Frolov, A.V. 1997. Contributions to the knowlege of genus Aphodius from North Palaearctic. II. A. circassicus and A. lederi (Coleoptera: Scarabaeidae). Zoosystematica Rossica, 5(2): 277–280.
Aphodius circassicus Reitter and A. lederi Harold, closely related species from the Caucasus, were known by single specimens so far. Redescriptions of these rare species are given. The taxonomic position the species is discussed.