Cicadetta hannekeae Gogala et al. 2008
Cicadetta hannekeae calling song, Panourgia, Greece
Cicadetta hannekeae same recording but frequency reduced to 63%
References:
Gogala M., Drosopoulos S., Trilar T., 2008. Cicadetta montana complex (Hemiptera, Cicadidae) in Greece – a new species and new records based on bioacoustics. Deutsche entomologische Zeitschrift, 55 (1): 91-100. PDF