The present study is based on material collected during a two-month RussianEthiopian expedition in October and November 2011. An annotated checklist of identified oribatid mite taxa is presented. Two new oribatid mites of the family Oppiidae, Separatoppia concava, sp. nov. and Ramusella (Rectoppia) ginchiensis sp. nov., are described from moss of Cholomu forest (Southern Ethiopia). An identification key to all known species of Separatoppia is given. Eighteen species, 11 genera and two families are recorded for the first time from Ethiopia. The genus Furcoribula and species Trhypochthonius tectorum and Furcoribula furcillata are recorded for the first time from the Ethiopian region.