Abstract: [Objective] Protapanteles lamborni is a dominant larval parasitoid of Crypsiptya coclesalis. Understanding of biological habits of P. lamborni would provide the fundamental information for biological control of C. coclesalis.[Method] In this paper, the field investigation and laboratory tests were used to study the parasitic characteristics of P. lamborni.[Result] Result showed that adults of P. lamborni mainly emerged between 8:00 and 10:00 am, so that they could copulate and lay eggs on the same day. The adult could perform both amphigony and arrhenotoky. In the range of 16℃ to 32℃, the adult development period at 16℃ lasted maximally for 6.65±0.24 days, however it could be 13.35±0.37 days if 10% honey solution was added as supplementary nutrition.[Conclusion] P. lamborni had an increasing parasitic rate with generations of the host of C.codesalis, and it mainly parasitized the third or fourth instar larvae of C. codesalis. Within a certain range of temperature, the developmental duration of P. lamborni decreased with the increase in temperature, but the adults could extend their longevity significantly if being supplied with 10% honey solution as supplementary nutrition.

Key words: Crypsiptya coclesalis, parasitoid, biology, Protapanteles lamborni, supplementary nutrition