Spiny Bark Mantid

Size about 13mm without legs. Found about 1.6 metres above ground on a tree with heavily grooved bark. It was doing that manta 'thing', only moving in some slow backwards-forwards movement as if a leaf moving in the wind. The identification on species level might not be accurate, since ALA doesn't show a record from Southeast Queensland. The pictures of the locally more common G. kraussi don't seem to match.