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Science & Nature • Entomology

Atlas moth

The atlas moth (*Attacus atlas*) is a large moth in the family Saturniidae, native to tropical and subtropical forests of South and Southeast Asia.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 27, 2026|2 min read| Fact-checked

The atlas moth (Attacus atlas) is a large moth in the family Saturniidae, native to tropical and subtropical forests of South and Southeast Asia. It is widely noted for having one of the largest wing surface areas of any moth and for the snake-head-like pattern on the tips of its wings. Adults do not feed and have a short lifespan after emerging from the cocoon.

Description

The atlas moth is a very large moth with reddish-brown wings and translucent triangular patches near the tips. The wing pattern is often described as snake-head-like, which may help deter predators.

Distribution and habitat

The species is native to tropical and subtropical rainforest regions across South and Southeast Asia, including areas from India through Indonesia and southern China.

Life cycle and feeding

Adult atlas moths do not have functional mouthparts and survive on energy reserves stored during the caterpillar stage. Their adult life is short, while the caterpillars feed on a range of woody plants.

Human use

The species is occasionally associated with silk production because its cocoons can be processed into a brown silk called fagara silk. This use is much less important economically than silkworm production.

Key facts

  • It is a saturniid moth endemic to forests of Asia.
  • It is among the largest moths in the world, especially by wing surface area.
  • Adults lack functional mouthparts and do not feed.
  • Females are generally larger than males.
  • The wing tips have translucent patches that resemble a snake’s head.
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Canadian context

The atlas moth is mainly of interest to Canadian readers as a globally notable insect species studied in entomology, biodiversity, and silk-related natural history collections.

Frequently asked questions

What is the atlas moth?
The atlas moth is a large moth species, Attacus atlas, in the family Saturniidae, native to forests in South and Southeast Asia.
How big is the atlas moth?
It is one of the largest moths in the world, especially in terms of wing surface area; reported wingspans are around 25–30 cm, with females typically larger than males.
Where does the atlas moth live?
It lives in tropical and subtropical forests across South and Southeast Asia, including parts of India, China, Taiwan, and the Malay Archipelago.
Do adult atlas moths eat?
No. Adults lack functional mouthparts and do not feed, relying instead on stored fat reserves from the caterpillar stage.
Why is it called the atlas moth?
The name is commonly linked either to the Greek titan Atlas or to the map-like appearance of its wing patterns.

References

  1. Wikipedia — https://en.wikipedia.org/wiki/Attacus_atlas
    Supports: Scientific name, common name, family, and general description of the species.
  2. California Academy of Sciences — https://www.calacademy.org/learn-explore/specimens-in-focus/atlas-moth
    Supports: Range in Asia and family Saturniidae.
  3. Britannica — https://www.britannica.com/animal/atlas-moth
    Supports: Native habitat, size, silk use, and status as one of the largest moths.
  4. Bug Identifier — https://bugidentifier.com/encyclopedia/atlas-moth
    Supports: Wing markings, adult mouthparts, lifespan, and habitat details.
  5. Cambridge Butterfly Conservatory — https://www.cambdridgebutterfly.com/attacus-atlas/
    Supports: Wingspan, female-male size difference, host plants, and short adult lifespan.