Uherkovich Ákos: A Villányi-hegység botanikai és zoológiai alapfelmérése (Dunántúli Dolgozatok Természettudományi Sorozat 10., 2000)

Ábrahám Levente: Alderfly (Megaloptera) and lacewing (Neuroptera) fauna of the Villány Hills, South Hungary. - A Villányi-hegység nagyszárnyú (Megaloptera) és recésszárnyú (Neuroptera) faunája.

ABRAHAM, L.: ALDERFLY AND LACEWING FAUNA OF THE VILLANY HILLS 251 Two rare species, Palpales libelluloides L. (STEINMANN 1967) and Libelloides macaronius Scop. (PONGRÁCZ 1914) were recorded in the Mecsek, the mountains closest to the studied territory, thus we paid great attention to finding reliable habitats and populations of these species. The main aim of the investigation on the flora and the fauna was to study the distribution and populations of different insect orders, especially that of the protected species, from a conservation point of view and to extend legal protection onto the whole territory. Material and methods For the surveying of the alderfly and lacewing fauna of the Villány Hills mainly two traditional sampling techniques were used: netting the foliage, and light trapping which had been productive methods in my earlier field works (ÁBRAHÁM 1995a, 1998). Beating the accessible branches of trees or reed and bulrush beds along the shore of water bodies provided me with a good source of material of alderflies and sponge flies. At the same time several collecting methods were used for recording lacewings. Most of the lacewing species have either nocturnal or crepuscular activity, i. e. they are on the wing at dawn and dusk (ÁBRAHÁM, VAS 1999). For recording lacewings a 160 W mercury bulb, HLMI type, and a 20 W "blacklight" tube were generally used on the suitable, warm evenings. Besides, at the same time three to four small light traps operating with 8 W blacklight tubes and portable batteries were installed in different habitats, not far from where my collecting devices operated, in the great variety of mosaic habitats of the Villány Hills. To record lacewings I used an 80 cm 0 net with a handle that could be extended to 4 metres in length just like a telescope, as part of the traditional methods of netting the foliage, herb layer and net-sweeping the grassland. In the course of this survey during the years 1999-2000, the lacewing fauna in the Villány Hills was sampled by means of regular visits to fixed recording sites representing different habitats: 1. Dry open grasslands, calcareous open rock grasslands: Nagyharsány, S slope of Szársomlyó; the top of Kis-hegy and Nagy-hegy (Csarnóta); Mariagyüd, S slopes of Tenkes-summit. 2. Open dry deciduous woodlands, white oak scrub woodlands: Siklós, Csukmahegy; Mariagyüd, Tenkes-summit. 3. Closed dry deciduous woodlands, Illyrian beech and oak-hornbeam woodlands: Vokány, Trinitás forest; Kistótfalu, Kopasz Hill. So as to be able to gain more information on the lacewing fauna from the conservation point of view, some other places were also visited in the meantime (Fig. 1), in addition to the above mentioned collecting sites.