Dicranolaius bellulus

So tiny, the native red and blue banded beetle. Males have an enlarged third antennal segment as seen here, used to grasp the female's antennae during mating. This one was around 5 mm length.

Eggs are laid in soil. Larvae feed on small soil organisms, pupate and emerge in spring. Adults fly about and actively search for prey, feeding on small invertebrate eggs, slow-moving insects and pollen.