Uherkovich Ákos: A Dráva mente állatvilága II. (Dunántúli Dolgozatok Természettudományi Sorozat 9., 1998)
Ábrahám L.: A Duna-Dráva Nemzeti Park recésszárnyú-alkatú (Megaloptera, Raphidioptera, Neuroptera) faunájának természetvédelmi vizsgálata, II. - Natural protection studies on the neuropteroids (Megaloptera, Raphidioptera, Neuroptera) fauna of the Duna-Dráva National Park, Hungary II.
282 DUNÁNTÚLI DOLGOZATOK (A) TERMÉSZETTUDOMÁNYI SOROZAT 9. (1998) Fig. 6. Composition of Neuropteroidea fauna along the Dráva river according to groups of faunal elements. 6. ábra. A Dráva mente %-os faunaelem megoszlása: policentrikus holarktikus (10%), mediterrán In the area studied, more than half (51%) of the species belongs to the Mediterranean faunal elements with West Palearctic distribution. About one third (32%) of species belongs to the Siberian faunal elements with East - Palearctic and polycentric distribution, whereas species with large distribution give about 10% of neuropteroids; the euryoecic species are of uncertain origin but the immense area of distribution present only a few percentage of the fauna. A more detailed study of data has shown that along the Dráva river the number of holomediterrean (12 species) and expansive holomediterranean (11 species) is high, to which the Extramediterranean-European elements (4 species, 32%) are also attached; the latter are of expansive holomediterranean descendance, their original Mediterranean area has been eliminated (MALICKY et al. 1983). The participation of the species belonging to the type of Siberian faunal elements is also high (16 species). These species are linked to the nemoral forest zone, so show an extremely large distribution. The territory of Hungary and the region along the Dráva river belongs to the faunal range of West - Palearctic and its fauna has extended from the inter- and postglacial Mediterranean refugium area. The spread of these faunal elements must have taken place from the direction of the Illyrian province before the forests of the territory were closed at the beginning of the boreal or oak phase (VARGA 1964). On the other hand, the species belonging to the Eastern Palearctic subregion - mostly ones of Siberian origin - made their way into Hungary from eastern direction when the postglacial climate had become humid and rainy and a forest zone was formed (VARGA 1977).
