Leach, J.G. 1940 . Insect Transmission of Plant Diseases. McGraw-Hill New York; London 615 pp.

Notes: Among the scale species discussed in the context of virus transmission are Ceroplastes floridensis, Dactylopius citri, Lecanium spp., Phenacoccus gossypii, Pseudococcus brevipes, P. citri, P. longispinus and Saissetia oleae.