Typical posture for Coleophora with forward directed antennae which is shared with Plutellidae. Coleophora serinipennella is in Australia widespread, originally imported species which is very variable, much more so than in pictures I have seen, so t me the most likely option. The two small dark spots are typical of this species. A warning: this genus is very poorly documented in Australa and there can be many more species than currently "officially" recognized.
Thanks Lkaila. I have proposed "Coleophoridae" which is available on NM. Is this a single genus in Australia (as far as we know)? I could create "Coleophora (genus)" ? ibaird - NM has "Coleophoridae" listed (twice) in 'other moths' while ALA has it in GELECHIOIDEA. Is there a reason for this, or is it a slipup?
I remain to be convinced this is Coleophoridae or Coleophora (genus) given the recognided Australian species in this family or are few and I see none online classified as such similar to this specimen. But yes, family Coleophoridae, is in superfamily Gelechioidea (AFD). Here on NatureMapr Coleophora alcyonipennella has been correctly allocated to Gelechioidea. I'm not sure I see the dark spots on this streaked specimen which are similar to Coleophora serinipennella.
I received a request to verify if this record represents Coleophoridae. I don't quite know how to do that technically correctly so I write my comment here (and made a note to the box above suggesting Coleophora, but itr may be that such choice does not exist so that may not come through, though). I am still certain that this is a member of the genus Coleophora, family Coleophoridae, in superfamily Gelechioidea; species best to keep unidentified. In Australia there is also another coleophorid genus, Corythangela (it includes one named species and some further known, but undescribed ones), but the moth in the photo does not belong to that genus. Unfortunately there apparently are not much photos to be found online of Australian Coleophora; the one now under discussion is however an excellent example of a typical-looking one.
see e.g. https://www.norfolkmoths.co.uk/micros.php?bf=5450 https://www.naturespot.org/species/coleophora-albicosta https://butterfliesofcrete.com/moths-of-crete/a-z-moth-families/family-coleophoridae/coleophora-semicinerea/