Euscelidius mundus

6. Euscelidius mundus (Haupt, 1927) Figs 27–28. MATERIAL. The Lower Volga Region, Saratov Oblast, Krasnokutskiy District, environs of Dyakovka village, 15.VII.2004, signals of three males recorded at 30–31 °C. SIGNALS. The male calling signal is a succession of short syllables following each other with a period of about 450–850 ms (Figs 27–28). The male can sing continuously for several tens of seconds.