Eulophid Wasps (Hymenoptera, Eulophidae), Parasitoids of Leaf-Mining Moths (Lepidoptera: Gracillariidae, Nepticulidae, Tischeriidae) on the English Oak in the Middle Volga Area

摘要

Data on the parasitoid eulophid complexes reared from 6 species of leaf mining moths damaging the oak in the Middle Volga Area are reported. The reared eulophids belong to three subfamilies: Eulophinae (8 species from 6 genera): Cirrospilus diallus Walker, C. viticola (Rondani), Euplectrus liparidis Ferriere, Hyssopus geniculatus (Hartig), Sympiesis gordius (Walker), Pnigalio rotundiventris (Erdos), P. soemius (Walker), Rhic-nopelte crassicornis (Nees); Entedoninae (11 species from 4 genera): Chrysocharis laomedon (Walker), Ch. prodice (Walker), Ch. pubens Delucchi, Ch. submutica Graham, Closterocerus formosus Westwood, Neochry-socharis aratus (Walker), Pediobius cassidae Erdos, P. flaviscapus (Thomson), P. metallicus (Nees), P.pyrgo Walker; and Tetrastichinae (3 species from 3 genera): Aprostocetus sp., Minotetrastichus frontalis (Nees), and Sigmophora brevicornis (Panzer). The most abundant of the moth parasitoids are M. frontalis and Ch. laomedon, while Tischeria ekebladella has the greatest number of parasitoids. The ectoparasitoids/endoparasitoids ratio in the number of species is 2 : 1, and in the number of individuals reared, 1.76 : 1. Thus, the host density is regulated primarily by the ectoparasitoids.