Abstract
Unknown Noctuidae moth was captured from several golf courses in the west district of Shizuoka prefecture. This moth was identified Spodoptera cilium Guenée. The external morphology of S. cilium was similar to S. depravata. Moth of S. cilium possessed gray fore wings with small white spot. Larvae of S. cilium possessed darker crescent spot each segment of dorsal aspect of abdomen. Head capsule of 1st instar larvae of S. cilium was black, however S. depravata has light brown head capsule. Developmental rate of S. cilium was shorter than that of S. depravata under 25°C, 16L: 8D condition. S. cilium can eat and grow to feed Cynodon dactylon that S. depravata is impossible to feed. These results indicated S. cilium would be made serious damage to turfgrass of golf courses.
