Despite the distinctive colour pattern, I like to check as many other features as possible against a putative species description. For example, here the colour of the mandibles, legs, mesoscutum all fit with Bembix vespiformis … as do the 7 long, dark pecten spines on each of the front basitarsi (arrows).

Note that this is one of many Bembix species widely distributed across continental Australia.

Bembix vespiformis

Image courtesy Kerry Stuart
https://inaturalist.ala.org.au/observations/195650631