Fox-Wilson, G. 1939 Insect pests of the genus Rhododendron.. International Kongress fur Entomologie (Berlin) 7: 2296-2323.

Notes: Coccids are believed to have been exported from Holland and Japan into the U.S.; species mentioned include: Aspidiotus chipponsansensis, A. excisus, A. ficus, A. hederae, A. shakunagi, Ceroplastes rubens, Chrysomphalus aonidum, C. aurantii, Eriococcus azaleae, E. bezzii, Fiorinia horii, F. rhododendri, Icerya seychellarum, Phenacoccus azaleae, Pinnaspis rhododendri, Pseudaonidia duplex, P. paeoniae, Pseudococcus adonidum, P. azaleae, P. citri, P. lilacinus and P. maritimus.