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Eumetazoa (metazoans)- 
    
Bilateria (bilaterally symmetrical animals)- 
    
Protostomia (protostomes)- 
    
    
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Arthropoda (arthropods)- 
    
    
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Order Coleoptera- 
    
Superfamily Scarabaeoidea- 
    
Family Scarabaeidae- 
    
Genus Onthophagus- 
    
Species Onthophagus orpheus- 
        
Infraspecies Onthophagus orpheus subsp. canadensis
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Infraspecies Onthophagus orpheus subsp. pseudorpheus
 
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