Das, S.C., Borthakur, M., & Gope, B. 1988 Bio-ecological studies on Chilocorus circumdatus Sch. an efficient predator of Black Scale, Chrysomphalus aonidium (=C. ficus) Ashm.. Two and a Bud 35(1-2): 15-18.

Notes: Abstract: Biological agent to control Black Scale of tea discussed; other natural enemies listed. Keywords: biological control.