The condition and dynamics of the entomophilic fauna of Medicago sativa L. seeds in the cultivated lands of the Belgorod region were studied, using insecticides and without treatment. The species composition of pests, entomophages and pollinators on seed crops M. sativa is found. 17% of pollinator species have been found to belong to the family Megachilidae. The species density of the entomofauna of potential pollinators after treatment with insecticide decreased by a factor of 2. The Menhinick index is also down on 50%, indicating a decrease in species diversit
