Studies on Palaearctic Onthophagus associated with burrows of small mammals. V. A new species of the semicornis group from south-central Iran (Coleoptera: Scarabaeidae: Scarabaeinae: Onthophagini).
A new Iranian, probably pholeophilous species of the scarabaeine genus Onthophagus Latreille, 1802, O. roessneri n. sp., is described, illustrated, and its placement in the semicornis group within the subgenus Palaeonthophagus Zunino, 1979 is discussed. A key to the species of the group is presented.