The Scale Moth larvae eats the scale insects and covers its body with the remains to create a protective case. This reference shows an example:
http://lepidoptera.butterflyhouse.com.au/acon/coccophaga.html
Mataeomera (genus) is listed in the following regions:
Canberra & Southern Tablelands
Species page sighting lists are under redevelopment and will return very soon.
Synonyms
Catoblemma sp. (genus)