Austroaeschna cooloola

Austroaeschna cooloola is a species of large dragonfly in the family Telephlebiidae, known as the Wallum darner. It has been found in south-eastern Queensland, Australia, where it inhabits sandy and densely vegetated streams.

Austroaeschna cooloola is a dark brown to black dragonfly with blue markings. It appears similar to the more widespread unicorn darner, Austroaeschna unicornis, and the tropical unicorn darner, Austroaeschna speciosa, found near Cairns in Far North Queensland.