Ewart, W.H., & Metcalf, R.L. 1956 Preliminary studies of sugars and amino acids in the honeydews of five species of coccids feedings on citrus in California.. Annals of the Entomological Society of America 49: 441-447.

Notes: Honeydews of Icerya purchasi, Coccus hesperidum, Planococcus citri, C. pseudomagnoliarum and Saissetia oleae included in this study.