This guy was stuck between the deck on my verandah, so I took a few pics and then put him back in the forest where he promptly flew off, like a jeweled drone.

The male of the  Muelleer’s stag beetle (also known as rainbow stag or king stag) has horns that are used to battle with rival males.  This beetle is endemic to the Wet Tropics.

This pretty chappy was about 60mm long.