Peculiarities in ecology of cuckoo-wasps (Hymenoptera, Chrysididae) in soil biocenoses from the northern macroslope of the Central Caucasus

The data on ecology and biotopical distribution of 126 cuckoo-wasp species from 17 genera depending on mesorelief and soil composition are given; the species complexes in terms of the ecological niche are distinguished. Cuckoo-wasps are characterized by various range of ecological niches; both the strictly and widely specialized species are found among geobiont cuckoo-wasps, but the most of recorded species prefer clay steep and gentle slopes where their diversity is 2,1 times higher than that in sandstones.