In 2003 studies were carried out in apple orchards in the environs of Kornik. Species composition of parasitoids of A. rosanus and total parasitism were assessed. Pupae of A. rosanu were parasitized by the following parasitoid groups: Ichneumonidae (Hymenoptera) in 4.3% and Tachinidae (Diptera) in 3.8%. The totals parasitism by all parasitoids was 8.1%. Three ichneumonid species were reared from tortrix pupae. Itoplectis maculator (F.) was most effective parasitoid and limited population abundance of A. rosanus to 1.7%. Tachinidae (Cyclorrhapha) : Parasite Archips rosanus (Tortricidae) : Host Ichneumonidae (Ichneumonoidea) : Parasite Parasites diseases and disorders; Parasites; Insect parasites; Hosts; Insect hosts; Ecology; Habitat; Man made habitat; Land zones; Palaearctic region; Eurasia; Europe Archips rosanus; Dipteran parasites; Prevalence & effect on host abundance; Tachinidae; Hymenopteran parasites; Ichneumonidae; Population dynamics; Cultivated land habitat; Orchard; Poland; Kornik Ichneumonidae; Tachinidae; Lepidopteran hosts; Prevalence & effect on host abundance; Archips rosanus; Cultivated land habitat; Orchard; Poland; Kornik noneaafc0