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

temporarily water-covered meadow, where reed is retreating owing to degradation (DelyDraskovits 1991). Time of collection: April 1989. 23. Bátorliget, Fényi-erdő (forest) There is an ancient small swamp south of the village in a protected forest. It dries up temporarily and the reed is gradually replaced by sedge (Carex) and bulrush (Typha latifolia and 77. angustifolia). A strongly degraded stand. Time of collection: May 1993. 24. Bátorliget, Logota At the border of the village there is a strongly degraded patch of reed, with willow trees. It is doomed to perish. Time of collection: May 1993. 25. Bátorliget, Pergenyő This area just as well at the border of the village is situated at a deeper elevation. The ground is temporarily water covered, the stand is strongly degraded, heterogeneous, retreating due to grazing here. Time of collection: May 1993. 26. Szigetköz, Cikola-sziget (island) A larger patch of reed grows on the outer side of the dam. It gets under water during floods of the river Danube. Time of collection: May 1992. Methods of collection and rearing insects in laboratory At the localities listed above, the deformed reed shoots were cut right under the gall. The galls were collected along a one-meter wide path straight through the reed stand. The galls were determined by using the identification key of Chvála et al. (1974), then put one by one in a test tube with the necessary label. The test tubes were covered with mesh and stored at a well aired, rather dark place. The rearing pots were sprayed with water several times a week. The gall-forming and other inquiline Dipterans emerged continuously from the middle of April till the beginning of June, while the Hymenopterans mostly in the second part of the given time interval. In July the insects were removed from their empty galls to small glass vials. This method of rearing has been partly described in an earlier publication (Dely-Draskovits era/. 1993). RESULTS DIPTERA In the course of our research 3893 Lipara galls were collected in Hungary. From these galls, 1639 (42%) came from the Great Plain. We have 987 (25%) samples from Western Transdanubia, 614 (16%) from the Transdanubian Mountains and 497 (13%) from Southern Transdanubia. The number of collections per phytogeographical regions reflects the size of the reed vegetation area in the regions. The same stands for the 156 (4%) samples from the scattered reed stands of the Northern Mountains.