S. Mahunka szerk.: Folia Entomologica Hungarica 55. (Budapest, 1994)

of this, it is an optimal stand for reed management, where signs of degradation cannot be observed. Time of collection: February, 1987; April, 1992. 2. Fertő-Hanság National Park, Hidegség It is next to the sorting area of the local reed management company (Fertői Nádgazdálkodási Vállalat) at Hidegség. It is a thin and relatively dry stand, at some places strongly mixed with sedge (Carex). The reed is never mown. The bundles piled up around the sorting department are left here in spring and early summer (time of swarming), so the gallfly infection is definitely stronger here than at wetter places some 700800 m away. Time of collection: February 1987; April 1992. 3. Lake Balaton, Fonyód, Csehi-Nagy-Berek This is one of the last surviving stands of the once large, previous reed belt of the lake, where the different habitats vary. Near the village it is strongly affected by a higher nitrogen concentration. The different constructions in the region caused and still cause damage, destroying the reed vegetation in patches. The galls were collected from dry or temporarily water covered reed stands. Time of collection: January, March-April 198688. 4. Kis-Balaton, Vörs The ground is temporarily water covered. Every year the reed is left unmown. The area is under environmental protection. Time of collection: January 1986; February 1987; January 1988. Fig. 1. The flora regions of Hungary and the collecting sites (1 - 26). A = Western Transdanubia, B = Southern Transdanubia, C = Transdanubian Mountains, D = Northern Mountains, E = Great Plain