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 Author Ivković, Slobodan Author Iorgu, Ștefan Author Horvat, Laslo Author Chobanov, Dragan Author Korsunovskaya, Olga Author Heller, Klaus-Gerhard text Zootaxa 2017 4263 3 527 542 journal article 33072 10.11646/zootaxa.4263.3.5 594bb190-aacd-4326-b9ad-01a5c3123366 1175-5326 573657 FF8FC6FD-0BE0-43EB-A5C4-881A4C70D792 Montana striata (Thunberg, 1815) Fig. 7 B. Localities : Romania , Botoșani , Hilișeu-Horia , N 48°00.60' , E 26°17.40' , 210 m a.s.l. , 25.vi.2012 , leg. I. Ș. Iorgu (Iorgu et al. 2013) . Russia , Kursk (Centralno-Chernozemny Reserve), vii.2014 and 2015, leg. A. Benediktov , A. Mikhailenko ( 3 males ) . The calling song of this species is quite complicated. Two different echemes are combined to a phrase and this phrase is repeated in a fast sequence at least for a few minutes (longest uninterrupted recording 2 min). One echeme consists of three short syllables with high amplitude (syllable repetition rate ca. 60–70 Hz at 24–25°C), the other of five longer ones (syllable repetition rate ca. 20–30 Hz at 24–25°C; Fig. 7 B) with lower amplitude. When an animal starts to sing, it often produces only the high-amplitude echemes, separated by longer intervals, and then added the low amplitude echemes. In a recording lasting 15 minutes the animal omitted the low-amplitude echemes several times and used only the loud ones with the corresponding silent intervals.