Coastal Browntail Moth
(one synonym : Porthesia irrorata Lucas, 1892)
LYMANTRIIDAE , NOCTUOIDEA
(Photo: courtesy of Peter Marriott, Moths of Victoria: Part 2)
This caterpillar is black, with white spots on the thorax, and has six red true legs at the front, and two red dorsal glands on the rear.
The caterpillar is superficially similar to that of Euproctis melanosoma. The cocoon is different.
The cocoon of Orvasca semifusca is barrel-like, whereas that of Euproctis melanosoma is a fluffy mess.
The adult male moth has a brown body, and dark brown forewings. The hindwings are orange. The male moth has a wingspan of about 2 cms.
The female is black with white legs and a wide brown tuft on her tail. The female has long narrow forewings, and tiny hindwings, and cannot fly.
The species has been found in
Further reading :
Moths of Victoria: part 2,
Tiger Moths and their Allies - Noctuoidea (A),
Entomological Society of Victoria, 2009, pp. 16-19.
Thomas P. Lucas,
On 34 new species of Australian Lepidoptera, with additional localities,
Proceedings of the Royal Society of Queensland,
Volume 8 (1892), pp. 77-78.
Characters of undescribed Lepidoptera Heterocera,
E.W. Janson, London, 1869, pp. 65-66, No. 4.
(updated 2 August 2010)