The inner segment of the palps in this specimen is a dark grey colour without hairs. That contrasts with the inner segments of the palps of Zacorus carus which are white and hairy in the examples I see here on NatureMapr and online elsewhere.
Quite possibly, I think. The yellowness seems to vary. Interesting that most perhaps all observations of T. metachroa on the ALA seem to originate from NatureMapr and the Canberra and Southern Tablemands region. iNaturalist's only record looks different and has spots on the forewing.