The leaf-mines of Stigmella poterii (Stainton) were collected in Ta Hameenlinna near Hattelmalanjarvi on Comarum palustre L. and in Ta Janakkala in the bogs Konttilansuo and Suurisuo on Rubus chamaemorus L. and besides the moths, following parasitic wasps were reared from the mines: Adelius etythronotus (Forster, 1851), A. subfasciatus Haliday, 1833 (Braconidae, Adeliinae), Gnamptodon decoris (Forster, 1862), G. pumilio (Nees, 1834) (Braconidae, Gnamptodontinae) and Chrysocharis prodice (Walker, 1839) (Eulophidae, Entedontinae). S. poterii is a new host for G. pumilio and C. prodice. New rearing combinations are (C. prodice/S. poterii/ C. palustre), (C. prodice/S. poterii/R. chamaemorus), (G. decoris/ S. poterii/R. chamaemorus), (G. pumilio/S. poterii/R. chamaemorus), (A. erythronotus/S. poterii/R. chamaemorus) and (A. subfasciatus/ S. poterii/R. chamaemorus). As an unexpected finding one male of Amitus minervae Silvestri (Platygastroidea, Platygastridae) was reared from the whitefly Aleyrodes lonicerae Walker (Homoptera, Aleyrododea) on the cloudberry. This whitefly is a new host for A. minervae, and thus combination (A. minervae/A. loniceraelR. chamaemorus) is new as well. Hymenoptera (Insecta): [Parasite]. Aleyrodes lonicerae (Aleyrodoidea): [Host]. Chrysocharis prodice (Eulophidae): [Parasite]. Gnamptodon decoris (Braconidae): [Parasite]. Amitus minervae (Platygasteridae): [Parasite]. Stigmella poterii (Nepticulidae): [Host]. noneEmail20150319