Tóth Sándor szerk.: A Veszprém Megyei Múzeumok Közleményei 14. – Természettudomány (Veszprém, 1979)

DR. BENEDEK PÁL: A Bakony hegység kaparódarázs (Hymenoptera: Sphecoidea) faunájának állatföldrajzi vizsgálata

A ZOOGEOGRAPHICAL ANALYSIS OF THE SPHECOID (HYMENOPTERA: SPHECOIDEA) FAUNA OF THE BAKONY MOUNTAINS No more than 24 sphecoid species have been reported so far from the Bakony mountains, Central Transdanubia (MOCSÁRY 1900, BAJÁRI 1956, 1957a, 195 7b, MÓCZÁR 1958). However, in the last one and a half decade a large insect material has been accumulated out of the region containing some 2600 sphecoids. By indentifying this material and adopting literary data as well the author reports a total of 161 sphecoid species in'the mountains (Table 1). The sphecoid fauna of the mountains is fairly rich in species since some 60 per cent of the taxa known from whole Hungary being represented in it. There are two noteworthy findings, one of the reported species (Diodontus dahlbomi) being new to the fauna of the Carpathian Basin and an other one (Gorytes tumidus) new to Hungary. The sphecoid fauna of the Bakony mountains (Bakonyicum) is compared (Table 2) to that of localities in'the Great Hungarian Plain (Eupannonicum), North-western Hungary (Arrabonicum) and Southern-Transdanubia (Praeillyricum). The sphecoid fauna of the Bakony area is considered of no definite mountainous features indicating by the affinity both in ecological characteristics and distribution patterns of the reported species to the sphecoid fauna of the localities in the Arrabonicum containing lowland regions. At the same time, a high proportion of eremophilous taxa seems to indicate some relationships to the fauna of the localities in the Eupannonicum. The area of the Bakony mountains was divided into five zoogeographical subdistricts some years ago (PAPP 1968): 1. Balaton-Highlands, 2. Keszthely mountains, 3. Southern-Bakony, 4. Northern-Bakony, 5. Eastern-Bakony (Fig. 1). Due to the lack of definite geographical barriers within the Bakony mountains and of its relatively limited area the author emphasizes that the subdistricts can be characterized zoogeographically by an ecological analysis of their faunas (Table 4). The Tihany peninsula and the costal area between Balatonfűzfő and Kilián-telep have been found to be characterized by a conspicuously high proportion of eremophilous taxa mainly with Pontomediterranian an Holomediterranian distribution. It is concluded that this region (designated as "6. Mediterranian costal- region" in Fig. 1 and Table 4) represents a • new zoogeographical subdistrict, the mediterranian like summer climate of which provides much more favourable conditions for eremophilous and much less suitable bio topes for hylophilous ta-xa than other subdistricts of the mountains. In other aspects the earlier findings of PAPP (1968) have been supported. A szerző címe (Author's address):- • Dr. Benedek Pál (Dr. P. Benedek) MÉM. Növényvédelmi és Agrokémiai Központ H-1502 Budapest, XI. Budaörsi út 141-145. Postafiók 127 238