Abstract
Field light-trapping on the territory of the national park “The Curonian Spit” (samples at the territory of the field ornithological station “Fringilla”) in 2018 provided rich material of the beetles. Totally 10719 specimens of Coleoptera identified as belonging to 173 species from 118 genera and 30 families were caught in an ecotone zone between the white dune complex and the middle-aged pine forest. Among them, seven species, Hygrotus polonicus (Aubé, 1842), Berosus spinosus (Steven, 1808), Bledius tricornis (Herbst, 1784), Platystethus arenarius (Geoffroy, 1785), Atheta boletophila (Thomson, 1856), Euplectus piceus Motschulsky, 1835 and Telmatophilus schoenherrii (Gyllenhal, 1808), are recorded for the Kaliningrad Region for the first time. The different indexes of biodiversity were calculated. The comparison with the analogical by methods and locality results of 2011 year are presented. The materials on pine chafer (Polyphylla fullo) were specially analyzed. The number of males collected through light trap is much more than the number of females. The males show different frequency of two color forms with the sharp and stable dominance of dark coloration under bright coloration (the ratio is 2:1). The color forms in females are represented by equal ratio.
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