S. Mahunka szerk.: Folia Entomologica Hungarica 43/1. (Budapest, 1982)
Festuca pseudovina facies of Molinio-Salicetum rosmarinifoliae (BODROGKÖZY and FARKAS, 1981). Mainly biocoenometric collectings were carried o> generally from March till November (GYORFFY, 1980 B). Besides this we used Malaise trap in Is, 6 to investigate the flying insects (MOCZAR and GYORFFY, 1981; GYORFFY and MOCZAR, 19b.\ The material collected by 70 Barber traps arranged in groups of 5 in 1979-1980 has been elaborated too. Samples were taken once a month until 1979, and twice a month in 1980. The detailed description of the investigated area and methods were given earlier (MOCZAR et al., 1980; GALLÉ et al., 1981). To determine the leafhopper species, I have primarily used the works of RIBAUT (1936, 1952), DLABOLA (1954), WAGNER (1962) and LO G V IN EN KO (1975). I thank the help of Irena DWORAKOWSKA for determining Typhlocybinae species. Nominations of Cicadellidae are corredted according to NAST (1972). Some bionomical and ecological valence data are completed from the works of SCHIEMENZ (1969, 1971, 1975, 1976). Results I. Qualitative and quantitative species composition of the leafhopper fauna in wind furrows. For evaluating the dominance relations, I have used Schiemenz' s division, according to which dominant species are with 16-100 dominance p.c., subdominant species are with 4-16 p.c., and accessory species are with 0-4 p.c. (SCHIEMENZ, 1969). On the basis of this, the dominance relations of the Auchenorrhyncha populations of the wind furrows are the following (Table 1.): Turrutus socialis was the dominant species in all the 4 years, and Ribautodelphax albostriata in 1978-1979. Subdominant were in 1977 six, in 1978 four, in 1979 three and in 1980 five species. Therefore the most important populations were in the wind furrows in 1977-1980: Turrutus socialis . Ribautodelphax albostriatus , Anakelisia perspicillata . Aphrodes bicinctus, Bobacella- corvina. Dora- tura stylata, Anaceratagallia ribauti. Eurysula lurida, Gravesteiniella boldi and Paluda pre.yssleri. Only three species ( Turrutus socialis, Aphrodes bicinctus, Anaceratagallia ribauti) have important role among them on the sand hills, too (GYORFFY, 1980 A). II. Data on the bionomics of the occurring species 1) Wintering in imago form: a) In one generation: Balclutha punctata , Mocydiopsis parvicauda, Ulopa trivia, Tettigometra atratn , Jassidaeus lugubris. b) In two generations: Anacera tagallia ribauti , Arboridia parvula , Eupelix cuspidata , Neoaliturus fenestratus. 2) Wintering in larval form: a) In one generation: Bobacella corvina , Hecalus glaucescens , Macustus grisescens , Xanthodelphax stra mineus . b) In two generations: Euscelis incisus , Eurysula l urida , Grav es teiniella boldi , Kosswigianella spinosa, Muirodelphax aubei, Rib autodelphax albostriatus , Struebingianella elegantula . 3) Wintering in egg form: a) In one generation: Austroagallia sinuata , Aphrodes albiger , A. bicinctus , A. elongatus , A. hi strionicus , A. serratulae , Artianus interstitialis , Batracomorphus irroratus , Cicadella viridis, Doratura exilis, D. homophyla , D. stylata , Goniagnathus brevis , Graphocraerus v e ntralis , Jassargus sursumflexus, Megophthalmus scanicuj, Mendrausus pauxillus , Palu da preyssleri, Lepyronia coleopt rata, Neophilaenus infum atus, N. lineatus . Philaenus spum arius , Ommatidiotus inco spicuus , Trypetimor pha fenetrata, Anakeli sia perspi cillata , Toya minuscula . b) In two generations: Arocephalus lanquidus, Deltocephalus pulicaris , Eupt eryx notata, Jassargus obtusivalvis , Paluda vitripennis , Psammotettix alienus, P . confinis , P. provinciális , S. slovacus , Psammo- tettix striatus , Recilia schmidtgeni , Turrutus socialis , Zyginidia pullula, Kelisia brucki , K. irre- gulata , K. perrieri, K. vittipennis . 41.26 p.c. of the species occurring in the wind furrows are univoltine and they overwinter in egg form. 26.98 p.c. are bivoltine and overwinter in egg form. 68.24 p.c. of the species overwinter in egg form. This value is between the data of SCHIEMENZ (1969) obtained in boggy meadows (63.5 p.c.) and in dry grassland (70.6 p.c.), therefore the conditions in wind furrows are less extreme than on the more exposed sand hills (GYORFFY, 1980 A). This is justified by
