This species, Uperoleia marmorata or Marbled Toadlet, is only known by the holotype

Holotype

A holotype is a single physical example of an organism, known to have been used when the species was formally described. It is either the single such physical example or one of several such, but explicitly designated as the holotype...

 collected in the Kimberley region of Western Australia

Western Australia

Western Australia is a state of Australia, occupying the entire western third of the Australian continent. It is bounded by the Indian Ocean to the north and west, the Great Australian Bight and Indian Ocean to the south, the Northern Territory to the north-east and South Australia to the south-east...

 by Gray in 1841.

Physical description

Gray describe the frog as "…black and green marbled, leaving a triangular greenish spot on its forehead, beneath lead colour". This species is likely to have other features similar to other Uperoleia species such as: red-orange patches in the groin and behind the knees, tubercles and large parotoid glands as well as a granular belly. The frog is likely be to about 30mm in length.

This frog most likely resembles the Mjoberg's Toadlet

Mjoberg's Toadlet

Mjoberg's Toadlet is a species of frog in the Myobatrachidae family. It is endemic to Australia. Its natural habitats are subtropical or tropical dry shrubland and subtropical or tropical dry lowland grassland. It is named for Swedish zoologist Eric Mjöberg.-References:* Hero, J.-M. & Roberts,...

 (Uperoleia mjobergi), as they inhabit similar areas it is possible to speculate that the holotype of the Marbled Toadlet was mistake for a Mjoberg's Toadlet.

Ecology and behaviour

Due to lack of records on this species habitat and behavioural characteristics have been difficult to assess. The frog is likely to breed in permanent and semi-permanent still water bodies in the Kimberly region.

This species was once though to be widespread across eastern New South Wales

New South Wales

New South Wales is a state of :Australia, located in the east of the country. It is bordered by Queensland, Victoria and South Australia to the north, south and west respectively. To the east, the state is bordered by the Tasman Sea, which forms part of the Pacific Ocean. New South Wales...

, but due to the similarity of frogs within the Uperoleia genus it was most likely confused with Smooth Toadlet

Smooth Toadlet

The Smooth Toadlet is a species of Australian ground-dwelling frog native to the coast and west of the ranges of south-east Queensland, all of eastern New South Wales and north-eastern Victoria.-Physical description:...

.