Etymology: The species is named after the type locality, São Gonçalo do Rio Preto, where the natives from this small city are called riopretano.
Original Type Locality: Male holotype from Parque Estadual do Rio Preto, São Gonçalo do Rio Preto, Minas Gerais, Brazil, 20–25 October 2010, G. Monteiro, F. Sá, W. F. Silva, J. P. L. Guadanucci leg. (CAD 422).
Two new species of the genus Tmesiphantes from Serra do Espinhaço, state of Minas Gerais are described. They comprise the first records of the genus outside the Atlantic Forest. Furthermore, the examination of all type material of the genera Tmesiphantes and Melloleitaoina, which have been suggested as sister groups, showed that the thickness of femur III, used to distinguish between them, shows a continuous variation, and the taxonomic usage of this character is discussed.
Studies on Neotropical Fauna and Environment 47: 139-145