| Summary: | On distribution and morphology of some Onthophagus species in Switzerland (Coleoptera: Scarabaeidae). – On the basis of 1097 specimens from 12 collections, the distribution of ten dung beetle species of the genus Onthophagus (Scarabaeidae) in Switzerland is compiled and shown in distribution maps: O. taurus-group: O. illyricus, O. taurus; O. fracticornis-group: O. fracticornis, O. opacicollis, O. similis; O. ovatus-group: O. baraudi, O. grossepunctatus, O. joannae, O. ovatus, O. ruficapillus. New characters of the female genitalia allow species identification of O. fracticornis, O. similis, and O. ruficapillus. Reduced male characters of a small O. gibbulus are described.
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