Relict elements fauna of the phytophagous beetles (Coleoptera: Chrysomelidae, Curculionoidea) of the east of the Russian plain and their natural refuges

For the first time in the East of the Russian plain differential analysis of relict elements of the fauna of phytophagous beetles from superfamilies Chrysomeloidea and Curculionoidea (223 species; about 18% of the fauna) was conducted. Relict elements depending on the origin of the three complexes are separated: North Asian (45 species), Ancient Mediterranean (74 species) and Western Palearctic (104 species). In each of these identified several landscape-historical groups. The most ancient and true relict in the territory are species of Siberian origin (Eastern steppen, tundrasteppen, some arctic-boreal, as well as paleoendemics). The largest concentration of relicts is observed in the stony-steppe communities on the remnant forms of relief within the uplands of the south of the forest-steppe zone. The most important feature of these complexes - syntopy Siberial-Mongolial, Kazakhstanian, Turanian and Pannonian-Pontian species. In the northern part of the boreal ecotone high saturation relict forms noted in Kungurskaya insular forest-steppe.