Uherkovich Ákos: A Barcsi borókás élővilága, IV. (Dunántúli Dolgozatok Természettudományi Sorozat 5., 1985)

Mahunka S.: A Barcsi borókás Oribatida faunája (Acari). - The Oribatid fauna of the Old Juniper Woodland of Barcs, Hungary (Acari: Oribatida)

Epimeres 4 not touching medially, their bordures frame also the genital aperture. Bpimeral aufface with weak polygonal reticulation. Epimeral"setae somple,some of them /lc. Ja, 3b/ arising on small tubercles /Pig. .5/. Setae lc originating on epimeral surface, far from pedotecta 1. Anogenital region: Five pairs of short genital setae present. Aggenital, anal and adanal setae short, setae nearly equal in length, setae ad-joriginating in postanal, ad£ in para-anal, ad, in preanal position. Distance of the latter equalling the same of adp. Pori iad in adanal position. Remarks: The new species belong to the "keilbachi-group"

, upon with BALOGH /1983/ based his genus Moritziella, but it is distinguished from Berniella BALOGH, 1983 only by the divided rostrum, and this character, alone seems insufficient for the separation. The solution of this problem needs further investigations. To this species group the following species belong: M. keilbachi MORITZ, 1969 M. doris PBREZ-I1TIG0,'1972 M. fixa MIHELCIC, 1956, comb. nov. The new species is distinguished from all congeners by the granulate surface of the coxistemal region and the ratio of its prodorsal setae. Ecological and zoog eogr a-phiçal observations In spite of the fact that the consevration area comprises mixed forests /oak, birch, juniper and pine/ settled on dry habitats, we can find special biotopes expressedly for fauna particularly favouring moist or wet biotopes. The fauna seems to be poor, since the number of approved, species does not reach that of a more monotonous oak forest, or e.g. the number of species shown in the old marsh land of Bátorliget. On the other hand, this number is almost identical with that of the Hortobágy National Park, though with a different spectrum of species. This fact may well be corroborated with the data of animal groups, thus it certainly reveals a few hundred years of history only for this secondarily established area displaying anthropogenic effects. In this sense partly we can establish strong degradation of the original, ancient, mostly oak-forest fauna, and partly we can show an infiltration of more hygrophilous, Atlantic, perhaps North European elements. This -latter gives from soil-zoological point of view the special interest of the area, since here we might encounter such special element which cannot be found elsewhere in Hungary. This is why the majority of the species new to the fauna of Hungary belongs here. In order to prove some of the points discussed above, let us have a few examples: 1. Missing species, which otherwise are all well spread elsewhere in the oak woods of Transdanubia: Damaeolus asperatus, Amerobelba decedens, Furcoribula furcillata, and the species of Liacarus, Cepheus and Ctenobelba. Furthermore, no species of the genera has come forward: Hermanniella and Hermanhia, thé representatives of the taxa. Belboidea, Galumnoidea have been rather scarce. 2. At the same time, the lack of Eremobelba geographica or Tegoribates latirostris from the rather versatile

.moist or wet habitats is also quite unexplainable. Save one yet inidentified species of Trimalaconothrus no other representative of the families Malaconothridae and Trhypochthoniidae has come forward. 203