- · 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.
- · Hydatophylax nigrovittatus silhouette: PhyloPic — Prespa Research Group · CC0 1.0 (Limnephilidae)
- · Human silhouette: PhyloPic — NASA · Public Domain Mark 1.0
Hydatophylax nigrovittatus
Hydatophylax nigrovittatus (Hydatophylax nigrovittatus · Hydatophylax nigrovittatus)
Not Evaluated (NE) on the IUCN Red List yet.
💡 Everyday Comparisons for Size, Mass & Speed
- 💡 Its body length of 35 mm is about 1.3 times the diameter of a Korean 500-won coin (26.5 mm) (Comparison).
- 💡 On the bottoms of clear streams, you can see the larvae carrying cylindrical cases built from wood fragments and small pebbles (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
Hydatophylax nigrovittatus is a large caddisfly 30–35 mm in body length whose larvae build cylindrical cases and live in clear streams.
🦴 2. Anatomy & Morphology
Small spots are scattered on the head, and large sclerotized plates with many brown spots cover the dorsal surfaces of the prothorax and mesothorax. Its case is larger than the body and is a cylinder made of wood fragments and small stones.
🔍 3. Ecology & Behavior
Larvae eat fallen leaves or detritus in the water and drag their cases along using 3 pairs of legs. Adults appear in spring.
🇰🇷 4. Connection to Korea
According to the National List of Species of Korea, it lives in Gyeonggi-do and Gangwon-do in Korea and is also distributed in Japan, China, and Russia.
📚 Sources & References
- • IUCN Red List: not evaluated (NE) — cross-checked with the Wikidata conservation-status entry
- • catalogueoflife.org — 3MZ8L
- • 국가생물종목록(국립생물자원관) ktsn 120000038681 — https://species.nibr.go.kr/home/mainHome.do?cont_link=009&subMenu=009002&contCd=009002&ktsn=120000038681
- • wikidata.org — Q7576917
- • species.nibr.go.kr — mainHome.do
- • Silhouette: PhyloPic — Prespa Research Group · CC0 1.0 (Related taxon silhouette — Limnephilidae)
Recorded dimensions are widely cited representative estimates from public literature and may vary by study or specimen.