H. dr. Harmat Beáta (szerk.): A Bakonyi Természettudományi Múzeum Közleményei 22. (Zirc, 2005)

CSABAI ZOLTÁN – MÓRA ARNOLD – BODA PÁL – CSER BALÁZS – MÁLNÁS KRISTÓF: Contribution to the aquatic insect fauna of the northern part of the Bakony mountains (Ephemeroptera, Coleoptera, Heteroptera and Trichoptera)

During the collecting period the aquatic insects were captured by sweeping with a long handled pond net just above the substrate, on water surface, and among the submerged or emergent vegetation (MSZ 1998). In flowing waters aquatic insects were captured by „kick and sweep" technique. Beyond netting some beetles, bugs, mayflies and caddisflies were captured by manual singling from surface of submerged stones, woodstocks, etc. On specimens which were identifiable on field, we took observational data into consideration. The majority of the captured specimens - which were not identifiable on field - were preserved in 70% ethyl-alcohol. The aquatic insects were identified by using keys and descriptions by CSABAI (2000), CSABAI et al. (2002), BENEDEK (1969), BAUERNFEIND and HUMPESCH (2001), EDINGTON and HILDREW (1995), JANSSON (1986), KLUGE (1997), MÜLLER-LIEBENAU (1969), PITSCH (1993), SAVAGE (1989), Soós (1963), WALLACE et al. (1990) and WARINGER and GRAF (1997). The nomenclature follows CSABAI (2003a), KONDOROSY (1999), KOVÁCS and BAUERNFEIND (2003), KOVÁCS and MERKL (2005) and NÓGRÁDI and UHERKOVICH (2002). Identification made by the authors (Ephemeroptera: Kristóf Málnás and Balázs Cser, Coleoptera: Zoltán Csabai, Heteroptera: Pál Boda, Trichoptera: Arnold Móra) Helophoms aquaticus I

H. aequalis and H. minutus I

H. paraminutus species are common, more often coexistent in Hungary. The accurate separation of the species from each other is feasible only by chromosomal analysis. There was beyond our means to execute this analysis, therefore these nearly related species are treated uniformly, like pair-species. Accurate identification oïElmis, Limnius and Riolus species are possible only by examination of male genitalia, therefore in the list below occurrence data of male specimens of this species are listed. Some voucher specimens of collected species are deposited in the collection of Bakony Natural History Museum (Zirc), further specimens are deposited in authors' collections. Figure 1. Sampling sites in the north part of the Bakony Mountains.