Onthophagus difficilis Mulsant, 1842 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Arthropoda class Insecta order Coleoptera family Scarabaeidae genus Onthophagus species Onthophagus vacca Name Homonyms Onthophagus difficilis Le Guillou, 1844 Onthophagus difficilis Mulsant, 1842 Onthophagus difficilis Walker, 1858