Hemiphlebia mirabilis

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.

==Distribution and habitat== The ancient greenling has been recorded from a small number of scattered sites, including on King Island and in Mount William, Tasmania; in Wilsons Promontory National Park and near Yea, Victoria; and in Piccaninnie Ponds Conservation Park in south-eastern South Australia. Its recorded habitat includes permanent freshwater ponds, riverine lagoons and swamps that may dry out seasonally. A favoured site discovered in 2008, Long Swamp in the Discovery Bay Coastal Park of south-western Victoria, contains extensive areas of twig-rush (Baumea sp.) which is seasonally flooded but dries out by late summer