Abstract:
Two new oribatid species belonging to Family Oppiidae Grandjean, 1951 are described from soils of central east Argentina (biogeografic Province of Pampa): Graptoppia (Graptoppia) alzueti n. sp. and Brachioppiella (Gressittoppia) incisa n. sp. Graptoppia (Graptoppia) pentagona is proposed as a new combination for Oppia pentagona Alzuet, 1981.