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<p><strong>STABLE AND VARIABLE PARAMETERS IN COURTSHIP SONGS OF GRASSHOPPERS OF SUBFAMILY GOMPHOCERINAE (ORTHOPTERA, ACRIDIDAE)
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V. Yu. Vedenina, L. S. Shestakov<br>
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<small> Institute for Information Transmission Problems, Russian Academy of Sciences, Bolshoy Karetny per. 19, 127994 Moscow, Russia.
E-mail: vedenin@iitp.ru<br>


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Abstract <br>
Courtship behaviour in seven grasshopper species of subfamily Gomphocerinae (Orthoptera: Acrididae) was described from different localities of Russia, Ukraine and Greece. Not only sound but also underlying stridulatory movements of the hind legs and visual display accompanying courtship song were analyzed. Comparison of degree of variability in different courtship parameters showed that the most stable parameters appeared to be the syllable and pulse period. We discussed a potential role of stable and variable traits in the grasshopper courtship songs.  </p>
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