Family Tessaratomidae. This insect is classed as a 'non-local native', as it has only colonised the region since suitable host plants (Rutaceae such as Citrus) have been cultivated here. It can become a minor pest.
https://www.brisbaneinsects.com/brisbane_stinkbugs/BronzeOrangeBugs.htm
Musgraveia sulciventris is listed in the following regions:
Canberra & Southern Tablelands | Southern Highlands | South Coast