S. Mahunka szerk.: Folia Entomologica Hungarica 55. (Budapest, 1994)

In the second week, at the morning of the day after our arrival to Cheju, a strong south-western tempest (the edge of a typhoon) reached the region with huge wind and heavy rainfall but the temperature remained relatively high and several migrants were observed and collected during that night. The weather became colder in the subsequent days and the stormy wind made the night collectings almost fruitless; and new snow appeared on the Halla-san over 1600 m during these days. The heavy cold front changed at the evening when we arrived to the Paekun-san Mts and the following two nights were excellent for collecting (the previously fallen snow melted during the night!), this was the most successful period of our field work. We had collected in every place at a white screen illuminated with 125 W mercury vapour lamp supplied by a Honda generator and with two portable light-trap equipped with 4 and 6 W UV-tubes; the sugar baits were also used in every night. The flight to the sugar baits was fluctuated strongly, depending on the aspects, the actual weather conditions and the habitats. It is worth to mention that in October 1987 in North Korea the overwhelming majority of the specimens was collected by light and the number of specimens found on baits was not higher than a dozen altogether on the twenty collecting nights. In spite of this experience, in October-November 1993, about two-third of the whole nocturnal material was collected by sugar baiting. Our original plan was to study the last aspects of the late autumnal fauna of Korea but the selected period, on our surprise, was not late enough that year as the late autumnal fauna had started to appear after the strong cold front, at the beginning of November. The composition of the fauna, displayed in the checklist of Noctuidae and under the actual locality numbers, shows that most members of the early autumn aspects had been found (although they were only rarely freshly emerged and often very worn) while the taxa being typical of the latest aspects (e.g. Conistra, Eupsilia, Jodia, Lithophane, etc.) were represented only seldomly in October and appeared in larger numbers in November. ACKNOWLEDGEMENTS We would like to express our thanks to the Hungarian Academy of Sciences, Budapest and the staff of the Center for Insect Systematics, Chuncheon for their kind support of the joint expedition, especially to Prof. Dr K. T. Park, the leader of the joint research project who provided excellent conditions for our work in Korea. Our sincere thanks to the colleagues Dr B. K. Byun and Mr R. D. Kwon (Chuncheon), Dr S. B. Ahn (Suweon), Prof. Dr J. C. Paik (Suncheon) and the colleagues of the Cheju Museum for their very important help in every respect during our stay in the Republic of Korea. The research programme on the taxonomy and zoogeography of Noctuidae was partly supported by the Hungarian Research Fund (OTKA 3181).