Flanders, S.E. 1940e Biological control of long-tail mealybug.. Citrus Leaves 20(2): 3-5.

Notes: Pseudococcus longispinus populations have been of little importance because of the introduction in 1914 of Leptomastidea abnormis from Sicily and in 1927 of Coccophagus gurneyi and Tetracnemus pretiosus from Australia. P. longispinus suddenly assumed outbreak proportions in 1933 as a major pest of avocado. Additional parasite introductions were needed for control.