BioStor
 | Some new and noteworthy Aphidae from western and southern South America (Hemiptera-Homoptera) E O Essig (1953) Proc. Calif. Acad. Sci., San Francisco 28: 59-164 |
 | Keys to species of the genus Picturaphis (Homoptera: Aphididae) with descriptions of new species Cermeli and C F Smith (1979) Proceedings of the Entomological Society of Washington 81: 611-620 |