It was erected by Pius VI on 19 December 1791, and comprises the former state of Bermúdez, districts of Nueva Esparta and Guayana, and territories of Amazonas, Caura, Colón, Orinoco, and Yuruary, in the south and east of Venezuela.
In Venezuela, Sanumá is spoken in the vicinity of the Caura and Ervato-Ventuari Rivers in Venezuela, and the Auari River and Roraima region in Brazil.