BioStor
 | The genus Pseudococcus in California (1909) Pomona Journal of Entomology 1: 35-46 |
 | New Aphididae from California Swain (1918) Transactions of the American Entomological Society 44: 1-23 |
 | 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 |