Caliagrion
Caliagrion is a monotypic genus of damselflies belonging to the family Coenagrionidae.
The single species of this genus, Caliagrion billinghursti,
is commonly known as a large riverdamsel,
and is endemic to south-eastern Australia,
where it inhabits slow-flowing rivers and ponds.
Caliagrion billinghursti is a large damselfly; the male is coloured bright blue with black, while the female is yellow and black.