Clausen, C.P. 1956 Biological control of insect pests in the continental United States.. United States Department of Agriculture Technical Bulletin 1139: 1-151.

Notes: Insects reviewed include Aonidiella aurantii, A. citrina, Aspidiotus destructor, A. perniciosus, Ceroplastes cirripediformis, Coccus magnoliarum, Eriosoma lanigerum, Gossyparia spuria, Icerya purchasi, Lecanium corni, L. kunoensis, Lepidosaphes beckii, L. ficus, L. gloverii, Parlatoria oleae, Pseudaulcaspis pentagona, Pseudococcus adonidum, P. brevipes, P. citri, P. comstocki, P. gahani, P. maritimus, Saissetia oleae and S. nigra.