ON LEPIDOPTERA FAUNA GENESIS OF ROSTOV REGION
During 1972-2007 it was studied the specific structure of Lepidoptera fauna of Rostov region: Rhopalocera group and greatest families of Heterocera group. The total number of collected specimens is 784. Hypothetical reconstruction of Lepidoptera fauna stages formation in Pleistocene and Holocene was carried out. In a process of alternation glacial and interglacial ages it was formed boreal element of regional fauna, which dominates now. Mediterranean zoogeography complex of species was formed in holocene. It was detected a fact of significant changes in the fauna of Lepidoptera, having place during XX century. Concentration of the greatest biovariety, especially zonal steppe elements on a small plots of entomological refuges is characteristic for the region.