Zocci

Zocci were the species to which Bannakaffalatta belonged. They were small humanoids, with red spiky heads. (DW: Voyage of the Damned)

The Zocci are related to the Vinvocci. (DW: The End of Time)

Behind the Scenes
The name of Bannakaffalatta's species was never specified in Voyage of the Damned but was identified by Russell T Davies. The name was confirmed on-screen in The End of Time, by a member of a similar species.