Ábrahám Levente (szerk.): Válogatott tanulmányok V. - Natura Somogyiensis 17. (Kaposvár, 2010)
LŐKKÖS, A: Balaton környéki lápok vízibogarai (Coleoptera: Hydradephaga, Hydrophiloidea, Hydraenidae)
Natura Somogyiensis 17 153-156 Kaposvár, 2009 Water beetle fauna of the moors at Lake Balaton (Coleoptera: Hydraenidae) ANDOR LŐKKÖS University of Pannónia, Georgikon Faculty, Department of Animal Science and Animal Breeding, H-8340, Keszthely, Deák F. u. 16., Hungary, e-mail: a.lokkos@gmail.com LŐKKÖS , A: Water beetle fauna of the moors at the Lake Balaton (Coleoptera: Hydraenidae). Abstract: Results of faunistic investigations on the moors along the Southern cost of the Lake Balaton is published. We have data on the water beetle fauna of Kis-Balaton and Nagyberek only. 64 species and subspecies of 7 families are recorded. Samples were taken at 6 places near Lake Balaton between 2003 and 2009. Most of the collected species are common throughout the country only Laccobius gracilis Motschulsky, 1855, is rare. Keywords: faunistical records, Coleoptera, Hydraphaga, Hydrophiloidea, Balaton, Hungary Introduction The investigated moors were originally bays of the lake which were separated by sandbarriers. Now, these areas are strongly degradated, some of them were drainaged, or fish ponds are established there. Only few of them are remained in natural condition but they are seriously endangered. Between 2003 and 2009, I took several trips in the Southern cost of the lake collecting water beetles. The Hungarian aquatic beetle fauna is poorly studied, this is why so important each paper on this group, including the present study. Only few papers deal with this group, altogether 72 species were published from KisBalaton (KONDOROSY et al. 1996, CSABAI et al. 2001) and 80 species from Nagy-berek (LŐKKÖS 2006). Material and methods For the sampling, we used a circle shaped 40 cm diameter, 0.5 mm mesh, and also a smaller one called "tee filter". Collecting beetles on light was an auxiliary method, for this, I used a white sheet lightened with a mercury lamp. The collected specimens were killed with ethyl-acetate, and conserved dry. For identification, CSABAI (2000), CSABAI et al. (2002), HEBAUER (1989), JÄCH (1992, 1998), JÄCH et al. (2008) and LOHSE (1971) were consulted. Helophorus minutus/paraminutus could be differentiated only by chromosomes; therefore we discuss them as species-group.
