Onthophagus adelaidae is a species of beetle discovered by Frederick William Hope in 1846.Harold E.von (1869) Tabula synoptica specierum generis Onthophagus ex Australia, Coleopterologische Hefte 5:78-87 No sub-species are listed at Catalogue of Life.Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (red.) (13 August 2011). ”Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist.”. Species 2000: Reading,
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