Ermakova Yu.V. 2017. [Orthopteran communities in the relic steppe of Central Yakutia, Russia] // Euroasian Entomological Journal. Vol.16. No.6: 536–543 [in Russian, with English summary].
Institute for Biological Problems of Cryolithozone SB RAS, Lenin Avenue 41, Yakutsk 677980 Russia.
ABSTRACT. Orthopteran communities associated with relic steppe slopes in the river valleys of the Middle Lena and the Amga (Central Yakutia) are described for the first time; of the 14 species found (2 Tettigoniidae spp., 1 Tetrigidae sp. & 11 Acrididae spp.). In comparison with those of the meadow, steppe communities are characterized by a low level of diversity and abundance. The north-steppe eastern Palearctic species Celes skalozubovi has been found only in relict steppes on mountain slopes. The basis of the steppe communities is formed by eight of the most xerophilous species. By structure and species composition of dominants, all investigated communities are divided into two main types: I – steppe communities with a predominance of Glypthobotrus maritimus jacutus; II – steppe communities dominated by various xerophilous species: Omocestus haemorrhoidalis, Gomphocerus sibiricus, Bryodemella tuberculata, Montana montana and Aeropedellus variegatus.
KEY WORDS: Orthoptera, steppe communities, abundance, Central Yakutia, plant formation, confinement, classification.