Abstract
The growth response to temperature and the photoperiodic induction of pupal diapause were investigated in the introduced butterfly, Sericinus montela, to know the adaptability of physiological characteristics to seasonal environmental changes. Threshold temperatures were about 12℃, and temperature accumulations in degree-days were 82 for egg, 195 for larva and 109 for pupa. Diapause induction was regulated by photoperiod during the larval stage, and the critical photoperiod was close to 13 hr 45 min. The photothermographic analysis showed that the life cycle of S. montela was in harmony with the seasonal environmental changes of Tokyo. In conclusion the trivoltine area in the Korean Peninsula was inferred most likely it's orginal locality.
