Lo, P.L., Blank, R.H., & Penman, D.R. 1996 Phenology and relative abundance of Ceroplastes destructor and C. sinensis (Hemiptera: Coccidae) on citrus in Northland, New Zealand.. New Zealand Journal of Crop and Horticultural Science 24: 315-321.

Notes: The main scale insect pest in citrus orchards was Ceroplastes destructor although C. sinensis was more widespread; first and second instars vulnerable to adverse weather and predation and their longer duration in C. sinensis may partly account for its lower abundance; recomendations for timing of insecticides.