The names Alliphis siculus (Oudemans) and A. halleri (G. & R. Canestrini) (Acari: Eviphididae) have been widely used for mites that are common in agricultural soils and phoretic on dung beetles, especially in Europe. These names have sometimes been regarded as synonyms. However, examination of the type specimens of A. siculus showed that this species has often been misidentified. These two species differ in many ways, especially in characters of the dorsal idiosomal chaetotaxy. Both species are here re-described, and details are provided of how they may be distinguished, most easily by the lengths of the setae on the dorsal shield. Alliphis halleri is widespread in Europe, North Africa, and the United States, while A. siculus is known only from Italy.