The Ritharrngu (Ritharrà Âu, Ritharngu) and also known as the Diakui (and variant spellings), are an Aboriginal Australian people of Arnhem Land in the Northern Territory, of the Yolà Âu group of peoples. Their clans are Wagilak and Manggura (of the Dhuwa moiety), and Ritharrà Âu (of the Yirritja moiety).
The Ritharrà Âu language is a Yolà Âu Matha language. In modern times Ritharrà Âu has been observed to be undergoing significant structural changes away from Yolà Âu, with innovations in its morphosyntaxis through assimilation of features characteristic of Nunggubuyu and à Âandi.
The Ritharrà Âu are estimated to have landed estates extending over approximately east and south of the Arafura Swamp. They also inhabit the area east of the Goyder River, whose tributaries' headwaters form their southernmost frontier. They also inhabit the area around the Mitchell Ranges and the Koolatong River headwaters.
Wagilak are amongst the clans living at à Âukurr (formerly Roper River Mission).
The Ritharrà Âu are organised into three clans, two pertaining to the Dhuwa moiety and one to the Yirritja moiety of the Yolà Âu people.
Dhuwa moieties
Yirritja moiety
Source:
At à Âukurr: