Montana eversmanni (Kittary, 1849)

Ivković, Slobodan, Iorgu, Ștefan, Horvat, Laslo, Chobanov, Dragan, Korsunovskaya, Olga & Heller, Klaus-Gerhard, 2017, New data on the bush-cricket Montana medvedevi (Orthoptera: Tettigoniidae), critically endangered in Europe (EU 28), and a comparison of its song with all known song patterns within the genus, Zootaxa 4263 (3), pp. 527-542 : 538

Montana eversmanni (Kittary, 1849) —songtype II—Fig. 7H.

Locality : Kazakhstan, SW Zharly, steppe habitat, 195 m a.s.l., N 48°29', E 55°30', 16.vi.2016, imago and nymphs LI, leg. D. Chobanov.

In an animal recorded at night, the calling song consisted of a sequence of echemes each containing 5–7 syllables (syllable repetition rate 40 Hz), produced in short series or without interruption for at least 45 s. The echemes were separated by short intervals of about 150–200 ms ( Fig. 7 H) and repeated at a rate 3 Hz ( Table 1). The calling songs of both songtypes of M. eversmanni (see above) are so different that either two species may be involved or it is another case of a song dimorphism as in M. decticiformis (see above and Discussion).

Figures

FIGURE 7. Oscillograms of calling songs of Montana species. A— medvedevi, B— striata (left Romania, right Russia), C 1 — decticiformis (Shatpe 27 ° C + sun), C 2 — decticiformis (Zharmysh 20 ° C), D— taurica, E 1 — montana (Austria), E 2 — montana (Ukraine, 25 ° C), F— daghestanica, G— armeniaca, H— eversmanni (see text), I— tianshanica, J 1 — tomini (25 ° C), J 2 — tomini (16 ° C), K— helleri. See Table 2 and text for details.