Joro spider
The Joro spider is a big, colourful spider with yellow and dark blue stripes and a splash of red. Its huge web can be several metres long, and in the sunshine the threads shine like gold. It comes from East Asia but now also lives in the United States.
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Fun facts
The girl is much bigger than the boy. She can be 25 millimetres long, the boy only about 10.
Its web has three layers: a round web in the middle and messy webs in front and behind.
The mother lays 400 to 1,500 eggs in one egg sack on a tree.
It spends the winter as an egg, and tiny baby spiders come out in spring.
It is named after a magical spider from old Japanese stories.
Most asked questions about Joro spider
?How big is a Joro spider?
The female's body is 17 to 25 millimetres long. The male is much smaller, 7 to 10 millimetres.
?Where do Joro spiders come from?
From East Asia: China, Japan, Korea and Taiwan. Since about 2013 they also live in the United States.
For bug experts
- Scientific name
- Trichonephila clavata
- Group
- Spiders
- Family
- Araneidae
- Classification
- Arachnida > Araneae > Araneidae
- Lives on
- Asia, North America
Where the facts come from
- Trichonephila clavata (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 Christina Butler from Georgia, United States. CC BY 2.0, 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 [email protected] and we will fix it.
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