James, B.C. 1987 The cassava mealybug Phenacoccus manihoti Mat-Ferr (Hemiptera: Pseudococcidae) in Sierra Leone: a survey.. Tropical Pest Management 33(1): 61-66.

Notes: P. manihoti is new to Sierra Leone where it has quickly achieved key pest status. All available cassava varieties are susceptible to the insect, and the damage is especially significant on the late planted crop. Biological control, for example, by ground release of exotic hymenopteran parasitoids in the dry season, is recomended as a long lasting strategy for control.