H. Harmat Beáta (szerk.): A Bakonyi Természettudományi Múzeum Közleményei 28. (Zirc, 2011)
Móra, A., Deák, Cs., Kálmán, Z., Lőkkös, A., Soós, N., Csabai, Z.: Contribution to the aquatic insect fauna of Káli-medence and Fekete-hegy, and their surroundings (Balaton Uplands)
Chironomus acidophilus Keyl, 1960 - The species belonging to Chironomus (Chironomus) subgenus are hardly distinguishable on the basis of morphological characters. Due to these difficulties the distribution of certain species is still unknown. On the basis of available data Ch. acidophilus inhabits small temporary ponds. The only Hungarian record (Bükk Mountains) of this species was based on karyological investigations (MICHAILOVA 1995). Chironomus melanescens Keyl, 1961 - As it is in the case of the previous species, the European distribution of Ch. melanescens is still unknown. In Hungary it has been recorded from two localities from the Upper-Tisza region, as results of karyological investigations (DÉVAI et al. 1984; MICHAILOVA 1995). Such this is the first occurrence of Ch. melanescens in the Transdanubian region. The habitat of this species is poorly known, so far it has been collected from standing waters with plant remnants. Chironomus uliginosus Keyl, 1960 - The only Hungarian record was given by MICHAILOVA (1995) from Bükk Mountains, these specimens were identified using karyology. In Western Europe C. uliginosus inhabits bogs and woodland pools (MOLLER PLLLOT 2009). Our results suggest that the ponds on the plateau of Fekete-hegy are typical habitats for this species. Polypedilum tritum (Walker, 1856) - The species of Pentapedilum subgenus were not distinguishable as larvae for a long time, and appropriate keys are only recently available (OYEWO and S^ETHER 2008). According to the problems with identification, only some ambiguous records have been known for this species from Hungary (see MÓRA and DÉVAI 2004). This is the first time that P. tritum was collected in Transdanubian region. It occurs in standing eutrophic waters and slow-flowing small rivers. Polypedilum uncinatum (Goetghebuer, 1921) - The European distribution of this species is not exactly known because of the taxonomical problems of the Pentapedilum subgenus. The species name was firstly mentioned by KOSKENNIEMI (1989) from Hungary, but without exact species level identification (as Polypedilum cf. uncinatum). The first unambiguously identified larvae were collected in a backwater of Danube ( MÓRA et al. 2010b). It is possible that P. uncinatum and P. tritum have got mixed up in previous studies. Cladotanytarsus vanderwulpi (Edwards, 1929) - Palaearctic species which is widely distributed in Europe. On the basis of morphological characters the species of the genus cannot be identified as larvae, while exuviae can adequately be distinguished. These problems with identification caused that C. vanderwulpi is only known from those sites in Hungary where exuviae were collected ( MÓRA 2008b; MÓRA et al. 2008). Paratanytarsus laetipes (Zetterstedt, 1850) - Widespread species all over Europe. The larvae inhabit stagnant and temporary ponds. The species of the genus are not or can hardly be distinguishable as larvae on the basis of morphological characters, while exuviae can easily be identified. The Hungarian occurrence of P. laetipes has not been recorded, such it is new species to the fauna of Hungary. In the list of the species we gave the locality (with administration unit), the date of sampling, the total number of individuals and the abbreviations for the names of the collectors (ÁD - Árva, Diána; BR - Boda, Réka; CsZ - Csabai, Zoltán; IK - Ihász, Katalin; KA Kálmán, András; KZ - Kálmán, Zoltán; LA - Lőkkös, Andor; MA - Móra, Arnold; MB Maroskövi, Beáta; SN - Soós, Nándor; Szí - Szivák, Ildikó; TM - Tóth, Mónika). In the case 154
