Eusynthemis nigra (Black Tigertail) ranges over much of Queensland on the eastern coast of Australia, excluding Cape York, and down to north-eastern New South Wales. It is also recorded in inland southern inland Queensland. The identification points made in Theischinger/Hawking are confusing to say the least so I’m skipping that.
We met this species in Mapleton Falls NP, Finch Hatton Gorge, Dalrymple Heights and in the Northbrook Gorges. There are pictures included from all places.