquhart, 1885
Group
Spiders
Family
Thomisidae
Classification
Arachnida > Araneae > Thomisidae
Lives on
Australia and Oceania
Also known as
Common square-ended crab spider

Where the facts come from

  1. Sidymella angularis (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 Shaun Lee. CC BY 4.0, Wikimedia Commons. The sticker of this bug is drawn from this 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.

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More from the same group: Spiders

Also at home here: Forests and woods

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