BioStor
 | Class I, Hexapoda. Order II, Coleoptera. New genera and species of Coleoptera C Schaeffer (1904) Journal of the New York Entomological Society 12: 197-236 |
 | Studies of the North American weevils belonging to the superfamilty Platystomoidea W Dwight Pierce (1931) Proceedings of the United States National Museum 77(2840): 1-34 |
| Studies on the North American weevils W Dwight Pierce (1931) Proceedings of the United States National Museum 77(2840): 1-45 |
 | Checklist of the coleopterous insects of Mexico, Cantral America, the West Indies, and South America. Part 5. Richard E Blackwelder (1947) Bulletin of the United States National Museum 185: 765-925 |