Post Refrigeration Viability of Pteromalus puparum (Hymenoptera: Pteromalidae) Prepupae within Host Chrysalids

Pteromalus puparum (L.) prepupae within host Pieris rapae (L.) chrysalids could be stored at 10° C and 80% R. H. for periods of up to 15 months and still produce viable progenies. The mean number of P. puparum adults emerging per chrysalis was not different between four months of cold storage and the non-refrigerated control, but declined progressively with duration of cold storage thereafter.