Anthophilous beetles (Insecta: Coleoptera) of dandelion cenopopulations (Taraxacum offi cinale) during its 'spring' fl owering period in the Yaroslavl Region

The beetle community (Coleoptera) on the fl owers of the dandelion Taraxacum offi cinale (Yaroslavl Region, Borok vill.) during its “spring” fl owering (05/17/2022 – 06/14/2022) is represented by 28 species from 13 families. The community has a pronounced anthophilic aspect and includes mainly pollinophages and nectarophages (Elateridae, Nitidulidae, Byturidae, Phalacridae, and Oedemeridae). Two species of beetles, Olibrusbicolor and Glocianus punctiger, develop on the dandelion. During the peak of the “spring” fl owering of the dandelion, the community of fl ower – visiting beetles ) is polydominantic, and included species that feed on dandelions after wintering (Kateretidae, Nitidulidae, some Chrysomelidae, etc.). At the end of the fl owering of Taraxacum offi cinale, the species diversity of adult beetles decreases and is almost completely (by number) replaced by the specimens of summer species Byturus ochraceus, which becomes superdominant (76.74–99.77%).