Arandai is a dialect cluster of New Guinea

New Guinea

New Guinea is the world's second largest island, after Greenland, covering a land area of 786,000 km2. Located in the southwest Pacific Ocean, it lies geographically to the east of the Malay Archipelago, with which it is sometimes included as part of a greater Indo-Australian Archipelago...

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The treatment at Ethnologue

Ethnologue

Ethnologue: Languages of the World is a web and print publication of SIL International , a Christian linguistic service organization, which studies lesser-known languages, to provide the speakers with Bibles in their native language and support their efforts in language development.The Ethnologue...

appears to be inconsistent. ISO codes are assigned to two languages, Arandai and Kemberano, also known as Arandai. They are said to have 85% lexical similarity, which would make them dialects of one language. However, the two dialects given for Arandai, also called Kemberano and Arandai ( Tomu and Dombano), are said to have only 71% lexical similarity, making them different languages. Dialects of Kemberano (Weriagar) are listed as Weriagar (Kemberano) and Barau.

Additional alternative names of Arandai/Kemberano (Dombano–Tomu) are given as Jaban / Yaban, Sebyar, Sumuri. Additional alternative name of Kemberano/Arandai (Barau–Weriagar) is given as Kalitami.

Linguasphere 2010 makes a more consistent distinction:

20-HD Tomu–Kemberano

20-HDA Tomu–Arandai; includes Yaban, Sebyar

20-HDA-a Tomu

20-HDA-b Arandai (Dombano)

20-HDB Kemberano–Barau

20-HDB-a Kemberano (Kalitami)

20-HDB-b Weriagar

20-HDB-c Barau

All five varieties are here treated as distinct languages.