Abstract
The larvae of Autographa mandarina were occasionally found to feed on leaves of the white clover in the mountainous area of Iwate Prefecture. The adults were caught in late June to early July and again in August. Under the illumination of 16 hours per day, the total duration for immature stages lasted about 33, 37 and 56 days in 26, 23 and 18°C, respectively. The highest temperature tested caused a considerable larval mortality. When exposed to the day-length of 8 hours in 23°C, the larval growth was remarkably suppressed in the older instars, giving rise to no pupation. A bivoltine life cycle with hibernation in the older larval stage was suggested for the species.
