Diphlebia lestoides is a species of Australian damselfly in the family Lestoideidae,[3] commonly known as a whitewater rockmaster.

[4] It is endemic to south-eastern Australia, where it inhabits streams and rivers.

[5] Diphlebia lestoides is a large, solid-looking damselfly; the male is a blue to grey colour with black markings, while the female has a more muted colouring.

It sits with its white marked wings spread out.

[6]