Yuyu (Yirau) is an extinct language or

dialect cluster A dialect continuum or dialect chain is a series of language varieties spoken across some geographical area such that neighboring varieties are mutually intelligible, but the differences accumulate over distance so that widely separated varie ...

of southern

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 ...

. Walsh treats Yuyu as a language with

Ngawait The Ngawait, also spelt Ngawadj and other variations, and also known as Eritark and other names, were an Aboriginal Australian people of the mid-Riverland region, spanning the Murray River in South Australia. They have sometimes been referred to ...

Erawirung The Erawirung (Yirawirung, Jirawirung) people, also known as Yirau, Juju and other names, were an Aboriginal Australian people whose traditional territory was located in what is today the Riverland of South Australia. They consisted of sub-groups ...

Ngintait The Ngintait, or Ngindadj, are an Australian Aboriginal peoples of the northwest corner of the state of Victoria, and partly in South Australia. 9 people, all of one family, claim descent from the tribe, which was dispersed in the 19th century. La ...

, and

Ngarkat The Ngarkat is a recorded title of a tribal group from South Australia. The Ngarkat lands had linked the mallee peoples of Victoria and South Australia to the river peoples of the Murray River Murraylands. Ngarkat language has been loosely groupe ...

as dialects; Berndt and Berndt (1993) list those as dialects related to Yuyu.Bowern, Claire. 2011.
How Many Languages Were Spoken in Australia?
, ''Anggarrgoon: Australian languages on the web'', December 23, 2011
corrected
February 6, 2012)

References

Lower Murray languages Extinct languages of South Australia {{ia-lang-stub