First Records and Comparative Notes of Twelve Aphidiid Species (Hymenoptera, Aphidiidae) from the Fauna of Ukraine. Kaliuzhna, M. O. - Twelve aphidiid species are recorded from the fauna of Ukraine for the first time. Localities, hosts, distribution, and comparative notes on morphology of these species are given.
Morphological data on metanotal sculpture of aphidiine wasps (Hymenoptera, Braconidae, Aphidiinae), are reviewed based on the specimens collected in Ukraine. Specimens of 20 species of 13 genera were studied using light and scanning electron microscopy. Differences in menatonal morphology appear diagnostic for some genera or generic groups, such as tribes and subtribes. Seven general types of metanotal sculpture were distinguished. The proposed diagnostic characters are: the relative proportions of the metanotum and its parts (metascutellum, metascutellar arms), the shape and setation of the metascutellum, the number and form of the carinae arising from the base of metascutellum toward the mesoscutellum. To facilitate describing the structure of the metanotum in Aphidiinae, following measurements were established: the length and width of the metanotum and the metascutellum, the length of the metascutellar arms. The discovered characters could be used as additional diagnostic tools for aphidiine identification, and perhaps also in studies on their evolution and phylogeny.
Species composition and host associations of the aphidiid wasps infesting aphids in Kyiv, Cherkasy, Poltava and Kirovohrad Regions of the Central Wood-and-Steppe Zone of Ukraine were studied during 2010-2011, mainly on meadows. Nine species of aphids were found on 36 plant species, of them 7 species were infested by aphidiids. Six species of parasites were reared: Lysiphlebus fabarum (Marshall), L. confusus Tremblay et Eady, L. fritzmuelleri Mackauer, Lipolexis gracilis Förster, Binodoxys acalephae (Marshall), B. angelicae (Haliday). The most widespread species were L. fabarum and L. confusus. The rate of aphids colony infestation according to weather conditions and association with host plants are discussed. An illustrated key to the found species is given.