Abstract
The aim of this study was to determine and compare the guilds of parasitic Hymenoptera associated with the grain aphid on rye and winter wheat. Of the seven species of primary parasitoids (Braconidae: Aphidiinae, Aphelinidae), parasitizing colonies of Sitobion avenae, the most numerous and most frequently occurring, included Praon volucre, Aphidius ervi and Aphidius uzbekistanicus. Primary parasitoids of grain aphids were eliminated largely by hyperparasitoids, mostly of the families Megaspilidae (Dendrocerus carpenteri), Figitidae-Alloxystini (Alloxysta spp. and Phaenoglyphis villosa) and Pteromalidae (Pachyneuron aphidis, Asaphes vulgaris, Coruna clavata), but D. carpenteri and Alloxysta spp. belonged to dominants and subdominants, respectively.
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