Abstract
Male courtship songs of 9 grasshopper species of Gomphocerinae from Kazakhstan and Orenburg region and Altai Republic of Russia were studied. We analyzed not only the sound, but also the stridulatory movements of the hind legs to more entirely describe the songs. We also analyze the frequency spectra of the songs and the whole visual display during courtship. The courtship songs of three species, Stenobothrus miramae, Chorthippus dubius and Ch. angulatus, were studied for the first time. In four species, Omocestus haemorrhoidalis, O. petraeus, Myrmeleotettix pallidus, Ch.karelini, we found certain differences in temporal pattern of the courtship songs in comparison with the previous data on the respective species from other regions. In five species, O. viridulus, S. miramae, M. pallidus, Ch. dubius and Ch. karelini, various parts of elaborate courtship songs differed in the carrier frequency. In four species, O. haemorrhoidalis, O. petraeus, M. pallidus and Ch. dubius, the dominant frequencies of the courtship song were shown to lie in the range higher than 20 kHz. The conspicuous movements of antennae and legs during courtship were studied in M. pallidus, S. miramae and Gomphocerus sibiricus.
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