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🧬 Biological Classification (Kingdom to Species)Formica japonica

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Formicidae

Genus

Formica

Species

Formica japonica

Insecta❔ Diet unknown

Japanese wood ant

Formica japonica (Japanese wood ant · クロヤマアリ)

🛡️ Conservation Status (IUCN Red List)NE (Not Evaluated)

Not Evaluated (NE) on the IUCN Red List yet.

Geological Era

Extant

Diet

No data

Length · Height

1.3cm · No data

Mass · Top Speed

No data · No data

Habitat & Fossil Locality

Dry mountain grasslands, open lots around homes, and underground beneath stones

💡 Everyday Comparisons for Size, Mass & Speed

💡 The worker length of 4.5–6 mm is around one-fifth the diameter of a Korean 500-won coin (26.5 mm) (Comparison).
💡 It builds nests in open lots or under stones around homes and sometimes harms flowerbeds and field crops by tending aphids (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.

#곰개미#Formica japonica

📖 1. Overview

The Japanese wood ant is a medium-sized ant among Korean ants, inhabiting all of Korea and widely distributed across East Asia including Russia, Mongolia, Japan, and China.

🦴 2. Anatomy & Morphology

Its body is black to blackish-brown with scattered glossy grayish-brown hairs. Its head is oval and its petiole is thick and scale-shaped. Body length is about 13 mm in queens, 4.5–6 mm in workers, and about 11 mm in males.

🔍 3. Ecology & Behavior

It builds its nests mainly underground in dry grasslands or beneath stones and also overwinters underground. Adults appear from March to October and sometimes cause damage by tending aphids on garden and farm crops.