Australian Native Bee

Once again, an ID mystery! This very small, black and yellow bee, making its way along a dry grass stem, is very possibly a Fire-tailed Resin Bee. The only hitch is, I can only find images of bees which have orange-coloured abdomens. This one had a very definite golden-yellow tummy! I suspect the colour comes from the pollen that the little critter is carrying.

Done