Janus Pannonius Múzeum Évkönyve 41-42 (1996-1997 )(Pécs, 1998)

Természettudományok - Uherkovich, Ákos–Sára Nógrádi: The caddisfly (Trichoptera) fauna of the Szatmár–Bereg Plain, Northeast Hungary

A Janus Pannonius Múzeum Évkönyve 41-42 (1996-97) 49-62 Pécs, 1998 The caddisfly (Trichoptera) fauna of the Szatmár-Bereg Plain, Northeast Hungary Ákos UHERKOVICH and Sára NÓGRÁDI UHERKOVICH, Á. and NÓGRÁDI, S.: The caddisfly (Trichoptera) fauna of the Szatmár-Bereg Plain, Northeast Hungary. Abstract. 112 samples containing altogether 28,877 adults were taken in 31 localities. 74 species (belonging to 10 families) were recorded from these samples. No data have been published earlier from this region. Oxyethira tristella Юар. and Stactobiella risi (Felber) proved to be new for the Hungarian fauna. Several rare species were also collected, some of them for the first time ever on the Great Hungarian Plain. The composition of caddisfly communities is characteristic of each water body and differs considerably from that of other aquatic biotopes of Hungary. With 5 figures and 3 tables. Introduction From almost all Hungarian regions more or less knowledge have already been gained as regards the caddisfly fauna. The western and southern part of Transdanubia were studied rather well, e. g. the Kőszeg Mountains, the Órség Landscape Area, the Mecsek Mountains, the Dráva region or the lake Balaton and its catchment area (ÚJHELYI 1979,1981,1983, NÓGRÁDI 1987, NÓGRÁDI, UHERKOVICH 1985, 1988a, 1988b, 1989, 1990, 1991, 1994, 1995a, 1995b, NÓGRÁDI et al. 1985, UHERKOVICH, NÓGRÁDI 1988, 1992). From the area of the Northern Mountains we also have many data (Kiss 1979, 1980, 1981, ÚJHELYI 1974, NÓGRÁDI, UHERKOVICH 1988b, NÓGRÁDI et al. 1995, UHERKOVICH, NÓGRÁDI 1994). Our knowledge about the Trichoptera fauna of the Great Hungarian Plain is insufficient. The larger Hungarian collections hardly have voucher specimens from there as it is shown by NÓGRÁDI (1989, 1995). Recent collecting activities do not extend to the entire area of the Plain (NÓGRÁDI et al. 1990, NÓGRÁDI and UHERKOVICH 1996, as well as UHERKOVICH and NÓGRÁDI 1990). We had caddisfly data from the northeastern part of the Plain not in the least, although this region has a dense water system and, therefore, we had to suppose that interesting and rich caddisfly communities could occur there. We had a plan to investigate this area, but owing to the long distance from our home and institute we could not ensure the expenses. In 1993 we were invited by the Hortobágy National Park (HNP) Management to investigate this region, and it was declared that all the costs of the field work would be borne by this institution. In consequence of this support we could start our field work, moreover we got many caddisfly samples from the fellow workers of a collecting program organized by the HNP Management. The geographic situation of collecting sites is given in Figs. 1-2. In Table 1 we present UTM grids and the geographic coordinates of the localities, to allow their correct localization. Fig. 1. Geographic location of sampling sites (for meaning of the figures see text). 1. ábra. A mintavételi helyek földrajzi elhelyezkedése (a számok magyarázata a szövegben). The sampling sites