Ladybird larva cleans aphid guts off its arm. Oxley Creek, QLD.
These are quite large for aphids at around 3mm long (excluding the twin exhaust). David Attenborough told me they also lay eggs (as well as giving birth to clones) but apparently in Australia due to the way aphids were introduced, male aphids are very rare so our aphids don't lay eggs very often. Kyogle, NSW.
A small sample of a population of rose aphids on a rose bud stem. Kyogle, NSW.