2. Allygidius atomarius (Fabricius, 1794) .

Figs 5–7.

MATERIAL. The Lower Volga Region, Saratov Oblast, Krasnokutskiy District, environs of Dyakovka village, 16.VII.2004, signals of one male recorded at 29–30 °C .

SIGNALS. The male calling signal is a short phrase lasting for 0.6– 1.3 s (Fig. 5). It consists of uniform syllables including two or three pulses each; in some syllables, only one high-amplitude pulse is distinguishable (Figs 6–7). Syllable repetition period in a phrase averages 60–70 ms.