A hypothetical Wutana language was mentioned in early editions of the 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...

, but has now been removed. The inclusion of Wutana in the Ethnologue was based on two sentences in Temple (1922):

There are 1,075 Wutana in Bauchi Emirate

Bauchi Emirate

The Bauchi Emirate was founded by Fula in the early 19th century in what is now Bauchi State, Nigeria, with its capital in Bauchi. The emirate came under British "protection" in the colonial era, and is now denoted a traditional state.-History:...

. (p. 367)

and

105. Wutana, population 1,075 in Bauchi Emirate. (p. 431).

Roger Blench

Roger Blench

Roger Blench is a British linguist, ethnomusicologist and development anthropologist. He has an M.A. and a Ph.D. from the University of Cambridge and remains based in Cambridge, England...

also cites Temple in his Atlas of Nigerian languages. Nothing is known of this 'language' apart from its name and location, including whether it even exists.