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Acknowledgement - We thank F. Szentkirályi, G. Hegyessy, V. G. Papp and J. Patocka for their kind assistance during the collecting trips, and to T. Jermy for revising the English text. Thanks are also extended to G. Szövényi for help in the preparation of the manuscript and I. Bába (Paulus Co., Pomáz) for completing of the figure. This project was supported by the joint agreement of the Hungarian and Slovakian Academies (No. 17) and partly by the Hungarian Science Foundation (OTKA, No. T 025355). LITERATURE Cejchan, A. (1958): Príspevek k poznani rovnorídlého hmyzu (Orthoptera) Slovenska II. (Beitrag zur Kenntnis der Orthopteren von Slovakei II.) - Cas. Siez. Mus. Vedy prir. 7:1-7 (in Czech, German abstract). Cejchan, A. (1987): Poznámky o orthopteroidnim hmyzu (s.l.) Slanskych vrchü (Grylloptera, Orthoptera s. Str., Dictuoptera - Blattodea). (Notes on the Orthopteroid insects (s.l. of the Slanské vrchy Mts /Grylloptera, Orthoptera s. str., Dictuoptera - Blattodea/) - Sbor. Nár. Muz. Praha, rada B, 43: 59-62 (in Czech, English abstract). Cejchan, A. (1988): K poznani orthopteroidního hmyzu (s.l.) Bukovskych vrchu v CHKO Vychodné Karpaty (Grylloptera, Orthoptera s. str., Dermaptera, Dictuoptera). - Sbor. Nár. Muz. Praha, rada B, 44: 65-74. Chladek, F. (1994): Rovnokrídlovce (Orthoptera), sváby (Blattoptera), modlivky (Mantoptera) a ucholaky (Dermaptera). - In: M. Rozloznik and E. Karasová (eds.) - Slovensky Kras., pp. 157-163. (in Slovak only). Chyzer, K. (1897): Zemplénvármegye Orthopterái. (Orthoptera of county Zemplén, Hungary) Rovart. Lap. 4: 99-101 (in Hungarian only). Galvagni, A. et Fontana, P. (1996): Descrizione della Pseudopodisma nagyi specie nuova dell' Ungheria nord-orientale (Insecta, Orthoptera, Catantopidae) - Atti. Acc. Rov. Agiati, Ser. 7, 5B: 209-232. Gulicka, J. (1967): Orthoptera, Blattodea, Mantodea, Dermaptera zátopového územia pod Vihorlatom. (Orthoptera, Blattodea, Mantodea, Dermaptera des Inundationsgebietes unter dem Vihorlat). - Acta Fac. Rer. natur. Univ. Comen. Zool., 12: 41-62 (in Slovak, German abstract). Harz, K. (1969): Die Orthopteren Europas - The Orthoptera of Europe. I. The Hague, Dr. W. Junk, 749 pp. Harz, K. (1975): Die Orthopteren Europas - The Orthoptera of Europe. II. The Hague, Dr. W. Junk B.V., 939 pp. Holusa, J. Jr (1996): A contribution to the knowledge of the distribution of grasshopers and crickets throughout Slovakia. - Entomofauna carpathica, 8: 115-124. Mafan, J. (1952): A contribution to the knowledge of the taxonomy, origin and geographical distribution of the species of the genus Poecilimon Fisch, from the affinity of the species Poecilimon intermedius (Fieb.) (Orthoptera: Tettigoniidae, Subfam. Phaneropterinae.). - Zbor. ent. odd. Nár. mus. Praha, 28: 237-250. Mafan, J. et Èejchan, A. (1977): Enumeratio Insectorum Bohemoslovakiae. Blattoptera, Mantoptera, Dermaptera, Orthoptera. - Acta. faun. ent. Mus. nat. Prague, 15, Suppl. 4: 35-39 Mocsáry, S. (1877): Adatok Zemplén és Ung megyék faunájához. - Math, term.-tudom. Közlem., 13 (1875-1876): 131-185 Nagy, B. (1981): Az Isophya modesta Friv. (Orthoptera: Tettigoniidae) reliktum populációi Magyarországon. (Relikt-Populationen von Isophya modesta Friv. /Orthopterea, Tettigoniidae) in Ungarn gefunden.) - Folia Hist.-nat. Mus. Matr. 7: 29-32 [in Hungarian, German abstract] Nagy, B. and Rácz, I. (1996): Orthopteroid insects in the Bükk Mountain. - In: Mahunka S. (ed.): The fauna of the Bükk National Park. Budapest pp. 95-123.