I think I have found it - thanks to Ian McMillan's posts https://xyloryctinemothsofaustralia.blogspot.com/search?q=Cryptophasa+themerodes https://inaturalist.ala.org.au/taxa/908904-Cryptophasa-themerodes https://bold-au.hobern.net/specimens.php?taxid=253238 https://bie.ala.org.au/species/https://biodiversity.org.au/afd/taxa/23805d48-c869-4dfa-baf9-eaaf28a666f2#names