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Tiny animals

Joro spider

Amazing fact

The Joro spider spins golden silk for its web.

国土交通省九州地方整備局
Joro spider in its habitat (illustration)

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An illustration based on the real animal.

A little discovery to share.

The Joro spider spins golden silk for its web.

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THE REAL WORLD

The real Joro spider

Scientific name
Trichonephila clavata
Japanese name
ジョロウグモ
Group
Tiny animals
Class
Arachnida
Order
Araneae
Family
Araneidae
Genus
Trichonephila
Facts about the real animal.
01

A spider found in many kinds of places, from around houses to grasslands, woods and mountains.

02

Females are much bigger than males, and the shape and pattern of the abdomen vary a lot.

03

It builds a round web and strings extra threads in front of and behind it, making a layered web.

How the Joro spider lives

It catches and eats insects. In autumn it matures and lays a white egg sac on places such as tree bark. The eggs hatch the following spring, and the spiderlings molt as they grow into adults.

国土交通省九州地方整備局

Basic data

Size
Body length: females 17–30 mm, males 6–13 mm
Range
Honshu, Shikoku, Kyushu and northern Nansei Islands
まちだエコライフ推進公社

Where the Joro spider has been recorded

World map with dots where the Joro spider has been recorded
Each dot marks a place with observations or specimens shared on GBIF. Some records are of animals that strayed or were brought by people, so the dots are not always where the animal lives.

Records: GBIF.org (CC0 and CC BY 4.0 records, retrieved 2026-11-07). Map: Natural EarthSee the records on GBIF

Watch wild animals from a distance. Do not touch or feed them, and take care of the places where they live.

Names around the world

简体中文
棒络新妇
繁體中文
棒絡新婦
한국어
무당거미

Names come from Wikidata and iNaturalist records. Where a language has no recorded name, we use the scientific name.

Sources and how we check

We check each fact against its source. The illustrations simplify how the real animal looks.

The classification (class, order, family, genus) follows Wikidata records, checked against GBIF. Classifications can change as research goes on.

The basic data are the values given in each source. They vary with how the animal is measured, whether it is male or female, and whether it lives in the wild or in captivity.

This page was translated from the original Japanese with the help of AI.

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