Lotkon defoliator, Cyclosia papilionaris Drury (Zygaenidae:Lepidoptera) is a major
insect pest of lotkon (Baccaurea ramiflora Lour.) in Bangladesh. The larva feeds on young
leaves and cause defoliation seriously affecting the growth of the tree. Description,
distribution, nature and impact of damage, host plants, life stages, number of
generation, seasonal abundance and management of the pest has been described. The
peak infestation occurred during July and August. The incidence is more acute in the
hilly areas than in the plains. The pest could be controlled by the foliar application of
malathion (Malathion 57 EC) at 0.1% concentration.