Caliagrion is a monotypic genus of damselflies belonging to the family Coenagrionidae.

[4] The single species of this genus, Caliagrion billinghursti,[5] is commonly known as a large riverdamsel,[6] and is endemic to south-eastern Australia, where it inhabits slow-flowing rivers and ponds.

[7] Caliagrion billinghursti is a large damselfly; the male is coloured bright blue with black, while the female is yellow and black.

[6]