Despite numerous sightings of these nymphs we have never seen an adult.
Classification
from Australian Faunal Directory
Order Hemiptera - bugs, hoppers and scale insects
Suborder Heteroptera - true bugs, 2806 named species in Australia
Superfamily PENTATOMOIDEA - Shield Bugs, 572 named species in Australia
Family ACANTHOSOMATIDAE - Parent Bugs, 48 species in Australia
Genus Poecilometis
Species Poecilometis patruelis