New data on acoustic communication and ecology of grasshoppers of the genera Eremippus and Dociostaurus (Orthoptera, Acrididae) and notes on the use of bioacoustic data in supraspecific taxonomy of the subfamily Gomphocerinae

Abstract

The calling songs of Dociostaurus hauensteini, Eremippus simplex, E. miramae, and E. sobolevi are described for the first time. The species composition and ecology of grasshoppers of the genus Eremippus from the Lower Volga basin were studied. Reproductive isolation between Eremippus species in this region was shown to be determined principally by the differences in the acoustic behavior. The calling songs were compared in five Eremippus species, and divided into three groups according to their amplitude-temporal patterns. The importance of bioacoustic data for supraspecific taxonomy of the subfamily Gomphocerinae is discussed.