Endoxyla cinereus, commonly known as the Giant Wood Moth, is a species of moth found in the woodlands of Australia. Known for its massive size, the female can have a wingspan up to 25 cm. This moth is nocturnal, with larvae that bore into eucalyptus trees, playing a crucial role in the ecosystem by aiding in the decomposition process.

Endoxyla cinereus, commonly known as the Giant Wood Moth, is native to Australia. It is predominantly found in the eastern parts of the continent, encompassing regions such as Queensland, New South Wales, and Victoria.

The Giant Wood Moth inhabits eucalyptus forests and woodlands, where the climate ranges from temperate to subtropical. These regions typically experience moderate to high rainfall and support dense vegetation, which provides the necessary resources for the moth's lifecycle.

Endoxyla cinereus occupies a niche within the ecosystem as both a pollinator and a prey species. The larvae feed on the wood of eucalyptus trees, playing a role in the decomposition process. As adults, they have a brief lifespan and limited mobility, relying on their large size and camouflaging colors to avoid predators.