BioStor
 | The North American Genera of Calyptrate Muscidæ. Paper III C H Tyler Townsend (1892) Transactions of The American Entomological Society 19: 273-278 |
 | The type-species of the North American genera of Diptera D W Coquillett (1910) Proceedings of the United States National Museum 37: 499-647 |
 | Systematics of the Nearctic Ptilodexia Brauer and Bergenstamm (Diptera: Tachinidae) (1979) Proceedings of the California Academy of Sciences 42(1): 1-55 |