BioStor
 | On American Aphids, with descriptions of a new genus and some new species (Homoptera, Aphididae) D Hille Ris Lambers (1974) Tijdschrift Voor Entomologie 117: 103-155 |
 | Adventive aphids (Hemiptera: Aphididae) of America north of Mexico (2006) Proceedings of the Entomological Society of Washington 108: 583-610 |