Somogyi Múzeumok Közleményei 15. (2002)

Nógrádi Sára – Uherkovich Ákos: A Mura és Kerka vízrendszerének tegzesei (Trichoptera)

ON THE CADDISFLIES OF THE RIVERS MURAAND KERKA 135 5 CO" 2 9 9 (N, U); Muraszemenye (Alsószemenye), Mura, 24. 6. 1998 5 9 9 , 21. 7. 1998 6 Ö"Ö" 21 9 9 (N, U); Muraszemenye (Csernec), Kerka, 22. 7. 1998 4 9 9 (N, U); Szécsisziget, Kerka, 20. 7. 1998 2 0*0" 2 9 9 (N, U); Szentpéterfölde, Erdészet, 16-31. 8. 1990 1 О" (It). Oecetis ochracea (Curtis, 1825) - Magyarszombatfa (UHERKOVICH, NÓGRÁDI 1992) ** Kerkaszentkiraly, Lendva, 26. 5. 1997 1 O" (N, U); Muraszemenye (Alsószemenye), Mura, 24. 6. 1998 3 0"o* 1 9 , 21. 7. 1998 11 CfC? 6 9 9 (N, U); Muraszemenye (Csernec), Kerka, 22. 7.1998 114 0*0" 17 9 9 (N,U); Szécsisziget, Kerka, 20. 7. 1998 1 9 (N, U); Szentpéterfölde, Erdészet, 16. 6 - 31. 8. 1986 3 0"o* 1 9 , 1-30. 6. 1988 1 О", 1-15. 8. 1989 1 О", 6. 8. 1991 1 О" (It). Oecetis testacea (Curtis, 1834) - Magyarszombatfa (NÓGRÁDI 1985a, UHERKOVICH, NÓGRÁDI 1992). Oecetis tripunctata (Fabricius, 1793) - Magyarszombatfa (UHERKOVICH, NÓGRÁDI 1992). Setodes punctatus (Fabricius, 1793) - Magyarszombatfa (UHERKOVICH, NÓGRÁDI 1992) ** Muraszemenye (Alsószemenye), Mura, 21. 7. 1998 5 0"o" 7 9 9 (N, U); Muraszemenye (Csernec), Kerka, 22. 7. 1998 5 СТО" 2 9 9 (N, U); Szécsisziget, Kerka, 20. 7. 1998 1 O* 299 (N, U). Setodes viridis (Fourcroy, 1785) - Magyarszombatfa (NÓGRÁDI 1985a, UHERKOVICH, NÓGRÁDI 1992). Leptocerus tineiformis Curtis, 1834 - Magyar-szombatfa (UHERKOVICH, NÓGRÁDI 1992) ** Lenti, várkastély, Kerka, 23. 6. 1998 1 9 (N, U); Murarátka, Holt-Mura, 13. 7. 1993 7 СГсГ 9 9 9 (N, U); Muraszemenye (Alsószemenye), Mura, 24. 6. 1998 2 СГ 7 9 9 , 21. 7. 1998 2 СТО" 6 9 9 (N, U); Szécsisziget, Kerka, 20. 7. 1998 1 O" (N, U); Szentpéterfölde, Erdészet, 115. 7. 19892 9 9 (It). Adicella filicornis (Pictet, 1834) - Magyarszombatfa (UHERKOVICH, NÓGRÁDI 1992). Sericostomatidae Notidobia ciliaris (Linnaeus, 1761) - Kercaszomor, Magyarföld, Szentgyörgyvölgy (NÓGRÁDI, UHERKOVICH 1995a); Magyarszombatfa (UHERKOVICH, NÓGRÁDI 1992) ** Szentpéterfölde, erdészet, 4. 5. 1997 3СГСГ (U). Sericostoma personatum (Kirby et Spence, 1869) Szentpéterfölde, Erdészet, 16-30. 6. 1986 1 9 (It) Beraeidae Beraea pullata (Curtis, 1834) - Magyarszombatfa (UHERKOVICH, NÓGRÁDI 1992) ** Kerkateskánd, kis árok, 27. 5. 1997 1 СГ (N, U). Beraeodes minutus (Linnaeus, 1761) Magyarszombatfa (NÓGRÁDI 1986, UHERKOVICH, NÓGRÁDI 1992) ** Szentpéterfölde, erdészet, 4. 5. 1997 4Cro"(U). Discussion The main aim of these examinations carried out in a formerly hardly known region was to find an extremely species-rich area, where until recent times altogether 113 caddisfly (Trichoptera) species have been collected. No other region being such diverse and untouched can be found in Hungary. For example, both in the Aggtelek National Park and Bükk National Park 109 species were pointed out; 107 species were taken in the Dráva region (NÓGRÁDI, UHERKOVICH 1998a, by recently 110 species), 102 species were captured in Kőszeg Mts., W Hungary; while from the Szigetköz (NW Hungary) about 85 species have been known. Both from the Mecsek Mts. (S Hungary) and SzatmárBereg-Plain (NE Hungary) cca. 75 caddisfly species have been reported. The variability of caddisfly fauna is caused by three main factors. 1. In this area many types of biotopes can be found: springs with unpolluted water and low ionic content, small brooks with pebbly bed, bogs, smaller and larger rivers. The density of water courses - due to the substantial precipitation and the relief - is rather high, exceeding the country average. 2. The quality (cleanness) of waters is good or excellent, predominantly that of small brooks and springs. The quality of larger water courses has become better during the last years. The fluctuation of water output does not have extremities. The summer dry periods are not characteristic to this region, consequently the brooks never become dry. 3. Moreover, the proximity of the eastern foothills of the Alps is advantageous for the survival of caddisfly communities: members of them are able to regenerate after any damage to the habitats. These habitats are situated side by side, and in case of a damage to any of them, the caddisflies can re-colonize this one. These damages can either be an acute pollution, the control or cleaning (dredging) of bed or, rarely, total drying out. 100 species of the total 113 were captured at Magyarszombatfa, in a single site, mostly by light trap, but sometimes by personal collections. This extremely high number of species - this is the richest site in Hungary - is due both to the rather high quality and variability of habitats and the intensity of collections. The light trap erected in the field, along the brook "Szentgyörgyvölgyi-patak" and in the vicinity of a widespread bog, provided a rather large (more than 10,000 adults) and very diverse caddisfly material during the years (UHERKOVICH, NÓGRÁDI 1992). We ought to take note of some species yielded by this trap. The first specimen of the extremely valuable member of the Hungarian fauna, Platyphylax frauenfeldi Brau, had been captured here (ÚJHELYI 1982a, 1982b), and later it was collected in some other points of southwest Hungary (ÚJHELYI 1981, NÓGRÁDI, UHERKOVICH 1995a, 1998a, 1998b, UHERKOVICH, NÓGRÁDI 1997). A characteristic species of this site is