Effects of repeated haemolymph withdrawals on haemocyte counts and moulting in lemon-butterfly, Papilio demoleus L.

Total and differential haemocyte counts following repeated haemolymph withdrawals were made in V instar larvae of P. demoleus. While total count showed a steady reduction reaching its lowest in prepupal stage, much variation was observed in the relative percentage of various cell types. Further, the repeated removals of haemolymph from V instar larvae and pupae affected imaginal moulting and lengths of body and wings in adult butterflies.