Richards, A.M. 1960 Scale insect survey on apples 1959-60.. New Zealand Journal of Agricultural Research 3: 693-698.

Notes: Records Quadraspidiotus perniciosus, Q. ostreaeformis, Lepidosaphes ulmi, Aonidiella aurantii, Parlatoria pittospori, P. virescens and Aspidiotus rapax from apples in New Zealand; first record for Q. ostreaeformis in New Zealand.