Doutt, R.L. 1951 Biological control of mealybugs infesting commercial greenhouse gardenias.. Journal of Economic Entomology 44(1): 37-40.

Notes: A very heavy infestation of Pseudococcus citri on commercial greenhouse gardenias was reduced to a low level and maintained under control by introducing several species of parasites and predators. The most effective species were Exochomus flavipes, Anagyrus kivuensis and Chrysopa californica. The method was found to be practical if used in conjunction with an acaricide which is innocuous to beneficial insects. Under these conditions, biological control of Saissetia hemisphaerica also occurred as a result of the parasitic activities of Metaphycus helvolus and Encyrtus infelix.