Smith, D. 1978a Biological control of scale insects on citrus in southeastern Queensland. II. Control of circular black scale Chrysomphalus ficus Ashmead by the introduced parasite, Aphytis holoxanthus De Bach.. Journal of the Australian Entomological Society 17: 373-377.

Notes: Scale infestation was reduced from 6.5 to less than 0.01 adult females per fruit within six to nine months of its establishment and were maintained at these levels for duration of study.