Savaria - A Vas Megyei Múzeumok értesítője 24/2. (1997) (Szombathely, 1997)

Radchenko, G. Alexander: The ant fauna of Őrség, Western Hungary (Hymenoptera: Formicidae)

SA VARIA, 24/2 (Pars historico-naturalis) Cf+thDf thDf Type of forest Fig. 2. Ecological character of the forest-dweller ant fauna of Őrség (Cf- coniferous forest, thDf- temperate humid deciduous forest, dDf - dry deciduous forest) The poorest fauna inhabits fir and beech forests (up to 10 species). In oak and oak-pine forests the number of species sharply increase and can reach, utmost for the given geographical region, 25-30 species. As a whole, the ant fauna of meadows is poorer — about 20 species, but the density of filling up meadow ecosystems by species can reach here up to 15 species in one biotope. The most dry and warm sites of meadows are inhabited by species, which are characteristic features of the steppe zone. From the zoogeographical point of view the ant fauna is richer than that from the ecological one. Ant species found in the investigated region belong to 9 Zoogeographie complexes: 1. Transpalaearctic [T] — species, widespread in several natural zones from Atlantic to Pacific ocean: the part of them is widespread predominantly in the northern half of the Palaearctic (for example, L. acervorum, L. muscorum, M. rubra, M. ruginodis, L. niger, F. polyctena etc.), and part — in south (Г. caespitum, L. emarginatus, L. umbratus, F. pratensis etc.). 2. Boreal [B] — similar to northern variant of the Transpalaearctic species, inhabit almost exclusively tajga or mountain forests and meadows. 3. Euro-Westsiberian [EW] — species are widespread in forest zone of Europe and Western Siberia, where inhabit mainly deciduous and mixed forests. 4. European forests [EF] — species are widespread in zone of deciduous forests of Europe, on east up to Ural. 5. South-European [SE] — species are widespread predominantly in South and Central Europe and ecologically are connected with southern deciduous forests. 89