Are the leaves sticky hairy? They are in C. glandulosa. I have had a quick look at all the Brachyscomes and Calotis in SE NSW and none of them seem to fit very well. I suppose you needed to go back a couple of weeks later to see what the seeds were like.
I asked Rob Armstrong (Saving our Species) NSW Planning, Industry and Environment about this one. Rob is currently doing work on Calotis - while he could not completely rule out calories he thought Vittadinia gracilis was more likely - A seed or fruit shot would be good