Possibly a Cermatulus nasalis nymph, 5th instar? It really was this colourful. Oxley Creek, QLD.
This raft of bugs is floating amidst detritus in a livestock trough. The small herd seem to be feeding on the larger winged insect. They are so light most of them do not make a visible impression on the water surface. Kyogle, NSW.
Baby bugs newly hatched - some are still a bit squashed from being stuck inside an egg. Kyogle, NSW.