The wingspan is about 20 mm. The forewings are dark brown with white speckles. The hindwings are yellow with a dark brown margin.
The larvae feed on moulds, lichen and algae. They rest during the day and feed at night. The larvae are speckled with light and dark grey and are covered with hairs.
- Savela, Markku (7 December 2015). "Halone sinuata (Wallengren, 1860)". Lepidoptera and Some Other Life Forms. Retrieved 18 October 2019.
- Herbison-Evans, Don & Crossley, Stella (19 November 2011). "Halone sinuata (Wallengren, 1860) Rock Lichen Moth". Australian Caterpillars and their Butterflies and Moths. Retrieved 18 October 2019.
- Pitkin, Brian & Jenkins, Paul. "Search results Family: Arctiidae". Butterflies and Moths of the World. Natural History Museum, London.
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