Abstract
Mating behavior and oviposition of A. yamamai moths were investigated under natural day-length and at room temperature using caged individuals. Virgin females took calling posture (extrusion of the abdominal tip) throughout night. Calling occurred even in 0-day-old females. In this species, presence of oak leaves was not required for the induction of calling, unlike in the case of A. polyphemus. Excited males caught the abdomen of females from the ventral side, and copulated with the females. Throughout the period of the first three days after emergence, virgin females showed high activity of copulation, whereas copulation activity of males was high only on the next day of emergence. Females which had copulated on the next or third day of emergence showed a great increase in oviposition rate for the following day, whereas two days were required for such increase in the females which had copulated on the day of emergence.
