- · Grid units represent actual meters (m); human and animals are drawn to the exact same scale with original silhouette aspect ratios preserved.
- · When a size range is recorded (e.g. 1–1.6m), the lower bound is used for scale comparison.
- · Yellow dashed line shows recorded total body length (including tail), which may differ from silhouette width due to posture.
- · Campodea ishii silhouette: PhyloPic — author not recorded · Public Domain Mark 1.0 (Campodea redii)
- · Human silhouette: PhyloPic — NASA · Public Domain Mark 1.0
Campodea ishii
Campodea ishii (Campodea ishii · Campodea ishii)
Not Evaluated (NE) on the IUCN Red List yet.
💡 Everyday Comparisons for Size, Mass & Speed
- 💡 Its body length of 3.25 mm is about one-sixth the diameter of a Korean 10-won coin (18 mm) (Comparison).
- 💡 Because it lives deep underground, it is rarely noticed, yet it has been recorded in soils of Korea, Japan, and China (ZooKeys paper).
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
Campodea ishii is a tiny soil-dwelling hexapod in the order Diplura, recorded from China, Korea, and Japan.
🦴 2. Anatomy & Morphology
Adults have a body length of 3.25 mm, antennae half the length of the body, and tail appendages (cerci) 0.7–0.8 times the body length. The thoracic tergites bear long, barbed bristles.
🔍 3. Ecology & Behavior
It appears to live in deep soil layers and is presumed to be subterranean. Details on its diet and reproduction are not available in this source.
🇰🇷 4. Connection to Korea
It is listed as 'Jom-but-i' (Korean name) on the National List of Species of Korea, and papers record its distribution in China, Korea, and Japan.
📚 Sources & References
- • IUCN Red List: not evaluated (NE) — cross-checked with the Wikidata conservation-status entry
- • checklistbank.org — M28XP
- • 국가생물종목록(국립생물자원관) ktsn 120000020924 — https://species.nibr.go.kr/home/mainHome.do?cont_link=009&subMenu=009002&contCd=009002&ktsn=120000020924
- • wikidata.org — Q12617217
- • pmc.ncbi.nlm.nih.gov — PMC12125596
- • Silhouette: PhyloPic — author not recorded · Public Domain Mark 1.0 (Congeneric silhouette — Campodea redii)
Recorded dimensions are widely cited representative estimates from public literature and may vary by study or specimen.