Hemiphlebiidae

Hemiphlebia, commonly known as the ancient greenling, is a genus of damselfly, containing only one species Hemiphlebia mirabilis and is the only living genus in the family Hemiphlebiidae. It is very small with a long, metallic-green body and clear wings. It is endemic to south-eastern Australia. Its natural swamp habitat is threatened by habitat loss. The oldest representatives of the family date to the Late Jurassic.

Hemiphlebiidae is a family of damselflies. It contains only one extant species, the ancient greenling, native to south-eastern Australia and Tasmania. The fossil record of the group extends back to the Late Jurassic, making them the oldest known crown group damselflies.