Griffiths, J.T., & Stearns, C.R. 1947 A further account of the effects of DDT when used on citrus trees in Florida.. Florida Entomologist 30(1/2): 2-8.

Notes: Increases in population of Chrysomphalus aonidum were reported following the application of DDT to citrus trees in Florida due to the elimination of their parasites and predators.