Hymenopterous parasitoids associated with Phyllonorycter coryli (Nic.) and Phyllonorycter nicellii (Stt.) on hazel in Poland

Abstract

The parasitoid complex associated withPhyllonorycter coryliandP. nicellii(Lepidoptera: Gracillariidae) leaf miners on hazelin Poland was examined and the contribution in the parasitoid community as well as the parasitization level of two species was defined.The parasitoid community of the nut leaf blister moth,Phyllonorycter coryli(Nic.), and the red hazel midget,Phyllonorycter nicellii (Stt.), was studied in three localities situated in Lublin. At each locality, leaves with visible mines were collected from the shrubsCorylusavellanaL. andC. maximaMill. cv. Purpurea . Of the 518 larvae and pupae ofPh. coryli , 47 individual of parasitoids were obtained.However, 152 individuals of parasitoids from 898 mines ofPh. nicelliisuccessfully emerged. The highest contribution in the parasitoidcomplex of both leaf miner species was found for the chalcidoid family Eulophidae. The parasitoid community ofPh. coryliwas madeup of 11 species, 7 of which had not been recorded from this host before. Thirteen parasitoid species were reared from larvae and pupaeofPh. nicellii , 8 of which were recorded for the first time .The species from the genusChrysocharishad the greatest contribution in theparasitoid community ofPh. nicellii , whilePediobius sauliusWalk. was dominant in the parasitoid fauna ofPh. coryli.