Dietzel Gyula: A Bakony természettudományi kutatásának eredményei 21. - A Bakony nappali lepkéi. (45 színes fotóval) (Zirc, 1997)

Angol nyelvű összefoglaló

THE BUTTERFLIES OF THE BAKONY REGION RED DATA BOOK OF RHOPALOCERA The following paper is an extract from part of the combined works of the Bakony Natural Aspect Program. The program which started in 1962 was inspired by Dr. Jend Papp of the Bakony Museum at Veszprém who's aim was to document all the flora and fauna of the region. This paper deals specifically with the butterfly species that occur within the Bakony region and the many changes that have taken place over the past forty years. Mankind's effect on the area's environment has resulted in many species becoming rare and in some cases extinct. Recent efforts by the environmental movement has raised the public's awareness in respect to conservation and it is hoped that new measures to help safeguard the natural resource of the Bakony will soon come into effect. GEOGRAPHICAL SURVEY OF THE BAKONY REGION The Region's boundaries: Mezőföld, Fieldland and Lake Balaton in the South and Southeast - Mdr's Ditch in the East and Northeast - the Kisalföld/Zala River Valley in the North and Northwest. Butterfly habitats existing within these areas are very diverse. Geologic uplifting followed by subsequent environmental erosion has created a wide range of butterfly habitats. ZOOGEOGRAPHICAL SURVEY OF THE BAKONY REGION The area can be divided into five subregions: The Northern Bakony This mountainous region rising to an altitude of 600 metres has an average rainfall of 700 mm spread throughout the year, with only a short summer dry spell. Fraxinus, Carpinus, Acer and Ulmus are present but Fagus forest dominates most of this region. The southern slopes not surprisingly harbour the greater number of species. Some of the more interesting butterflies that have been recorded over the past thirty years include Nymphalis antiopa LINN., Lycaena hippothoe sumadiensis SZABÓ, Lycaena dispar rutilus WERNB., Colias chrysotheme ESP, Lysandra bellargus ROTT., Apatura iris LINN, and Apatura ilia SCHIFF. During one of his many field trips the author discovered a colony of Maeulinea xerophila on the Hárskút Plateau. Polygonia l-album ESP, Nymphalis xanthomelas SCHIFF, Hipparchia (Eumenis) statilinus HUFN. and Colias myrmidone ESP. were recorded during the 1950's but have since become extinct. The Eastern Bakony With a maximum altitude of 400 metres this area is much drier than its Northern part with less annual rainfall. Although predominately forest there are some areas of open hillsides where xerothermic plants thrive on limestone soil. Since 1940 extensive research has been undertaken in this area by a number of Hungarian entomologists namely Miklós Nyírd, László and Kálmán Szedke. Several interesting species have recently been discovered by the author from this region including Pieris ergane HBN. first noted in the Esztergáli Valley in 1993 and Argynnis pandora SCHIFF, which was found on Mt. Papod during the summer of the same year. Libythea celtis LAICH, a butterfly associated with the Mediterranean zone has been recorded by Miklós Nyí-