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Hercules moth

Coscinocera hercules

Lepidoptera / Saturniidae

The Hercules moth is a large rainforest silk moth of northern Queensland, Australia. Clear wing windows, a heavily built body and the male’s elongated hindwing tails distinguish its adult form.

Read the species account
Coscinocera hercules, dorsal view
Hercules mothDorsal view.Illustration adapted from Coscinocera hercules, living Australian specimen at a North Queensland farm by Jim Bendon from Karratha, Australia. CC BY-SA 2.0.

At a glance

Family ↘
Saturniidae [1]
Australian range ↘
Northern Queensland [1]
Male morphology ↘
Long hindwing tails [1]

Identity

Coscinocera hercules is an Australian saturniid silk moth. William Henry Miskin described it in 1876 as Attacus hercules from a male and female collected at Cape York. [3]

Morphology and identification

Adults have clear triangular windows in the wings and a large, densely hairy body. Males have broad comb-like antennae and elongated hindwing tails; females have shorter, broader extensions. Mature larvae are blue-green with yellow tubercles. [1][2]

Distribution and habitat

The Hercules moth inhabits rainforest and monsoon forest in northern Queensland. Edwards described Australian populations between Cape York and Paluma; Monteith’s modern account places the moth from Cape York south to the Townsville region. [2][3]

Life cycle

The grey silk cocoon is enclosed in a host leaf and suspended from a twig by a silk stalk. Adults lack a proboscis and cannot feed or drink. [2]

Feeding and host plants

Native bleeding-heart, Homalanthus populifolius, is a larval host. Frederick Parkhurst Dodd found caterpillars feeding on this tree at Kuranda and grew it for rearing. Clyne and Frazier later reared larvae in Sydney using a potted tree and cut branches. [2][3]

Behaviour

In northern Queensland, adults are most often encountered during the wet season, although some appear in the dry season. They are attracted to lights. [2]

Nomenclature and history

The original male and female syntypes are held by the Queensland Museum. They anchor the name Coscinocera hercules to the Cape York specimens examined by Miskin. [3]

Sources and further reading

  1. Saturniidae: Emperor moths ↗

    CSIRO Australian Insect Families · Accessed 2026-10-11

  2. Hercules Moth, Coscinocera hercules; Moths in the Movies ↗

    Ted Edwards and Densey Clyne; Australian Natural History21(4),143,146(1984), Australian Museum · Accessed 2026-10-11

  3. Discovery and early study of Queensland’s Giant Moth, Coscinocera hercules (Miskin, 1876) (Lepidoptera: Saturniidae) ↗

    Geoff B. Monteith, Queensland Museum; News Bulletin of the Entomological Society of Queensland 51(9):196–203 (2024) · Accessed 2026-10-11

Sources checked 2026-10-11. Illustrations · Luminary Oddities.

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