Ritchie, A.H. 1935 Report of the entomologist, 1934.. Annual report (Tanganyika Department of Agriculture) 73-83.

Notes: Scale species mentioned include Asterolecanium coffeae, Pseudococcus citri, Cerococcus hibisci, Ceroplastes vinsonioides, C. destructor, C. zonatus, Saissetia coffeae, Orthezia insignis, Hemiberlesia lataniae, Lecanium somereni, Pinnaspis chionaspiformis and Phenacoccus iceryoides.