Abstract
The cytology of Rastrococcus iceroyides (Green) has been worked out. The diploid number of chromosomes in both the sexes of this species is 10. In the male, two sets of chromosomes have been witnessed: 5 chromosomes are euchromatic and 5 other are heterochromatic in nature; and their differential behaviour during male meiosis has been discussed. The H-set has presented polymorphic shapes and configurations. Spontaneous chromosome fragmentation has also been observed and discussed.
