PARASITOID COMPLEX (HYMENOPTERA, EULOPHIDAE) OF MINING FLIES (DIPTERA, AGROMYZIDAE) IN THE MIDDLE VOLGA RIVER BASIN

Abstract

A parasitoid complex of fifteen Agromyzidae species (Agromyza nana Meigen, Aulagromyza populi (Kalt.), Amauromyza sp. n. aff. insularis, Calycomyza humeralis (von Roser), Chromatomyia horticola (Goureau), Liriomyza eupatoriana Spencer, L. demeijerei Hering, L. dracunculi Hering, L. strigata (Meigen), L. soror Hendel, L. tanaceti de Meijere, L. taraxaci Hering, Ophiomyia quinta Spencer (first recorded for the Palaearctic Region), Phytomyza petoei Hering and Ph. griffithsi Spencer) reared from 20 host plants were studied. A total of 38 host-parasitoid associations were analyzed, 31 of them were previously unrecorded. During this research, 17 Eulophidae parasitoid species (Cirrospilus viticola (Rondani), Chrysocharis pubicornis (Zetter-stedt), Ch. viridis Nees, Ch. crassiscapus (Thomson), Closterocerus tnfasciatus Westwood, Diglyphus crassinervis Erdos, D. chabrias (Walker), D. isaea Walker, D. poppoea Walker, D. pusztensis (Eras, Novicky), Minotetrastichus frontalis (Nees), Neochrysocharis aratus (Walker), N. formosa (Westwood), Pnigalio pectinicornis (Linnaeus), P. soemius (Walker), Pediobius metallicus (Nees) and P. cassidae Erdos)) were found. There are new parasitoid records for the pest species, Ch. horticola, A. nana and Ph. petoei. The number of ectoparasitoid species was 1.25 times greater than that of endoparasitoids in the parasitoid complexes, and the number of reared specimens of ectoparasitoids was 1.7 times greater than that of endoparasitoids. Dominant species of the parasitoid complexes of Agromyzidae were D. isaea (28.4%), Pediobius metallicus (14.5%), N. formosa (13.7%), and Pnigalio soemius (12.7%).