S. Mahunka szerk.: Folia Entomologica Hungarica 50. (Budapest, 1989)

finite oriental infiltration. Many species are in common with Japan and some genera comprise mainly Indomalayan species with a few Korean and Japanese representatives (e. g. the tenebrionid genus Plesiophthalmus). Paekdu-san is an extinct volcano in the Chinese-Korean border, with a deep lake (Chon-ji) in the crater. The highest point of the rim of the crater is the Changgun Peak (2,750 m). This mountain is the most elevated part of Chahgpai-shan (the majority of this range is situated in China). The vegetation of the Paekdu-area is predominantly a taiga-like in the Eurasian temperate zone. These forests consist of mainly Larix olgensis mixed with various Abies and Picea species as well as Betula pendula. Clearings and lanesides are very rich in shrubs and herbs in full bloom; deeper places abound with cool peatbogs. The blossoming plants were visited by many beetles, for instance Cephaloon (Cephaloidae), Pity lu s (Oedemeridae) and various longicorns (Cerambycidae) among which Brachyta (=

Evodinus) kraatzi was by far the commonest. Many large ticks frequently attacked us. We had a good experience on the zonation of mountain vegetation. The tall, dense forest becomes lower and sparser then disappears at 2 000 m above sea level. The treeless grassland zone is set with flowering dwarf shrubs and perennial herbs of brilliant colour from about 2 500 m to the peak, only lichens and scattered clusters of grass and a dwarf Salix variegate the barren rocks and the rubble of obsidian. A fair number of beetles (mainly Carabidae and Curculionidae) and some centipedes were found beneath stones of the alpine grassland and even on the peak we have captured an ichneumonid wasp. A thorough evaluation of the collected materials should be a future task. A total of 2 606 beetle specimens have been pinned (a lot of specimens belonging to common species were let fly away in the field*. Of Lepidoptera, noctuids and other nocturnal groups are underrepresented, but rare and interesting diurnal butterflies were captured. As for Hymenoptera, rather few Ichneumonoidea and a fair number of Aculeata were gathered and in the Paekdu area we found many sawflies iSymphyta*. Other arthropod groups were collected in a modest number. All specimens of amphibians and reptiles have already been identified by Dr. Z. Korsós - their names are mentioned in the list of localities. ACKNOWLEDGEMENTS Our expedition was made possible within the framework of an interstate agreement between the Hungarian and the Korean Academies of Sciences. Dr. Hwang Song Rin, Head of the Invertebrate Taxonomy of the Zoological Institute in Pyongyang organized our trips and did very much during the collecting. Dr. Pak Hyong Son of the Botanical Institute was our botanist leader and at the same time the Russian interpreter. We are greatly indebted to both of them for doing their best in order to the expedition will be successful. Furthermore, we thank Dr. Hwang Chon Bok (Kim II Sung University, Pyongyang) for many advices and his help during the planning of the expedition. English equivalents of some collecting localities The subsequent translations have been submitted according to Anonymus (19 81) and Pak Hyong Son (pers. comm). Names omitted from this list are untranslatable or their appropriate equivalents have not been found yet. Pyongyang City Daesong-san Michon-ho Ryongak-san Castle Hill Mts. Nice Sky Lake Dragon Bone Mts. Kangwon Province Kumgang-san Kuryong-popo Manmul-san Okryudong Onjong-ri Samil-po - Diamond Mts. - Nine Dragons Waterfalls - Rocks of Ten Thousand Features - Jade Stream Valley - Hot Springs Village - Three Days Lagoon