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🧬 Biological Classification (Kingdom to Species)Hyphantria cunea

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Lepidoptera

Family

Erebidae

Genus

Hyphantria

Species

Hyphantria cunea

Insecta🌿 Herbivore

Fall webworm

Hyphantria cunea (Fall webworm · アメリカシロヒトリ)

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

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

Geological Era

Extant

Diet

Herbivore

Length · Height

2.5cm · No data (Wingspan 0.025m)

Mass · Top Speed

No data · No data

Habitat & Fossil Locality

Artificial environments with broadleaf trees (plane trees, cherry trees, apple trees, etc.); it rarely enters natural forest zones

💡 Everyday Comparisons for Size, Mass & Speed

💡 Its wingspan of 2.8–3.8 cm is slightly larger than the diameter of a Korean 500-won coin (2.65 cm) (Comparison).
💡 Feeding on the leaves of familiar trees such as plane trees, cherry trees, and apple trees, it damages urban trees and orchards and lives mainly in artificial environments (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.

#미국흰불나방#Hyphantria cunea

📖 1. Overview

The fall webworm is a moth native to North America that is known to have entered Korea in 1957 and spread nationwide. Its caterpillars feed on over 160 tree species—including plane trees, cherry trees, and apple trees—and sometimes cause heavy damage.

🦴 2. Anatomy & Morphology

Its wingspan is 28–38 mm, and both forewings and hindwings are white with scattered black spots. Caterpillars have a black head with a yellow or green body in the north, and an orange or red head with a yellow or light brown body in the south (ADW).

🔍 3. Ecology & Behavior

Adults appear twice a year, around May and from July to early September. Caterpillars are active during the day, spinning white web tents at the tips of branches and eating leaves, while adults are active at night and feed on sap and nectar (ADW).

🇰🇷 4. Connection to Korea

It is distributed in central and southern Korea, with no collection records from offshore islands. After entering Korea in 1957 and spreading nationwide, it lives mainly in artificial environments (National List of Species of Korea).