Seems like this an undescribed species. I found 2 similar ACT observations by Donald Hobern on iNaturalist:
https://www.inaturalist.org/observations/20308726
https://www.inaturalist.org/observations/7409917
I can't find a match in BOLD, either named or unnamed. I can't see a match in Canberra NatureMapr either.
30 seconds to observe and photograph, 4 hours to not be able to ID :(
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