Hattingh, V., & Samways, M.J. 1991 Determination of the most effective method for field establishment of biocontrol agents of the genus Chilocorus (Coleoptera: Coccinellidae).. Bulletin of Entomological Research 81: 169-174.

Notes: Abstract: Chilocorus nigritus is an economically important biocontrol agent of red scale, Aonidiella aurantii on citrus in southern Africa; C. bipustulatus controls A. aurantii on citrus in Israel. Other species mentioned in relation to Chilocorus are Parlatoria oleae, Aspidiotus nerii and Asterolecanium species.