Recently, the authors discovered the eastern Siberian spp., Coenagrion hylas (Trybom), Somatochlora graeseri Sel. and Leucorrhinia orientalis Sel. in the N of the U rals, i.e. almost 1500 km W of their range boundary as proposed earlier. This phenomenon can be explained by the ease with which dragonflies disperse on the forest-tundra open space, rich in surface waters.


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Societas Internationalis Odonatologica

B.F. Belyshev, & A.Yu. Haritonov. (1980). On the reasons for a sharp curve in the western boundary of the ranges of some eastern dragonfly species in the north of western Siberia. Odonatologica, 9(4), 317–319.