The present study is based on oribatid mite material collected during a Russian-Ethiopian expedition in June 2013 from Ethiopia. We have registered 24 species, 20 genera and 16 families—an annotated checklist of identified taxa is presented. Suctobelbila dentata is recorded for the first time in the Ethiopian region; Tectocepheus velatus sarekensis is recorded for the first time in Ethiopia. A new oppiid species—Arcoppia(Wallworkoppia) minima sp. nov.—from litter of a Xerophitic forest is described. It differs from all known species of this subgenus by the medially concave rostrum (versus tripartite in the other species). An identification key to known species of Arcoppia (Wallworkoppia) is given.