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

Angol nyelvű összefoglaló

now protected in Hungary. Its survival may be linked to the butterfly's ability to stagger its emergence and occasionally overwinter for two years in the pupal stage. Protected fauna. Status in the Bakony: 4. Zerynthia polyxena (DENIS et SCHIFFERMÜLLER, 1775) Southern Festoon (Map 5, Item 4) Flying from the end of April through until mid May this Pontomeditteranean species is an extremely rare and local butterfly in the Bakony Mountains. Its biotopes are very restricted and at present endangered. Some years ago healthy populations could be encountered around Pécsely and Öreg-hegy in the Balaton Highlands but due to deep ploughing techniques and bushfires many of the areas where the butterfly's foodplant Aristolochia clematiiis once flourished have been destroyed. A small localised population was discovered in the Szentgál Mountains during the 1970's but this population was wiped out by a forestry management programme in the 1980's. Protected fauna. Status in the Bakony: 1. II. Family: PIERIDAE Pieris ergane (GEYER, 1828) Mountain Small White (Map 6, Item 7) This species is on the wing from late April until late August in three generations. It has been recorded from the Southern slopes of the Várpalota Plateau (Eastern Bakony) and in the Balaton Highlands flying at moderate/high altitudes on dolomite and limestone terrain. In addition to these well known localities the author has recorded specimens from the Southern valleys of the Northern Bakony and on Mt. Kab, Mt. Vár and near Hidegkút in the Southern Bakony. In the 1970's this species was relatively common but numbers have fallen, air pollution and the expansion of human activities in the area are the probable causes. Protected fauna. Status in the Bakony: 3. Colias myrmidone (ESPER, 1781 ) Danube Clouded Yellow (Map 5, Item 15) A bivoltine species flying in May/June and July/August. This is one of Hungary's most endangered butterflies. Thirty years ago C. myrmidone was not uncommon in several sandy areas in the Hungarian Lowlands and on the Western border. The only specimens from the Bakony were collected at Fenydfd by Pál Tallds nearly 40 years ago. Bauxite mining and forest management are believed to be the cause for this species' extinction in our region. Protected species. Status in the Bakony: 0. Colias chrysotheme (ESPER, 1781) Lesser Clouded Yellow (Map 5, Item 17) A mesoxerophilic species associated with very dry dolomite Steppe fauna. Its range extends from the Eastern Bakony to Padragkút in the West. Four generations have been reported during the year. First brood specimens fly as early as April 20th while second generation specimens can be seen in mid June. The typical summer generation flies at the end of July into August and the autumn generation (usually the smallest) flies in late September. It is locally common in several areas including Hajmáskér, Öskü, Márkó, Mt. Kab, Mt. Eduard and the