Yes, WendyEM I think you may be correct: The pattern of white marking,s the darker base colour and the strong yellow highlights do sugget a P. vetusta (male) rather than P. delineata.
rather dark specimen ? Porela vetusta - male https://bold-au.hobern.net/specimens.php?taxid=283312 https://bie.ala.org.au/species/https://biodiversity.org.au/afd/taxa/7ded7b5c-59f6-4a6e-9005-a11aae4f72cf https://inaturalist.ala.org.au/observations?place_id=6744&quality_grade=research&taxon_id=1087245
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.