EN
The study was performed during two growing seasons (2002–2003). The experimental material was collected from hazel shrubs growing in three sites in Lublin. During the laboratory rearing that involved 1 922 larvae and pupae of 5 species of mining moths [Stigmella microtheriella (Stt.), Phyllonorycter coryli Nic., Phyllonorycter nicellii (Stt.), Parornix devoniella (Stt.), Coleophora serratella (L.)], 280 imagines of parasitoids were obtained. The most numerous group was Chalcidoidea f. Eulophidae – 93.2%, other species belonged to Braconidae –6.8%. The total parasitization of mining-moth larvae and pupae was 14.6%. The ratio of parasitization on mining moths for a particular complex of parasitoids oscillated from 7.8% to 41.2%. The highest parasitization ratio of mining moths was observed for the site II (16.3%) situated near a busy road.