Mokohinau Stag Beetle

The flightless beetle exists only in one patch of grass on an island known as Stack H in the Hauraki Gulf. It is unknown how many individual beetles remain, but their patch of grass is roughly the size of a living room.

The species was devastated by introduced rats, which made it to every island in the group except Stack H. It is one of our largest beetle species – males can grow to 3cm long.