Abstract
Ten light traps were arranged in a line at regular intervals of 28.6m between two forests about 200m apart from each other. Comparison between the catches of moths by these traps was made. The catches were the greatest both in relation to the number of individuals and to the number of species within about 30m from the forest edge. It was considered that these peaks of the catches near or at the forest edge resulted from the flights of woody plant feeders from the forests. On the other hand, herb and grass feeders were collected almost uniformly among the traps in the field lying between the two forests. The traps at both extremities were set in the forest and the catches of these two traps were remarkably fewer than those of the other 8 traps. There were no species collected exclusively in the traps in the forests. From the above, it was considered that, for the study of moth community, a range of about 30m from the forest edge is the most suitable for the setting of light trap.
