📸 PhotoPhoto: Christina Butler from Georgia, United States · CC BY 2.0 · Wikimedia Commons Source
Joro spider
Trichonephila clavata (Joro spider · ジョロウグモ)
Not Evaluated (NE) on the IUCN Red List yet.
💡 Everyday Comparisons for Size, Mass & Speed
- 💡 A 30 mm female is about 1.25 times the diameter of a Korean 100-won coin (24 mm) (Comparison).
- 💡 Its large webs spun with golden silk can be seen between trees along mountain trails, roadside bushes, and near homes (National List of Species of Korea).
Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.
📖 1. Overview
The Joro spider weaves large webs with golden silk, and males are noticeably smaller than females.
🦴 2. Anatomy & Morphology
Body length is 20–30 mm in females and 6–10 mm in males. The abdomen is an elongated cylinder with greenish-blue transverse bands on a yellow background, and the cephalothorax is covered with short silvery-white hairs.
🔍 3. Ecology & Behavior
It builds a large, 3-layered orb web of golden silk between trees or on buildings. The male is so small that it hardly looks like the same species.
🇰🇷 4. Connection to Korea
According to the National List of Species of Korea, it lives throughout the country and is distributed globally from India to Japan.
📚 Sources & References
- • IUCN Red List: not evaluated (NE) — cross-checked with the Wikidata conservation-status entry
- • catalogueoflife.org — 58FYQ
- • 국가생물종목록(국립생물자원관) ktsn 120000044814 — https://species.nibr.go.kr/home/mainHome.do?cont_link=009&subMenu=009002&contCd=009002&ktsn=120000044814
- • wikidata.org — Q104386227
- • commons.wikimedia.org — File:Joro Spider - Trichonephila clavata (50564813031).jpg
- • species.nibr.go.kr — mainHome.do
- • Silhouette: PhyloPic — Gabriela Palomo-Munoz · CC BY 4.0
Recorded dimensions are widely cited representative estimates from public literature and may vary by study or specimen.