Williams, D.J. 1970 The mealybugs (Homoptera, Coccoidea, Pseudococcidae) of sugar-cane, rice and sorghum.. Bulletin of Entomological Research 60: 109-188.

Notes: Discusses taxonomy of 39 species of mealybugs; describes 27 species, eight of them as new; key to the 39 species; host and distribution; synonyms; new combinations.