Gum treehopper (Eurymela distincta)

Hypnotic black-white eyes; blue tube femurs; deep copper-blue-bronze patina over dark gloss; white patches on either shoulder and on either flank; attended and groomed by mid-sized, unknown local ant species.
Found on a local endemic species of eucalyptus.
The metallic patina is attributable to brochosomes. These are tiny geodetic spherical structures (a bit like Buckminster fullerenes ) which are only known to be naturally produced by these creatures. They produce them internally and, after moulting, excrete some through their anus, spreading it all over their body in a grooming session. The resulting coating looks and behaves like a super-wax which protects the insect from the sticky sugary substances it makes later to feed the ants. There are also suggestions that some species might use the brochosomes to protect their eggs.