''Polysoma eumetalla'' is a

moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of w ...

of the family

Gracillariidae Gracillariidae is an important family of insects in the order Lepidoptera and the principal family of leaf miners that includes several economic, horticultural or recently invasive pest species such as the horse-chestnut leaf miner, ''Cameraria ...

. It is known from the Australian states of

Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_ ...

New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...

South Australia South Australia (commonly abbreviated as SA) is a state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest of Australia's states and territories ...

Tasmania ) , nickname = , image_map = Tasmania in Australia.svg , map_caption = Location of Tasmania in AustraliaCoordinates: , subdivision_type = Country , subdi ...

and

Victoria Victoria most commonly refers to: * Victoria (Australia), a state of the Commonwealth of Australia * Victoria, British Columbia, provincial capital of British Columbia, Canada * Victoria (mythology), Roman goddess of Victory * Victoria, Seychelle ...

and from

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...

. The

wingspan The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the other wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingspan of ...

is about 10 mm. Adults have a metallic gold colour with white markings. The

larva A larva (; plural larvae ) is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle. The ...

e feed in galls on ''

Acacia dealbata ''Acacia dealbata'', the silver wattle, blue wattle or mimosa, is a species of flowering plant in the legume family (botany), family Fabaceae, native plant, native to southeastern Australia in New South Wales, Victoria, Tasmania, and the Australi ...

'', caused by the rust fungus ''

Uromycladium tepperianum ''Uromycladium tepperianum'' is a rust fungus that infects over 100 species of ''Acacia'' and related genera including ''Paraserianthes'' in Australia, south-east Asia, the south Pacific and New Zealand.Morris, M.J. (1987). Biology of the ''Acac ...

'' and in galls on ''

Acacia melanoxylon ''Acacia melanoxylon'', commonly known as the Australian blackwood, is an ''Acacia'' species native in South eastern Australia. The species is also known as Blackwood, hickory, mudgerabah, Tasmanian blackwood, or blackwood acacia. The tree belon ...

'', caused by the fly ''

Cecidomyia acaciaelongifoliae ''Cecidomyia'' is a genus of gall midges in the tribe Cecidomyiini Cecidomyiini is a tribe of gall midges in the family Cecidomyiidae Cecidomyiidae is a family of flies known as gall midges or gall gnats. As the name implies, the larvae ...

''.

References

Gracillariinae Moths of New Zealand Moths described in 1880 {{Gracillariinae-stub