Blumberg, D., & Swirski, E. 1984 Response of three soft scales (Homoptera: Coccidae) to parasitization by Metaphycus swirskii.. Phytoparasitica 12: 29-35.

Notes: Protopulvinaria pyriformis, P. mangiferae and Coccus capparidis studied; C. capparidis considered most suitable for successful development of M. swirskii for future use as biological control agent.