Watson, G.W., & Cox, J.M. 1990 Identity of the African coffee root mealybug, with descriptions of two new species of Planococcus (Homoptera: Pseudococcidae).. Bulletin of Entomological Research 80: 99-105.

Notes: Abstract: Planococcus fungicola, new sp. (from Kenya), P. radicum, new sp. (from Nigeria & Tanzania) & P. lilacinus (Cockerell) described; hosts; biology; synonymy.