Hi tpreston, thanks for the photo. Nice insect, but it's not an ant - think it's some kind of true bug. Hopefully one of the other entomologists will take a look. Cheers, Jon
I've made a new suggestion, Daerlac nigricans.
See:
https://bie.ala.org.au/species/urn:lsid:biodiversity.org.au:afd.taxon:adc22253-351c-4917-8a87-075a15459d11
Another possibility Daerlac apicalis See: https://bie.ala.org.au/species/urn:lsid:biodiversity.org.au:afd.taxon:59777869-1275-4ae9-b4d6-c8fea986c35f although the red legs might preclude it? Sorry I confirmed a sighting then deleted it . It might have been yours Michael B - an accident.