🪐 View in 3D Galaxy 📏 View on 3D Scale Stage

🧬 Biological Classification (Kingdom to Species)Cheirotonus jambar

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Scarabaeidae

Genus

Cheirotonus

Species

Cheirotonus jambar

📏 True-scale comparison (1 m = 1 m) against a 1.75 m humanLength 6cm

🔍 Zoomed View — Same scale as a credit card & 2.65cm coin

· 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.
· Yanbaru long-armed scarab beetle silhouette: PhyloPic — Edwin Price · CC BY 4.0 (Hylamorpha elegans)
· Human silhouette: PhyloPic — NASA · Public Domain Mark 1.0

• Length vs. 1.75 m human: 0.03× Compare with other species →

Insecta❔ Diet unknown

Yanbaru long-armed scarab beetle

Cheirotonus jambar (Yanbaru long-armed scarab beetle · ヤンバルテナガコガネ)

🛡️ Conservation Status (IUCN Red List)EN (Endangered)

DDData Deficient

LCLeast Concern

NTNear Threatened

VUVulnerable

ENEndangered

CRCritically End.

EWExtinct in Wild

EXExtinct

Geological Era

Extant

Diet

No data

Length · Height

6cm · No data

Mass · Top Speed

No data · No data

Habitat & Fossil Locality

Natural forests with thick trees in northern Okinawa Island (Yanbaru), Japan

💡 Everyday Comparisons for Size, Mass & Speed

💡 Its body length of 6 cm is slightly longer than two Korean 500-won coins (diameter 26.5 mm) placed side by side (53 mm) (Comparison).
💡 World Natural Heritage materials from the Japanese Ministry of the Environment (for the Amami, northern Okinawa Island, and Iriomote region) introduce this insect as a representative organism of the area.

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.

#얀바루긴팔풍뎅이#Cheirotonus jambar

📖 1. Overview

The Yanbaru long-armed scarab beetle is an endemic species found only in the northern part of Okinawa Island, Japan, and is the largest beetle in Japan.

🦴 2. Anatomy & Morphology

The Japanese Ministry of the Environment records its body length as 5–6 cm and describes it as Japan's largest beetle. As its name suggests, it belongs to the long-armed scarab group with long forelegs.

🔍 3. Ecology & Behavior

It lives in natural forests where thick trees grow. The Japanese Ministry of the Environment Red List assessed it as IB (EN, a species at high risk of extinction in the near future), and the IUCN Red List assessed it as Endangered (EN) in 2015.