The known geographic distribution of Siagonodon brasiliensis is restricted to three locations in the Brazilian Cerrado, in Piauí, Bahia and Minas Gerais states. I present here a new record for this species in Minas Gerais. One specimen of S. brasiliensis was collected at Fazenda Sant’Ana, municipality of João Pinheiro, northwest Minas Gerais, on a plateau area with sandy soil covered with Cerrado stricto sensu. The available information suggests that this species may be specialized in that kind of habitat. Pholidosis, morphometric and color characters of the collected specimen are presented.