The author presents an introduction to the characters of the family Tarsonemidae and relates following species from the State of São Paulo: Polyphagotarsonemus latus (Banks, 1904) Beer & Nucifora, 1965; Tarsonemus setifer Ewing, 1939; Steneotarsonemus ananas (Tryon, 1898) Beer, 1954; S. pallidus (Banks, 1901) Beer, 1954; S. hyaleos Beer, 1954, and Rhynchotarsonemus sp., and Neotarsonemus latus from the State of Paraná. Keys to the genera, and species of Steneotarsonemus are given.