Estimation of city medium quality by methods of biological monitoring

The opportunity of using the bees tribe Bombini (Apidae) and ants (Formicidaå) for city medium bio-logical monitoring is surveyed. At bees using most informative parameters are: change of total number of kinds on a gradient of anthropogenous influence, index of variety of community, factors of faunistic simi-larity and similarity on an abundance with the control, number of rare and very rare kinds in ecosystem. At studying ants the perspective parameter is the ratio of jack types on various of influence degree sites.