A preliminary inventory of weevil AssemBlages (Coleoptera, Curculionoidea) in Kharkiv metropolitan area (Ukraine) using pitfall traps
Species composition, the ecological structure and the occurrence characteristics of weevils (Curculionoidea) in the stratobios of the main urban habitats of Kharkiv were studied. 59 species from 41 genera and three families were registered. Curculionoidea comprises 31.5% of the coleopterofauna of stratobios. Approximately 10 species are attributed to dominants (2–3 species are eudominants). 40 species are ranked as random and 9 species are rare. 4 species of Curculionoidea (Cyanapion columbinum, Curculio rubidus, Otiorhynchus albidus, Tropiphorus micans) are recorded for the first time in the Left bank forest-steppe zone of Ukraine. The values of the main indices of species diversity were low, which may indicate a significant oligodominance of Curculionoidea in all urban habitats. Most of species are herba- and dendrobionts (14–17), but almost all of them are registered as random (27) or rare (4) elements. 26 species associated with stratobios (among which most dominants elements are recorded). Species associated with meadows (21) and forests, or eurytopic species (14) are dominants in the samples; by trophic links – oligo- (32) and polyphagous species (24 ) were prevailed. 45 species prefer mesophilic habitats. The number of eurytopic mesophilous polyphagous stratogeobionts were maximal. The largest number of species (25–33) were documented in vegetation of the outskirts and household plots of city compared to the city parks and plantings of the center (18–19), but minimumly (12) in forest. The spectrum of ecological groups was also minimal in a forest, but the maximum is in the plantings of periphery and household plots of the city. Faunistic similarity was slightly more than 0.20, which may indicate specific and significant differences in the species composition of weevils in different urban habitats of Kharkiv.
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