BioStor
 | Description of North American species of Coleoptera, presumed to be undescribed Haldeman S.s. (1843) Proceedings of the Academy of Natural Sciences of Philadelphia 1: 298-304 |
 | Descriptions of new species of Coleoptera of the United States Melsheimer F.e. (1845) Proceedings of the Academy of Natural Science of Philadelphia 2: 134-160 |
 | Beiträge zur Kenntniss einiger coprophagen Lamellicornien (Achtes Stuck) E Harold (1874) Berliner entomologische Zeitschrift. Berlin 18: 177-208 |
 | Studies on the genus Aphodius of the United States and Canada (Coleoptera: Scarabaeidae). VII: Food and habitat; distribution; key to eastern species R D Gordon (1983) Proceedings of the Entomological Society of Washington 85: 633-652 |