Opisotretidae

Opisotretidae is a family of millipedes belonging to the order Polydesmida.

Genera:
 * Carlotretus Hoffman, 1980
 * Corypholophus Attems, 1938
 * Martensodesmus Golovatch, 1987
 * Nepalotretus Golovatch, 1987
 * Opisotretus Attems, 1907
 * Opisthoporodesmus Silvestri, 1899
 * Retrodesmus Chamberlin, 1945
 * Solaenaulus Attems, 1940