Distinctly marked shield bug
Identified as Poecilometis armatus on Bowerbird by Matthew Connors: "Based on "A REVlSION OF THE SPECIES OF AUSTRALIAN AND NEW GUlNEA SHIELD BUGS FORMERLY PLACED IN THE GENERA POECILOMETIS DALLAS AND EUMECOPUS DALLAS (HETEROPTERA : PENTATOMIDAE), WITH DESCRIPTION OF NEW SPECIES AND SELECTTON OF LECTOTYPES""